09/23/2021

Publications

Rosales, C., R. Ehrhardt, A. Mantey, B. Makela, T. Byrem, A. Veiga-Lopez. 2020. Preconceptional diet manipulation can influence placenta endocrine function in sheep.  Domestic Animal Endocrinology 74: 1-13.

 

Posbergh, C.J. and Huson, H.J. (2021), All sheeps and sizes: a genetic investigation of mature body size across sheep breeds reveals a polygenic nature. Anim. Genet., 52: 99-107. https://doi.org/10.1111/age.13016

 

Salavati M, Caulton A, Clark R, Gazova I, Smith TPL. Worley KC, Cockett NE, Archablad AL, Clarke SM, Murdoch BM, Clark EL. on behalf of the Ovine FAANG Project Consortium. Global analysis of transcription start sites in the new ovine reference genome (Oar rambouillet v1.0). Frontiers in Genetics (2020).

 

Henslee D, Murdoch B, Yelich, Taylor BJ and Ellison M. Comparative genomics of sheep Tas2r repertoire in cattle, goat, human, dog and mice.  Animal Gene (2020) Oct 22.

 

Davenport KM, Hiemke C, McKay SD, Thorne JW, Lewis RM, Taylor T, Murdoch BM. Genetic structure and admixture from terminal breeds in the United States. Animal Genetics (2020) Jan 23.

 

Becker GM, Job RJ, Davenport KM, Burke JM, Lewis RM, Miller JE, Morgan JL, Notter DR, and Murdoch BM. Genome-wide association study to identify loci associated with gastrointestinal nematode resistance in Katahdin. Animal Genetics (2020) Jan 3.

 

Stewart, W. C., J. D. Scasta, J. B. Taylor, T. W. Murphy, and A. A. M. Julian. 2021. Invited review: Sheep mineral nutrition considerations for extensive production systems. App.                Anim. Sci. 37:256-272. doi:10.15232/aas.2021-02143

 

Knuth, R. M., W. C. Stewart, J. B. Taylor, B. Bisha, C. J. Yeoman, M. L. Van Emon, and T. W. Murphy. 2021. Relationships among intramammary health, udder and teat characteristics, and productivity of extensively managed ewes. J. Anim. Sci. (in press). doi:10.1093/jas/skab059

 

Stewart, W. C., D. M. Scott, S. B. Howell, R. M. Kaplan, B. L. Roeder, and T. W. Murphy. 2021. Anthelmintic resistance in gastrointestinal nematodes and associated management factors in Intermountain West sheep flocks. Sheep & Goat Res. J. (in press).

 

Stewart, W. C., T. W. Murphy, C. M. Page, D. C. Rule, J. B. Taylor. K. Austin, and C. Pankey. 2020. Effect of increasing dietary zinc sulfate fed to primiparous ewes: I Effects on serum metabolites, mineral transfer efficiency, and animal performance. Appl. Anim. Sci. 36:839-850. doi:10.15232/aas.2020-02057.

 

2020. McGregor, J. G. P. Bowman, C. M. Page, A. R. Hubbard, M. Manoukian, W. C. Stewart, and M. L. Van Emon. 2020. The effect of ensiling sugar beets on preservation characteristics, nutrient profile, and in situ disappearance. J. Agric. Studies. https://doi.org/10.5296/jas.v8i4.17165

 

2020. D. Scasta, T. Jorns, J. D. Derner, B. Stam, M. McClaren, Craig Calkins, W. C. Stewart. 2020. Technical Note: Toxic plants in sheep diets grazing extensive landscapes: Insights from Fecal DNA metabarcoding. Livestock Sci.

 

Acharya, M., Burke, J.M., Miller, J.E., Terrill, T.H., Wood, E.L., Muir, J.P., 2020.  Quebracho tannins aid in the control of Eimeria spp. in lambs and goat kids. Vet. Parasitol. 288, 1-8 (accepted October 23, 2020, published Dec 2020).

 

Chai, J., Alrashedi, S., Coffey, K., Burke, J., Feye, K., Ricke, S.C., Park, S.H., Edwards, J.L., Zhao, J., 2020. Endophyte-infected tall fescue affects rumen microbiome in grazing ewes at gestation and lactation. Front. Vet. Sci. 7, 1-13, Article 544707 (accepted 9/9/20, published 10/14/20).

 

Acharya, M., Burke, J.M., Ashworth, A.J., Rorie, R.W., 2020. Relationship of anti-Mullerian hormone to reproductive traits in Katahdin ewes bred in late spring or fall. Adv. Repro. Sci. 8, 48-56.

 

Burke, J.M., Miller, J.E. 2020. Sustainable approaches to parasite control in ruminant livestock. Vet. Clin. Food Anim. 36, 89-107.

 

Acharya, M., Burke, J.M., Rorie, R., 2020. Semen extension in Katahdin rams. Adv. Reprod. Sci. 8, 14-30.

 

Becker, G.M., Davenport, K.M., Burke, J.M., Lewis, R.M., Miller, J.E., Morgan, J.L., Notter, D.L., Murdoch, B.M., 2020. Genome-wide association study to identify genetic loci associated with gastrointestinal nematode resistance in Katahdin sheep. Anim. Gen. 51, 330-335. doi: 10.1111/age.12895.

 

Freking, B. A. and T. W. Murphy. 2020. Comparison of performance of F1 Romanov crossbred ewes with wool and hair breeds during spring lambing under intensive and extensive production systems. J. Anim. Sci. doi:10.1093/jas/skaa397.

 

Li, H., X. Wu, R. G. Tait Jr., S. Bauck, D. L. Thomas, T. W. Murphy, and G. J. M. Rosa. 2020. Genome-wide association study of milk production traits in a crossbred dairy sheep population using three statistical models. Anim. Genet. 51:624-628. doi:10.1111/age.12956.

 

Murphy, T. W., and B. A. Freking. 2020. Comparison of performance of F1 Romanov crossbred ewes with wool and hair breeds during fall lambing and body weight and longevity            through 6 production years. J. Anim. Sci. doi:10.1093/jas/skaa400.

 

Murphy, T. W., J. W. Keele, and B. A. Freking. 2020. Genetic and non-genetic factors influencing ewe prolificacy and lamb body weight in a closed Romanov flock. J. Anim. Sci. doi:10.1093/jas/skaa283.

 

Lonngren, K., Barone, C., Zajac, A., Brown, R., Reed, J, Krueger, C., Petersson, K. (2020) Effect of birdsfoot trefoil cultivars on exsheathment of Haemonchus contortus in fistulated sheep. Veterinary Parasitology 287:109271

Sanders, J., Xie, Y., Gazzola, D., Li, H., Abraham, A., Flanagan, K., Rus, F., Miller, M., Huc, Y., Guynn, S., Draper, A., Vakalapudi, S., Petersson, K., Zarlenga, D., Li, R., Urban Jr., J., Ostroff, G., Zajac, A., Aroian, R. (2020). A New Paraprobiotic-based Treatment for Control of Haemonchus contortus in Sheep. International Journal of Parasitology: Drugs and Drug Resistance 14:230-236.

 

Extension publications

 

Recktenwald, E.B and R. A. Ehrhardt.  2020. Methodology for evaluating the environmental footprint of four types of U.S. sheep operations.   Presented to the American Lamb Board.  November 2020.

 

Recktenwald, E.B and Ehrhardt, R.A. 2020.  Benefits and considerations in using terminal sires. Michigan Shepherd News

 

Ehrhardt, R.A. and B. Makela. 2020. “How to administer dewormer orally to sheep and goats.” Instructional video for MSU ANS 262 introductory sheep management and MSU Small ruminant extension parasite management program.

 

Ehrhardt, R.A. and B. Makela. 2020. “How to perform a quantitative fecal egg count.” Instructional video for MSU ANS 262 introductory sheep management and MSU Small ruminant extension parasite management program.

 

Ehrhardt, R.A. and B. Makela. 2020. “How to screen sheep and goats for parasite infection using the FAMACHA system.” Instructional video for MSU ANS 262 introductory sheep management and MSU Small ruminant extension parasite management program.

 

2020. O’Brien and S. Wildeus. 2020. Enhancing Reproductive Performance in Small Ruminants: Part II. Puberty and Estrous Cycles. http://digitalpubs.ext.vt.edu/vcedigitalpubs/9333817745874164/MobilePagedReplica.action?pm=2&folio=1#pg1

 

Ehrhardt, R.A.  “Application of ultrasound technology in the management of reproduction in small ruminants.” Webinar prepared for American Association of Small Ruminant Practitioners Webinar Series.  June 16, 2021.

 

Ehrhardt, R.A. “Nutritional management of ewes in late pregnancy to prevent metabolic disease.”  Webinar prepared for Centre d’expertise en production ovine du Québec (CEPOQ).  April 29, 2021.

 

Ehrhardt, R.A. and Thorne, J “Winter Ewe Nutrition Podcast”.  American Sheep Industry Podcast series.  Feb. 16, 2021. 

 

Ehrhardt, R.A. “Managing coccidiosis.” Webinar prepared for the Ontario Master Shepherd course.  Jan. 21, 2021.

 

Ehrhardt, R.A.  “Ovine Progressive Pneumonia Eradication in 2020: What has worked and has it been worth it?  Michigan Shepherds Weekend. January 10, 2021.

 

Ehrhardt, R.A. and K. Cassida.   “Cover crop grazing with sheep in Michigan: Results of a 2-year study.  Part 1: Cover crop choices and management options.” Michigan Shepherds Weekend. January 10, 2021.

 

2021. Macaluso, K. Cassida and R. A. Ehrhardt, “Cover crop grazing with sheep production in Michigan. Part 2: Lamb performance and carcass quality on cover crop grazing systems.” Michigan Shepherds Weekend. January 10, 2021.

 

E.B. Recktenwald and R.A. Ehrhardt “Evaluating the environmental footprint of US lamb production: Why it matters and opportunities for improvement.” Michigan Shepherds Weekend. January 10, 2021.

 

Ehrhardt, R.A. “Grazing cover crops.”  Cover Crop Strategies Magazine Podcast.  December 2020.

 

Ehrhardt, R.A.  “Strategic nutritional management to optimize reproductive success in sheep.   Sheep and Goat Webinar Series from the University of Idaho and the University of Wyoming.  September 24, 2020.

 

Ehrhardt, R.A. “Grazing annuals as part of a crop/pasture rotation or as cover crops with sheep.”  Missouri sheep and goat conference.   Sept. 18, 2020.

 

Ehrhardt, R.A.  “Optimizing forage and grazing management for small ruminant health and productivity.  American Association of Small Ruminant Practitioners (AASRP) Webinar series.  Sept. 9, 2020.

 

Recktenwald, E. and R. Ehrhardt “Evaluating the environmental footprint of the US sheep industry.”  Presentation to the American Lamb Board Summer Meeting.  July 20, 2020.

 

Ehrhardt, R.A.   “Lamb production: providing a year-round supply of lamb with accelerated lambing.”  University of Georgia Extension Small Ruminant Webinar, June 9, 2020.

 

Ehrhardt, R.A. “Strategies to manage forage quality limitation when feeding sheep and goats.” 2020 Purdue University and University of Kentucky sheep and goat education series. Jan 2020. https://ag.purdue.edu/ansc/sheep-site/Pages/SheepVidArchives.aspx   https://www.youtube.com/watch?v=TD4Mzn_q-Iw

 

08/22/2022

Peer-reviewed publications & meeting abstracts

Acharya, R.S., Burke, J.M., Leslie, T., Loftin, K., Joshi, N., 2022. Wild bees respond differently to sampling traps with vanes of different colors and light reflectivity in a livestock pasture ecosystem. Sci. Rep. (Nature). (In Press)

Acharya, M., Burke, J.M., Wood, E., Huang, Y., Morse, P.D., Coffey, K., Edwards, J.L., Rosenkrans, C., 2021. Changes in cytochrome P450 in Katahdin ewes fed endophyte-infected tall fescue seed diets in spring and fall. J. Anim. Sci. 99 (Suppl. 2), 40-41 (Abstr.).

Acharya, R.S., Leslie, T., Fitting, E., Burke, J.M., Loftin, K., Joshi, N., 2021. Color of trap influences sampling of bees and other insects in livestock pasture ecosystem. Biology 10, 445. https://doi.org/10.3390/ biology10050445.

Acharya-Sharma, R., Burke, J., Leslie, T.W., Loftin, K., Joshi, N., 2021. Wild bees respond differently to passive sampling traps with vanes of different colors and light reflectivity in a livestock pasture ecosystem. Entomol. Soc. Amer.

Arisman, B.C., Burke, J.M., Morgan, J.L.M., Lewis, R.M., 2022. Quantification of environmental management systems for U.S. Katahdin sheep producers. World Cong. Genet. Appl. Livest. Prod., Rotterdam, The Netherlands, July 2022.

Becker, G.M., Burke, J.M., Lewis, R.M., Miller, J.E., Morgan, J.L.M., Notter, D.R., Murdoch, B.M., 2021. DEL-1 gene is associated with increased weaning fecal egg counts in Katahdin sheep. Int. Soc. Anim. Gen. (ISAG) Conf., July 2021.

Becker, G.M., Burke, J.M., Lewis, R.M., Miller, J.E., Morgan, J.L.M., Rosen, B.D., Van Tassell, C.P., Notter, D.R., Murdoch, B.M., 2022. Variants within genes EDIL3 and ADGRB3 are associated with divergent fecal egg counts in Katahdin sheep at weaning. Front. Genet. 13, Art. 817319; doi: 10.3389/fgene.2022.817319.

Becker, G.M., Burke, J.M., Lewis, R.M., Miller, J.E., Morgan, J.L.M., Rosen, B.D., Van Tassell, C.P., Notter, D.R., Murdoch, B.M., 2022. Genome-wide association study identifies genetic variants within gene edil3 associated with increased weaning fecal egg counts in Katahdin sheep. Plant and Animal Genome XXIX Conference (January 8-12, 2022), San Diego, CA.

Brown, K., S. Wildeus, D. O’Brien. 2022. Effect of cooling rate on sperm motion characteristics of ram semen during liquid storage at two temperatures. Proc. ARD Research Symposium 2022, Atlanta, GA, April 2-5, p. 232

Burke, J.M., Wood, E.L., Miller, J.E., 2021. Season of lambing influences dynamics of gastrointestinal nematode infection of lambs in Arkansas, USA. WAAVP Conference, Dublin, Ireland, July 2021.

Burke, J.M., Wood, E.L., Miller, J.E., 2021. Influence of season of lambing on gastrointestinal nematode (GIN) infection of lambs. J. Anim. Sci. 99 (Suppl. 2), 39 (Abstr.).

Burke, J.M., Miller, J.E., 2021. Multi-species grazing for control of gastrointestinal nematodes – A review. J. Anim. Sci. 99 (Suppl. 2), 36-37 (Abstr.).

Callendar, M., S. Wildeus, D. O’Brien. 2022. Growth, libido and ejaculate characteristics in post-pubertal hair sheep rams rendered short-scrotum at birth and weaning. Proc. ARD Research Symposium 2022, Atlanta, GA, April 2-5, p. 232

Freking, B. A. and T. W. Murphy. 2021. Comparison of performance of F1 Romanov crossbred ewes with wool and hair breeds during spring lambing under intensive and extensive production systems. J. Anim. Sci. doi:10.1093/jas/skaa397.

Griffin, C., S. Wildeus, D. O’Brien. 2022. Retention of ram sperm motility during liquid storage in different types of shipping containers.  Proc. ARD Research Symposium 2022, Atlanta, GA, April 2-5, p. 66

Knuth, R. M., W. C. Stewart, J. B. Taylor, B. Bisha, C. J. Yeoman, M. L. Van Emon, and T. W. Murphy. 2021. Relationships among intramammary health, udder and teat characteristics, and productivity of extensively ewes. J. Anim. Sci. doi:10.1093/jas/skab059

Kochendoerfer N.*, Shepherd. S.J., Posbergh C.J., Huson H.J., Barbano D.M., Thonney, M.L. 2022. Genetic make-up, milk production, and infrared predicted milk constituents in a commercial dairy sheep flock of variable breed composition. Sheep & Goat Research Journal

Maierle, C.L., A.R. Weaver, E.E. Felton, S.P. Greiner, S.A. Bowdridge. 2021. Impact of H. contortus on feed intake in Katahdin sheep selected for parasite resistance.

McCoski, S., A. Bradbery, R. d. S. Marques, C. Posbergh, and C. Sanford. 2021. Maternal Nutrition and Developmental Programming of Male Progeny. Animals 11(8):2216.

McMillan, A.J., Brown, D.J., Burke, J.M., Morgan, J.L., Lewis, R.M., 2022. Cross-validation of single-step genetic evaluation in U.S. Katahdin sheep. World Cong. Genet. Appl. Livest. Prod., Rotterdam, The Netherlands, July 2022.

Miller, J.E., Burke, J.M., Terrill, T.H., 2021. BioWorma as an aid for controlling ruminant nematode parasites. J. Anim. Sci. 99 (Suppl. 2), 36 (Abstr.).

Murphy, T. W., C. G. Chitko-McKown, M. P. Heaton, and B. A. Freking. 2021. Effect of TMEM154 E35K variant (haplotypes 1 and 3) on the incidence of ovine lentivirus infection and ewe productivity during lifetime exposure. J. Anim. Sci. (in press). doi:10.1093/jas/skab304

Murphy, T. W. and B. A. Freking. 2021. Comparison of performance of F1 Romanov crossbred ewes with wool and hair breeds during fall lambing and body weight and longevity through 6 production years. J. Anim. Sci. doi:10.1093/jas/skaa400.

Murphy, T. W. 2022. Genetic approaches to improve reproductive performance in the U.S. sheep industry. Am. Soc. Anim. Sci. Ann. Meeting.

Murphy, T. W. and S. Wildeus. 2021. Breed and mating season effects on gestation length in landrace hair sheep ewes. Southern Sec. Am. Soc. Anim. Sci. Ann. Meeting.

Murphy, T. W. and J. B. Taylor. 2021. The relationship between milk score near parturition and udder score near weaning and their effects on Polypay, Rambouillet, and Targhee ewe productivity. Trans. Anim. Sci. (in press).

Murphy, T. and S. Wildeus. 2022.  Breed and mating season effects on gestation length in landrace hair sheep ewes. J. Anim. Sci Vol. 100:43, Suppl. S1

Notter, D.R., Heidaritabar, M., Burke, J.M., Shirali, M., Murdoch, B.M., Morgan, J.L.M., Morota, G., Sonstegard, T.S., Becker, G.M., Spangler, G.L., MacNeil, M.D., Miller, J.E., 2022. Single nucleotide polymorphism effects on lamb fecal egg count estimated breeding values in progeny-tested Katahdin sires. Front. Genet. doi: 10.3389/fgene.2022.866176.

O’Brien, D. and S. Wildeus. 2021. Influence of Season of Birth, Breed and Reproductive Status on Carcass Traits of Male Hair Sheep Lambs. J. Anim. Sci Vol. 99:38, Suppl. S2

O’Brien, D., S. Wildeus and W. Brousseau. 2022.Producer certification in mobile processing: Mitigating lack of access to sheep and goat processing in Virginia. J. Anim. Sci Vol. 100: 3, Suppl. S1

O’Brien, D. and S. Wildeus. 2022. Growth and carcass traits of short scrotum and castrated hair sheep lambs on pasture during different seasons. Proc. ARD Research Symposium 2022, Atlanta, GA, April 2-5, p. 322

Page, C. M., R. M. Knuth, T. W. Murphy, D. C. Rule, B. Bisha, J. B. Taylor, and W. C. Stewart. Effect of   increasing dietary zinc sulfate fed to gestating ewes: II Milk somatic cell count, microbial populations, and fatty acid composition. Submitted to Applied Animal Science (in press).

Patton, C., S. P. Greiner, S.A. Bowdridge. 2021. Determination of circulating interleukin-13 in sheep after infection with Haemonchus contortus.

Smith, D., Michael Thonney, Katherine Petersson, Maria L Hoffman., 2021. PSIV-11 Effects of feeding a 50% cranberry vine pellet on milk components during lactation in sheep. J. Anim. Sci. 99 (Suppl. 3), 300 (Abstr.)

Smith, D., K.L. Bentley, S.A. Bowdridge. 2021. Selection for low fecal egg count estimated breeding value correlates with greater circulating antibody in sheep

Robertson, M., S. Wildeus, D. O’Brien. 2022.  Effect of semen dose on pregnancy rate using liquid semen AI in hair sheep. Proc. ARD Research Symposium 2022, Atlanta, GA, April 2-5, p. 65

Rohrbaugh, R.T., S.P. Greiner, S.A. Bowdridge. 2021. Anthelmintic resistance in Angus bulls participating in regional performance tests.

Snider, A. P., B. A. Freking, J. R. Miles, L. A. Rempel, M. S. Crouse, R. A. Cushman, S. Wildeus, and T. W. Murphy. 2022. Sperm characteristics of maternal composite rams before and after the breeding  season. Soc. St. Rep. Ann. Meeting.

Terrill, T.H., Whitley, N.C., Burke, J.M., Miller, J.E., 2021. Use of sericea lespedeza (Lespedeza cuneata) as a nutraceutical forage for livestock. J. Anim. Sci. 99 (Suppl. 2), 34-35 (Abstr.).

Thorne, J.W., Bowdridge, B.A., Murdoch, B.M., R.R. Redden. Response of Rambouillet Lambs to an Artificial Gastrointestinal Nematode Infection. Animals 2022, 12(9). Doi:10.3390/ani12091199

Thorne, J.W. R.R. Redden, S.A. Bowdridge, G.M. Becker, M.R. Stegemiller, B.M. Murdoch. 2022. Genome-wide analysis of sheep artificially or naturally infected with gastrointestinal nematodes. Annual Meeting of American Society of Animal Science and Canadian Society of Animal Science. Oklahoma City, OK, June 26^th-29^th, 2022.

Weaver, A.R., J.J. Garza, S.P. Greiner, S.A. Bowdridge. 2021. Immune mechanisms of Texel sheep to adult and egg stages of Haemonchus contortus. Parasit. Immunol. 

Whitley, N.C., Burke, J.M., Smith, E., Lyte, K., Terrill, T.H., 2022. Determining the efficacy of Red Cell® in combination with anthelmintic drugs against indicators of gastrointestinal nematode parasitism in sheep and goats. Small Rum. Res. 209, Article 106656. 

Whitley, N.C., Dykes, G., Vazquez, J., Burke, J.M., Terrill, T.H., 2021. Effect of copper oxide wire particles with and without anthelmintic treatment or anthelmintic treatment alone on gastrointestinal nematode (GIN) fecal egg counts in goats. J. Anim. Sci. 99 (Suppl. 2), 43 (Abstr.).

Wildeus, S., D. O’Brien, G. J. Pent, and K. M. Payne. 2021. Growth performance of short scrotum and castrated hair sheep lambs on pasture during different seasons. J. Anim. Sci Vol. 99:40, Suppl. S2

Wildeus, S., T. Murphy, and D. O’Brien. 2021. Evaluation of Barbados Blackbelly and St. Croix hair sheep under accelerated lambing using purebred and terminal sire mating: Ewe fertility, prolificacy, and productivity.  J. Anim. Sci Vol. 99: 487–488, Suppl. S3

Wildeus, S, T. Murphy, and D. O’Brien. 2021. Evaluation of Barbados Blackbelly and St. Croix hair sheep under accelerated lambing using purebred and terminal sire mating: Lamb survival and body weight.  J. Anim. Sci Vol. 99: 488–489, Suppl. S3

Wildeus, S., T. Murphy, J. Lee, C. Teutsch, and D. O’Brien. 2022. Pasture-based production of landrace hair sheep under accelerated mating: Use of a terminal sire. Proc. ARD Research Symposium 2022, Atlanta, GA, April 2-5, p. 320

 

Extension publications

Ehrhardt, R.A.  2022. Essential supplies for lambing season.  Michigan Shepherds News.

Ehrhardt, R.A.  2021. A basic biosecurity quarantine protocol for new flock additions. Michigan Shepherd News

Ehrhardt, R.A. 2021. Preventing White Muscle Disease in Sheep with Selenium and Vitamin E Supplementation. Michigan Shepherd News.

Ehrhardt, R.A.  2021.  Controlling coccidiosis in your flock.   Michigan Shepherd News

Ehrhardt, R.A. 2021. Is pasture lambing a good option for your farm?  Michigan Shepherd News.

Ehrhardt, R.A.  2021.  Braising is a fantastic method to make delicious meals out of less expensive lamb cuts.  Michigan Shepherd News.

Ehrhardt, R.A. 2021. Processing lambs and newborn care.  Video created for MSU small ruminant birth program.

Ehrhardt, R.A. 2021. Birth signs and normal birth process.  Video created for MSU small ruminant birth program.

Ehrhardt, R.A. 2021. Colostrum management.  Video created for MSU small ruminant birth program.

Ehrhardt, R.A. 2021. Lamb mortality diagnosis.  Video created for MSU small ruminant birth program.

07/28/2023

Publications

Arisman, B.C., Burke, J.M., Morgan, J.L.M., Lewis, R.M., 2023. Clustering climate and management practices to define environmental challenges affecting gastrointestinal parasitism in Katahdin sheep. J. Anim. Sci. 101, 1-10.

Becker GM, Burke JM, Lewis RM, Miller JE, Morgan JLM, Rosen BD, Van Tassell CP, Notter DR and Murdoch BM. Variants within gene EDIL3 are associated with increased fecal egg counts in Katahdin sheep at weaning. Frontiers in Genetics (2022). DOI: 10.3389/fgene.2022.817319

Becker GM, Burke JM, Lewis RM, Miller JE, Morgan JL, Rosen BD, Van Tassell CP, Notter DR, Murdoch BM. Inbreeding and effective population size of United Stated Katahdin sheep. The 12^th World Congress on Genetics applied to Livestock Production (2022). https://www.wageningenacademic.com/pb-assets/wagen/WCGALP2022/23_004.pdf

Burke, J.M., Miller, J.E., Orlik, S.T., Garza, J.J., Acharya, M., Wood, E., Terrill, T.H., 2023. Sericea lespedeza leaf meal fed to sheep and goats reduces serum concentrations of trace minerals. Sheep Goat Res. J.

Burke, J.M., Popp, M., Anderson, J., Miller, J.E., Notter, D.R., 2022. The impact of sire fecal egg count estimated breeding values on indicators of offspring gastrointestinal nematode infection, and relative impact of lamb estimated breeding values on sale value of ram lambs. Small Rum. Res. 216; 106830. https://doi.org/10.1016/j.smallrumres.2022.106830.

Davenport KM, Bickhart DM, Worley KC, Murali SC, Cockett NE, Heaton MP, Smith TPL, Murdoch BM, Rosen BD. An improved ovine reference genome assembly to facilitate in depth functional annotation of the sheep genome. GigaScience (2022) Feb 4;11. DOI: 10.1093/gigascience/giab096.

DelCurto T., Wyffels S., Vavra M., Wisdom M., Posbergh C. 2023. Western Rangeland Livestock Production Systems and Grazing Management. In: Rangeland Wildlife Ecology and Conservation,     editor, Rangeland Wildlife Ecology and Conservation.

Ehrhardt, R.A. 2022. Critical control points of lamb survival.  Proceedings of the Michigan Veterinary Conference.  

Ehrhardt, R.A. 2022. Diagnosis and treatment of hoof disease in small ruminants. Proceedings of the Michigan Veterinary Conference. 

Ehrhardt, R.A. 2022. Prevention and treatment of common nutritional disorders in small ruminants. Proceedings of the Michigan Veterinary Conference.  

Florez, J. M., K. Martins, S. Solin, J. Bostrom, P. Rodríguez-Villamil, F. Ongaratto, S. A. Larson, U. Ganbaatar, A. W. Coutts, D. Kern, T. W. Murphy, E. Kim, D. F. Carlson, A. Huisman, T. S. Sonstegard, and C. A. Lents. CRISPR/Cas9-editing of KISS1 to generate      pigs with hypogonadotropic hypogonadism as a castration free trait and a mosaic parental line. Frontiers in Genetics 13. https://doi.org/10.3389/fgene.2022.1078991

Fraley, Hannah. “Sheep Targeted Grazing of Plains Larkspur (Delphinium geyeri) as a Cattle Toxicity Mitigation Strategy”. M.S. Thesis., University of Wyoming- Laramie, College      of Agriculture, Life Sciences and Natural Resources. April 2023

Freking, B. A., T. W. Murphy, C. G. Chitko-McKown, A. M. Workman, and M. P. Heaton. 2022. Impact of four ovine TMEM154 haplotypes on ewes during multiyear lentivirus exposure. Int. J. Mol. Sci. 23:14966. doi:10.3390/ijms232314966.

Green, C., Wilmer, H.N., Ferguson, D.B., Crimmins, M.B., Mcclaren, M.P. 2022. Using scale and human agency to frame ranchers’ discussions about socio-ecological change and   resilience. Journal of Rural Studies. 96(2022):217-226.      https://doi.org/10.1016/j.jrurstud.2022.11.001.

Maierle, C.L., A.R. Weaver, E.E. Felton, S.P. Greiner, and S.A. Bowdridge. 2022. Evaluation of terminal sire breeds for hair sheep production systems: Feedlot environment. Small Ruminant Research, 213: 106726. DOI: 10.1016/j.smallrumres.2022.106726

Makela, Barbara, Erin Recktenwald, Filipe Couto Alves, Richard Ehrhardt, Almudena Veiga-Lopez. 2022. Effect of pre-conceptional nutrition and season on fetal growth during early pregnancy in sheep. Theriogenology 190:22-31.

Notter DR, Heidaritabar M, Burke JM, Shirali M, Murdoch BM, Morgan JLM, Morota G, Sonstegard TS, Becker GM, Spangler GL, MacNeil MD, Miller JE. Single nucleotide polymorphism effects on lamb fecal egg count estimated breeding values in progeny-tested Katahdin sires. Frontiers in Genetics (2022) DOI: 10.3389/fgene.2022.866176.

Oliveira RD, Mousel MR, Gonzalez MV, Durfee CJ, Davenport KM, Murdoch BM, Taylor JB, Neibergs HL, White SN. A high density genome-wide association with absolute blood monocyte count in domestic sheep identifies novel loci. PloS One (2022). DOI.org/10.1371/journal.pone.0266748.

Posbergh, C.; Roeder, B.; Murphy, T.; Stewart, W.; Kott, R.; Hatfield, P.; Thomas, V.; Drummond, J. 2023. Ewe and lamb body condition, breeding and production data from the Montana Agricultural Experiment station, Montana State University, Bozeman, MT from 1960 - 2012. Ag Data Commons. doi:10.15482/USDA.ADC/1528462

Ritchie, Clara. “Effects of maturity, diet, breed, and sex on fatty acid profiles from ovine carcasses and the effects of delayed high-energy concentrate diets on carcass and sensory characteristics compared to conventional finishing systems in Rambouillet wethers”. M.S. Thesis., University of Wyoming- Laramie, College of Agriculture, Life Sciences            and Natural Resources. August 2022

Rosa-Velazquez, M., Y. Wang, A. Sanders, S. Pyle, L. G. Garcia, B. M. Bohrer, and A. E. Relling. 2022. Effects of maternal dietary fatty acids during mid-gestation on growth, glucose metabolism, carcass characteristics, and meat quality of lamb progeny that were fed differing levels of dry matter of intake. Meat Science 194. doi:10.1016/j.meatsci.2022.108991.

Shaub D., Maninger S., Roeder B.L., Posbergh C.J. 2023. Technical Note: The Impact of Temperature and Humidity on United States Fine-Wool Fiber Diameter Measurements. Sheep & Goat Research Journal

Smith, Delaney, Petersson, Katherine, Peterson, Maria L.  Determining the Effects of Cranberry Vine Supplementation on the Ewe and Her Offspring During Pregnancy and Lactation. Animals In Press.

Tajonar, K., M. Gonzalez-Ronquillo, A. E. Relling, R. E. Nordquist, C. Nawroth, and E. Vargas-Bello-Pérez Einar. 2023. Toward assessing the role of dietary fatty acids in lamb's neurological and cognitive development. Frontiers in Veterinary Science. 10. doi: 0.3389/fvets.2023.1081141. 

Thorne JW, Bowdridge SA, Murdoch BM, Redden RR. Response of Rambouillet Lambs to an Artificial Gastrointestinal Nematode Infection. Animals (2022) DOI.org/10.3390/ani12091199

Southerland, C.N., Taylor, J.B., Yelich, J.V., Ellison, M.J. 2022. Refined methodology for identification of bitterness aversion in mature rams through quantification of fluid intake     and behavioral response to phenylthiocarbamide. Applied Animal Behaviour Science. 254:105706. https://doi.org/10.1016/j.applanim.2022.105706.

Stegemiller, M.R., Redden, R.R., Notter, D.R., Taylor, T., Taylor, J.B., Cockett, N.E., Heaton, M.P., Kalbfleisch, T.S., Murdoch, B.M. 2023. Using whole genome sequence to compare variant callers and breed differences of US sheep. Frontiers in Genetics. 13:1060882. https://doi.org/10.3389/fgene.2022.1060882.

Vargas Jurado, N., Notter, D.R., Taylor, J.B., Brown, D.J., Mousel, M.R., Lewis, R.M. 2022. Model definition for genetic evaluation of purebred and crossbred lambs including heterosis. Journal of Animal Science. 100:1-14. DOI: https://doi.org/10.1093/jas/skac188

Weaver, A.R., D.L. Wright, S.P. Greiner, and S.A. Bowdridge. 2023. Effect of sire fecal egg count estimated breeding value on parasite resistance traits in Haemonchus contortus infected Katahdin lambs. Sm. Rum. Res. 222: 106970. DOI:10.1016/j.smallrumres.2023.106970.

Weaver, A.R., D.L. Wright, S.P. Greiner, and S.A. Bowdridge. 2023. Effect of sire fecal egg count estimated breeding value on Katahdin lamb parasite resistance in pasture-based system. Sm. Rum. Res. 224:106984. DOI:10.1016/j.smallrumres.2023.106984.

Weaver, A.R., D.L. Wright, D.R. Notter, A.M. Zajac, S.A. Bowdridge, and S.P. Greiner. 2022. Evaluation of terminal sire breeds for hair sheep production systems: Forage environment. Small Ruminant Research, 213: 106739. DOI: 10.1016/j.smallrumres.2022.106739

Whaley, J. R., T. W. Murphy, C. L. Gifford, W. J. Means, J. P. Ritten, H. N. McKibben, C. M. Page, and W. C. Stewart. 2022. Effects of harvest season on carcass characteristics of     lambs harvested in the Intermountain West. App. Anim. Sci. 38:393-401.    doi:10.15232/aas.2022-02322.

Wilson, C.S., Petersen, J.L., Blackburn, H.D., Lewis, R.M. 2022. Assessing population structure and genetic diversity in U.S. Suffolk sheep to define a framework for genomic selection.          Journal of Heredity. 113(4):431-443. https://doi.org/10.1093/jhered/esac026.

 

 

Extension publications

Barnes, T. Campbell, B.J. 2023. Small ruminant nutrition considerations. 2023 Small Farm Conference and Trade Show. Mansfield, Ohio, USA. March 11, 2023.

Burke, J.M., 2023. Use of Red Cell to hasten recovery from anemia associated with barber   pole worm. For the Love of Goats (podcast).

Burke, J.M., Lewis, R.M., Notter, D.R., 2023. How does selection for parasite resistance in Katahdin sheep affect other important traits? Eastern Alliance for Production Katahdins Newsletter.

Burke, J.M., 2022. The value of using sires with high parasite resistance on offspring and the value of NSIP EBVs to sell breeding stock (Timely Topic series). www.wormx.info.

Campbell, B.J. 2022. Fall lambs and annual forages. 2022 eBarns Report – Ohio State Digital Ag Program. p. 54-55. 2022 eBarns report link.

Campbell, B.J. 2022. Delayed lamb weaning. 2022 eBarns Report – Ohio State Digital Ag Program. p. 52-53. 2022 eBarns report link.

Campbell, B.J., Zynda, H.M. 2022. Annual forages nutrient summary. 2022 eBarns Report – Ohio State Digital Ag Program. p. 18-19. 2022 eBarns report link.

Campbell, B.J., Barnes, T., Garcia-Guerra, A. 2022. AS-1025 – Small Ruminant Production: Are CIDRs Reusable? Ohioline: Ohio State University Extension Factsheet Publications. Factsheet link.

Campbell, B.J. 2023. Interpreting forage analyses and understanding ruminant livestock needs. Small Farm Ruminant Field Day. Jackson, Ohio, USA. April 29, 2023.

Campbell, B.J. 2023. Assessing wool – Natures natural fiber. Richland County Soil and Water Conservation District: Sheep and Wool Workshop. Mansfield, Ohio, USA. April 11, 2023.

Campbell, B.J. 2023. Parasite control and prevention in small ruminants. 2023 Small Farm Solutions Annual Conference. Kidron, Ohio, USA. February 25, 2023.

Campbell, B.J. 2023. Nutrition: Gestation, Nursing, Early Growth, and Maintenance. Lambing and Kidding Basics Field Day. LaRue, Ohio, USA. February 18, 2023.

Campbell, B.J. 2023. Ohio small ruminant production: Common challenges and questions. 2023 Midwest Veterinary Conference. Columbus, Ohio, USA. February 17, 2023.

Campbell, B.J. 2023. All about sheep and goats – The Ohio State University Ohio 4-H February Zoom Webinar Series: Handling and Welfare. Online. February 23, 2023. Video link.

Campbell, B.J. 2023. All about sheep and goats – The Ohio State University Ohio 4-H February Zoom Webinar Series: Health – Market lamb and breeding stock challenges. Online. February 8, 2023. Video link.

Campbell, B.J. 2023. All about sheep and goats – The Ohio State University Ohio 4-H February Zoom Webinar Series: Nutrition – Animal management and selection. Online. February 2, 2023. Video link.

Campbell, B.J. Smith J. 2023. Lambing and it’s challenges. Mid-Ohio Shepherd’s Ohio Grazing Conference. Mt. Hope, Ohio, USA. January 27, 2023.

Campbell, B.J. 2023. Small ruminant production flock nutrition considerations. Ag Pro Expo. Millersburg, Ohio, USA. January 26, 2023.

Campbell, B.J., Gelley, C.H. 2022. 2022 OSU Sheep Research Update. Buckeye Shepherd’s Symposium. Wooster, Ohio, USA. December 3, 2022.

Campbell, B.J., Gelley, C.H. 2022. Vegetation management of vineyards with sheep. 2022 Lamb and Wine Field Day. Piketon, Ohio, USA. November 5, 2022.

Campbell, B.J. 2022. Interpreting forage analyses and understanding ruminant livestock needs. Small Farm Ruminant Field Day. Wooster, Ohio, USA. October 8, 2022.

Campbell, B.J. 2022. Ruminant housing systems and principles. Small Farm Ruminant Field Day. Wooster, Ohio, USA. October 8, 2022.

Campbell, B.J. 2022. Condition your flock for winter. Mid-Ohio Shepherds group Mt. Hope Fall Meeting. Mt. Hope, Ohio, USA. September 27, 2022.

Campbell, B.J. 2022. Live lamb and carcass evaluation. Mid-Ohio Shepherds group Mt. Hope Fall Meeting. Mt. Hope, Ohio, USA. September 27, 2022.

Campbell, B.J. 2022. Health considerations for small sheep and goat operations. Farm Science Review: Small Farm Center. London, Ohio, USA. September 21, 2022.

Campbell, B.J. 2022. Meeting nutritional needs in solar grazing. Kentucky Sheep and Goat Development Office: Solar Grazing 101 Workshop. Harrodsburg, Kentucky, USA. September 17, 2022.

Campbell, B.J. 2022. Small ruminant marketing trends and opportunities. OSU Extension Muskingum County Monthly Breakfast Talk. Zanesville, Ohio, USA. September 6, 2022.

Campbell, B.J. 2022. Integrating sheep grazing into vineyard operations. 2022 Grape Field Day: Mulch and Mutton. Geneva, Ohio, USA. August 11, 2022.

Campbell, B.J. 2022. Sheep marketing options. An Evening with Lamb. Urbana, Ohio, USA. June 11, 2022.

Campbell, B.J. 2022. Quality comparisons of annual forages. Mid-Ohio Shepherds and Ohio Grazing Conference Resource Guide. November 2022. p. 67-68.

Campbell, B.J. 2022. Winter grazing: Annual forages improve lamb growth and health parameters. Mid-Ohio Shepherds and Ohio Grazing Conference Resource Guide. November 2022. p. 51-52.

Campbell, B.J. 2022. Challenges to Ohio sheep production. Ohio’s Country Journal. November 16, 2022. Article link.

Campbell, B.J. 2023. Thinking outside of the box – The use of plant compounds as natural anthelmintics. May 16, 2023. Extension article link.

Campbell, B.J. 2023. Capturing premiums with small ruminant products through niche marketing. March 21, 2023. Extension article link.

Campbell, B.J. 2023. 3 Challenges in Ohio sheep production systems. November 15, 2022. Extension article link.

Campbell, B.J. 2022. Small ruminant production: Are CIDRs Reusable? July 5, 2022. Extension article link.

Collins M.J., Roeder B.L., Yeoman C.J., Posbergh C.J. Characterizing the Wool Microbiome and its influence on Lamb and Wool Production. 139^th Annual Montana Wool Growers Convention, Billings, MT. Dec 2022.

Ehrhardt, R.A. 2022. Preventing common abortion disease outbreaks in sheep flocks on the upper Midwest USA.   Michigan Shepherd News.

Ehrhardt, R.A. 2022. Understanding sore mouth disease in small ruminants. Michigan Shepherd News.

Ehrhardt, R.A. 2022.  Braising and slow cooking techniques for lamb neck and shanks.   Michigan Shepherd News.

Ehrhardt, R.A. Michigan Sheep Production Opportunities.  Sheep health and nutrition workshop.  MSU Extension Sheep Producer Meeting and Workshop.  Mio, MI. Sept 22-23, 2022. 

Ehrhardt, R.A. Prevention and treatment of common nutritional disorders in small ruminants.  Michigan Veterinary Conference, Grand Rapids, MI, Oct 7, 2022.

Ehrhardt, R.A. Critical control points for lamb survival.  Michigan Veterinary Conference, Grand Rapids, MI, Oct 7, 2022.

Ehrhardt, R. A. The importance of the non-traditional US lamb market. (Moderator of panel discussion) American Lamb Summit, East Lansing, MI. August 8, 2022.

Ehrhardt, R.A. (Presenter/interviewee) Accelerated lambing podcast. American Sheep Industry Podcast Series, August 25, 2022.

Ehrhardt, R.A. Confinement Sheep Production.  (Panel discussion member).  Buckeye Shepherds Symposium, Wooster, OH. Dec. 3, 2022.

Ehrhardt, R.A. (Presenter and author).  “Critical control points for lamb survival”.  Ontario Masters Course Lamb Survival.  Nov. 15, 2022.

Ehrhardt, R.A. (Presenter and author).  “Managing coccidiosis in sheep production”.  Ontario Masters Course Lamb Survival.  Dec. 1, 2022.

Ehrhardt. R.A. (Presenter and author).  Considerations in facility design and on the economics of confinement sheep production. Buckeye Shepherds Symposium, Wooster, Ohio, Dec 2, 2022.

Ehrhardt, R. A. (Presenter and author).  Optimizing accelerated lambing systems to produce a consistent, year-round supply of lamb. American Lamb Summit, East Lansing, Mi   August 8, 2022.

Ehrhardt, R.A and K. Gould. (Presenter) “Fencing and water systems for grazing.”  MSU Extension Beginning Grazing School. Sept 7, 2022.

Ehrhardt, R.A and K. Gould. (Presenter) “Nutrition, health and welfare of grazing animals.”  MSU Extension Beginning Grazing School. Sept 14. 2022.

Ehrhardt, R.A., Metzger, M.M., and Recktenwald, E.R. Sustainable management of internal parasites in sheep and goats in the upper Midwest and Northeast USA.  4-part webinar series.  Session 1: Parasites of impact in sheep and goats and basics of their lifecycles. Session 2: Factors that determine the risk of parasite infection and grazing management strategies to reduce risk. Session 3: Control and infection monitoring approaches and methods to maintain refugia. Session 4: Putting it all together: developing a successful sustainable integrated parasite control program for your farm.  April 26, May 3, May 10, May 17 webinar sessions.  June 11 afternoon workshop. East Lansing, MI. 

Ehrhardt, R.A., Metzger, M.M., and Recktenwald, E.R. MSU Sheep and goats for small farms program. “Application of effective vaccines in US sheep and goat farms in 2023“, “Quality assurance in sheep and goat production”, “What does a vet client patient relationship look like for sheep and goat farms in Michigan in 2023?” March 11, 2022.

Ehrhardt, R.A., Recktenwald, E.B., and Metzger, M. MSU small ruminant birth management program. 4-part webinar series: Session 1:  Nutritional management of sheep and goats in late pregnancy and lactation; Session 2: Health management of sheep and goats at birth: vaccination schedules, newborn and maternal health; Session 3: Birth assistance and newborn management; Session 4: Identifying challenges in birth management on your farm and developing improvement plans addressing health management, nutritional management and facility improvements. Jan, 3, Jan. 10, Jan. 17, Jan. 24 and Session 5: Birth management workshop Jan. 28, 2023.  East Lansing, MI.

Gelley, C.H., Morris, J., Campbell, B.J., Romich, E., Moser, S. 2022. High quality forage and cool-season hay at solar sites with Ohio State. American Solar Grazing Association Monthly Webinar #58. Online. September 7, 2022.

Lewis, R., Boyer, T., Brito, L, Murphy, T., Freking, B., Burke, J., Taylor, B., 2022. Sheep GEMS. Sheep Industry News.

Murphy, T.W. Jr., Freking, B.A., Burke, J.M., Taylor, J.B., 2022. Updates from the USDA ARS Genetic reference flocks. Sheep Industry News.

Petersson, K.H., Kass, E.P.  Potential tools for managing internal parasites in pastured small ruminants. Cornell Sheep and Goat Symposium, Ithaca, NY, September 17, 2022.

Petersson, K.H. Best Management Practices for Integrated Gastrointestinal Parasite Control in Small Ruminants.  Dairy Sheep Association Virtual Symposium, November 9, 2022.

Petersson, K.H., Kass, E.P. Best Management Practices for Integrated Gastrointestinal Parasite Control in Small Ruminants.  AASRP ADGA Veterinary Continuing Education Program. Liverpool/Syracuse, New York, October 1, 2022.

Petersson, K.H., Kass, E.P. Got Worms? Integrated Parasite Management for Pastured Small Ruminants NOFA VT Winter Conference Intensives, Burlington, VT, February 19, 2023.

Recktenwald, E.B and R.A. Ehrhardt.  Major factors influencing the carbon footprint of US lamb production.  American Lamb Summit, Lansing, MI August 9, 2022.

Relling, A.E., Campbell, B.J. 2022. Soy hulls and lambs. 2022 eBarns Report – Ohio State Digital Ag Program. p. 56-57. 2022 eBarns report link.

Schaub D., Posbergh C.J. Associations between Microbial Communities and Physiological States in Range Sheep. 139^th Annual Montana Wool Growers Convention, Billings, MT. Dec 2022.

Wilson, C.S., Lewis, R.M. 2022. Probing the genetic diversity of Suffolk sheep. Sheep Industry News. Volume 26, Issue 5: 14-15.

 

Genetic reference flocks established at ARS stations. August 2022. American Sheep Industry Association Sheep Industry News. Sheep Industry News August 2022 (digitaledition.pub)

Sheep Industry News Genetics issue discussing the weigh system and the use of GPS units. Sheep Industry News August 2022 (digitaledition.pub)

 

 

08/08/2024

Peer-reviewed publications & meeting abstracts:

Ehrhardt RA, Giesy SL, Hileman SM, Houseknecht KL, Boisclair YR. Effects of the central melanocortin system on feed intake, metabolic hormones and insulin action in the sheep. J Anim Sci. 2023 Jan 3;101:skad398. doi: 10.1093/jas/skad398. PMID: 38035762; PMCID: PMC10734672.

Recktenwald, E.B. and R.E. Ehrhardt. 2024.  Greenhouse gas emissions from a diversity of sheep production systems in the United States. Agricultural Systems 217:1-10. https://doi.org/10.1016/j.agsy.2024.103915

Vergara Hernandez, F.B., B.D. Nielsen, J.M. Popovich, C.L. Panek, A.A. Logan, C.E. Robison, R.A. Ehrhardt, T.N. Johnson, N.J. Chargo, T.H. Welsh, A.M. Bradberry, J.L. Leatherwood and A.C. Colbath. 2024. Clodronate disodium does not produce measurable effects on bone metabolism in an exercising, juvenile, large animal model. PLOS One April 16, 2024. https://doi.org/10.1371/journal.pone.0300360

Rosales-Nieto^, C., A. N. Thompson, J. M. Vázquez-Garcí¹, R.A. Sánchez-López, M.J. Flores-Najera, V. Cuevas-Reye⁴, R. Ehrhardt⁵, A. Veiga-Lopez, G.B. Martin. 2024. Utilising male stimulus to improve the reproductive efficiency of 8-month nulliparous ewes and adult parous ewes.  Theriogenology 217:143-150. https://doi.org/10.1016/j.theriogenology.2024.01.023

Ehrhardt, R.A. and B. Makela. Precision feeding of prolific sheep in highly productive management systems.  Small Ruminant Symposium, American Society of Animal Science, Albuquerque, NM, July 2023.

Manuel E.E., Bradbery A.N., McCoski S.R., Marques R.S., Roeder B.L., Posbergh C.J.* 2024. Variation in wool cortisol, progesterone, and testosterone in Targhee ewes across physiological states and varying production levels. Sheep & Goat Research Journal 39, 7-11.

Shaub D., Maninger S., Roeder B.L., Posbergh C.J.* 2023. Technical Note: The Impact of Temperature and Humidity on United States Fine-Wool Fiber Diameter Measurements. Sheep & Goat Research Journal 38, 11-15.

Posbergh, C.*; Roeder, B.; Murphy, T.; Stewart, W.; Kott, R.; Hatfield, P.; Thomas, V.; Drummond, J. 2023. Ewe and lamb body condition, breeding and production data from the Montana Agricultural Experiment station, Montana State University, Bozeman, MT from 1960 - 2012. Ag Data Commons. doi:10.15482/USDA.ADC/1528462

DelCurto, T. *, S. A. Wyffels, M. Vavra, M. J. Wisdom, and C. J. Posbergh. 2023. Western Rangeland Livestock Production Systems and Grazing Management. In: L. B. McNew, D. K. Dahlgren and J. L. Beck, editors, Rangeland Wildlife Ecology and Conservation. Springer International Publishing, Cham. p. 75-106. http://dx.doi.org/10.1007/978-3-031-34037-6_4

Bochantin-Winders, K., F. Baumgaertner, J. Hurlbert, A.C.B. Menezes, J.D. Kirsch, S. Dorsam, C.S. Schauer, and C.R. Dahlen.  Divergent planes of nutrition in mature rams inflences body composition, hormone and metabolite concentrations, and offspring birth measurements, but not semen characteristics or offspring growth.  J. Anim. Sci.  (SUBMITTED).

Perez Segura LF, Ramirez RF, Relling AE, Roque-Jimenez JA, Zhang N, Vargas-Bello-Pérez E, Lee-Rangel HA. 2023. Effects of maternal calcium propionate supplementation on offspring productivity and meat metabolomic profile in sheep. PLoS One. 18:e0294627.       doi: 10.1371/journal.pone.0294627

Rivera-Bautista C, Grajales-Lagunes A, Relling A, Chay-Canul A, Vazquez-Valladolid A, Vargas-Bello-Pérez E, Lee-Rangel HA. 2023. Effect of age and diet on carcass and meat quality in ewes. Heliyon. 9:e22350. doi: 10.1016/j.heliyon.2023.e22350.

Carranza Martin, A. C., A. Garcia Guerra, and A. E. Relling. 2023. Effects of polyunsaturated fatty acid supplementation on plasma and follicular fluid resolvin D1 concentration and mRNA abundance in granulosa cells in ewes. J. Anim. Sciences. doi:10.1093/jas/skad310

De Carlis, M. S. P, J. S. Biava, T. U. Sturion A. S. A. Lais, N. R.  Eckermann, P. D.  Montanher, P. C. Gonzales Dias Junior, A. C. Silva Vicente, J. H. Comelli, R S. Goulart, A. E.  Relling, A. V. Pires, and E. M. Ferreira, 2023. Effect of different levels of physically effective neutral detergent fibre from forage in whole corn grain-based diets for feedlot lambs. Animal Production Science. doi: 10.1071/AN22394.

Roque-Jiménez J. A.,  M. F. Oviedo-Ojeda, M. Whalin, H. A. Lee-Rangel, and A. E. Relling. 2023.  Ewe early gestation supplementation with eicosapentaenoic and docosahexaenoic acids affects the liver, muscle, and adipose tissue fatty acid profile and liver mRNA expression in the offspring, Journal of Animal Science, 101:skad144, https://doi.org/10.1093/jas/skad144

Acharya, R.S., Leslie, T., Burke, J.M., Naithani, K., Fitting, E., Loftin, K., Joshi, N., 2024. Sheep grazing influences the abundance, diversity, and community composition of wild bees and other insects in livestock pastures. Ecol. Indicat. 162, 111839.

Acharya, R.S., Burke, J.M., Joshi, N., 2024. Assessing pollinator-seed mix plantings for the presence of undesirable plant species in the livestock pasture system. J. Entomol. Sci. (In Press).

Nilson, S.M., Burke, J.M., Murdoch, B.M., Morgan, J.L.M., Lewis, R.M., 2024. Pedigree diversity and implications for genomic selection of Katahdin sheep. J. Anim. Breed. Gen. 00, 1-13  https://doi.org/10.1111/jbg.12842.

Arisman, B.C., Burke, J.M., Morgan, J.L.M., Lewis, R.M., 2023. Genotype by environment interaction and heteroscedasticity influence the expression of parasite resistance in Katahdin sheep. J. Anim. Sci. skad228, https://doi.org/10.1093/jas/skad228

Preston, E., Williams, C., Burke, J., Delcambre, B., Scully, C., Vatta, A., 2024. Effectiveness of the nematophagous fungus, Duddingtonia flagrans, in consuming infective stage larvae following aging of the spores in sheep mineral mix. AAVP (abstr.).

Avery, R., Urie, N., Branan, M., Burke, J.M., Miller, J.E., 2024. United States Department of Agriculture National Animal Health Monitoring System Goat 2019 study: Regional distribution of gastrointestinal nematodes and lungworms in the United States. (abstr. ASAS, Calgary, CA).

Pinto, L.F.B., Lewis, R.M., Rocha, A.O., Nilson, S.M., Murphy, T.W., Wilson, C.S., Freking, B.A., Burke, J.M., Brito, L.F., 2024. Survival analyses of the productive life in U.S. Katahdin ewes. (abstr. ASAS, Calgary, CA).

Pinto, L.F.B., Lewis, R.M., Rocha, A.O., Nilson, S.M., Murphy, T.W., Wilson, C.S., Freking, B.A., Burke, J.M., Brito, L.F., 2024. Heritability estimates for longevity-related traits in U.S. Katahdin ewes. (abstr. ASAS, Calgary, CA).

Burke, J.M., Lewis, R.M., Murphy, T.W., Freking, B.A., 2024. Use of genetics to estimate resistance of gastrointestinal nematode infection in sheep. The 9^th Novel Approaches Conference, St. George’s University, Granada, West Indies. March 2024.

Forbes, R.M., Murphy, T.W., Burke, J.M., Lewis, R.M., 2024. Adding parasite resistance to the breeding objective in hair sheep. (abstr. Midwest Sec. ASAS).

Nilson, S.M., Burke, J.M., Becker, G.M., Murdoch, B.M., Petersen, J.L., Lewis, R.M., 2024. Genomic and pedigree diversity of Katahdin sheep: The impacts of breeding and selection. (abstr. Int. Plant Anim Gen.; accepted 11/27/23).

Nilson, S.M., Burke, J.M., Becker, G.M., Murdoch, B.M., Petersen, J.L., Lewis, R.M., 2024. Genomic diversity of Katahdin sheep and impacts on genomic prediction. (abstr. Midwest Sec. ASAS).

Avery, R., Urie, N., Branan, M., Burke, J.M., Miller, J.E., 2024. 2019 USDA National Animal Health Monitoring System Goat 2019 study: Distribution of gastrointestinal nematodes. J. Anim. Sci. 102 (Suppl. 1), 89 (abstr.).

Burke, J.M., Wood, E., Lee, C., Carpenter, A., Kojima, N., Fagre, A., Calvert, A., Thrasher, E., Martin, S., Staples, J.E., Gould, C., Rothfeldt, L., Dulski, T., 2024. Impact of Cache Valley Virus in an Arkansas sheep flock. J. Anim. Sci. 102 (Suppl. 1), 90-91 (abstr.).

Burke, J.M., Rohila, S., Petersson, K., Kass, E. Vatta, A.F., Miller, J.E., 2024. Determining in vivo and in vitro predatory activity of Duddingtonia flagrans and interaction with dietary coccidiostat. J. Anim. Sci. 102 (Suppl. 1), 91-92 (abstr.).

Bott, C. A., S. W. Breck, T. W. Murphy, B. A. Freking, C. A. Lopez Gonzalez, C. Peavey, D. Prause, A. Sommers, C. Landers, and J. K. Young. 2024. Flashtags: Evaluating a novel deterrent to reduce livestock predation. Human-Wildlife Interactions.

Cushman, R. A., H. K. Yake, A. P. Snider, C. A. Lents, T. W. Murphy, and B. A. Freking. 2023. An extreme model of fertility in sheep demonstrates the basis of controversies surrounding antral follicle count and circulating concentrations of anti-Müllerian hormone as predictors of fertility in ruminants. Anim. Reprod. Sci.

Knuth, R. M., C. M. Page, W. C. Stewart, G. L. Hummel, K. L. Woodruff, J. R. Whaley, A. L. Springer, K. J. Austin, T. W. Murphy, B. Bisha, and H. C. Cunningham-Hollinger. 2024. Milk microbiome in the first month of lactation and at weaning from ewes supplemented with zinc pre- and postpartum. J. Anim. Sci.

Murphy, T. W., B. A. Freking, and G. L. Bennett. 2023. Comparison of three maternal composite sheep breeds managed under pasture lambing and purebred or terminal mating systems: ewe body weight, reproductive efficiency, and longevity. J. Anim. Sci.

Forbes, R. M., T. W. Murphy, J. M. Burke, and R. M. Lewis. 2024. Adding Parasite Resistance to the Breeding Objective in Hair Sheep. Midwest Sec. Am. Soc. Anim. Sci. Ann. Meeting.

Yazar Gunes, H., L. F. Brito, T. W. Murphy, C. S. Wilson, R. M. Lewis. 2024. Estimates of genetic parameters for weight, wool, and carcass traits of Rambouillet sheep. Midwest Sec. Am. Soc. Anim. Sci. Ann. Meeting.

Julian, A. A. M., J. D. Scasta, ^#W. C. Stewart. 2024. Sheep winter diets parameterized with fecal DNA metabarcoding and forage sampling informs mineral nutrition management. Rangeland Ecology and Management. 94:168-177 https://doi.org/10.1016/j.rama.2024.03.003

Newman, C.E., Gifford, C.L., Anderson, D.P., Scasta, J.D., Stewart, W.C. 2024. US wool industry perceptions of digital record keeping and wool supply-chain traceability. App Anim Sci., 40(2), 205-211, doi.org/10.15232/aas.202302496.

Becker, G.M., K. A. Shira, J. L. Woods, S. F. Khilji, C. S. Schauer, B. T. Webb. W. C. Stewart, B. M. Murdoch. 2023. Angular limb deformity associated with TSPAN18, NRG# and NOVA2 in Rambouillet rams  Scientific  Reports. 13: 16059. https://doi.org/10.1038/s41598-023-43320-6.

Becker, G.M., J. L. Woods, C. S. Schauer, W. C. Stewart, B. M. Murdoch. 2023 Genetic association of wool quality characteristics in U.S. Rambouillet sheep. Frontiers in Genetics. 13:1081175. https://doi.org/10.3389/fgene.2022.1081175

Kersh, J. D. Scasta, J. Derner, H. Fraley, W. C. Stewart. Sheep foraging relative to stock density, time of day, and sheep type in a poisonous plant context. American, Canadian, and Western Section of Society of Animal Science, July 16-20, 2023

Newman, C. L. Gifford, W. C. Stewart. Implementation of blockchain technologies in the U.S. sheep Industry: Producer and industry perceptions. American, Canadian, and Western Section of Society of Animal Science, July 16-20, 2023

McKensie Phillips, C. L. Gifford, T. W. Murphy, B. A Freking, C. E. Newman, C. R. Ritchie, W. C. Stewart. Characterization of Katahdin Lamb Carcasses in a Traditional Lamb Marketing Context. Canadian, and Western Section of Society of Animal Science, July 16-20, 2023

Laverell, T. W. Murphy, J. M. Smylie, A. Kersh, T. E. Engle, W. C. Stewart. Serum mineral and vitamin concentrations in central performance tested Rambouillet rams with and without angular limb deformities. Canadian, and Western Section of Society of Animal Science, July 16-20, 2023

Wilson, C.S., Taylor, J.B., Murphy, T.W., Stewart, W.C., Notter, D.R., and Lewis, R.M. 2023. Targhee sire benchmarking at the U.S. Sheep Experiment Station. Annual meeting of the American Society of Animal Science, Albuquerque, NM, July 16-20, 2023.

Lee, J.H., Wildeus, S., Lemma, B.B., Kouakou, B. 2023. Carcass and meat quality characteristics of purebred (hair) and crossbred (wool × hair) sheep lambs grazing fescue pasture as influenced by breed type, sex, and supplementation. Journal of Applied Animal Science Research 52(1):1-14 https://doi.org/10.1080/09712119.2023.2290131

Lee, J.H.; Wildeus, S.; O’Brien, D.; Kouakou, B. Impact of Agro-Byproduct Supplementation on Carcass Traits and Meat Quality of Hair Sheep and Wool × Hair Crossbreds Grazing on Fescue Pasture. Animals 2024, 14, 1217.  https://doi.org/10.3390/ani14081217

Wildeus, Stephan, Dahlia J O'Brien, MacKenzie Robertson, Javin Davis. 2024. Use of soy hull as a supplement during late gestation and lactation for landrace hair sheep ewes in a forage-based system, J. Anim. Sci, Vol. 102, Suppl. 1:85–86, https://doi.org/10.1093/jas/skae019.096

O'Brien, Dahlia, Stephan Wildeus, Javin Davis, MacKenzie Robertson, Kwame Matthews. 2024. Deworming to improve growth in early-weaned spring born hair sheep lambs. J. Anim. Sci., Vol. 102, Suppl. 1: 94–95, https://doi.org/10.1093/jas/skae019.106

Robertson, MacKenzie, Dahlia O'Brien, Stephan Wildeus, Javin Davis, Kwame Matthews. 2024. Supplementation with soy hull during late gestation and lactation on parasite indicators in hair sheep ewes. J. Anim. Sci., Vol. 102, Suppl. 1: 106–107, https://doi.org/10.1093/jas/skae019.119

Jessica Queen, Jessica,, Dahlia O'Brien, Stephan Wildeus, Javin Davis, MacKenzie Robertson, Kwame Matthews, 2024. The efficacy of a natural fungus (Duddingtonia flagrans) in reducing gastrointestinal nematode indicators in lambs. J. Anim. Sci., Vol. 102, Suppl. 1:07, https://doi.org/10.1093/jas/skae019.120

Weaver, A.R., D.L. Wright, S.P. Greiner, and S.A. Bowdridge. 2023. Effect of sire fecal egg count estimated breeding value on parasite resistance traits in Haemonchus contortus infected Katahdin lambs. Sm. Rum. Res. 222: 106970. DOI:10.1016/j.smallrumres.2023.106970.

Johnson, S.R., Middleton, D., Greiner, S.P. and Bowdridge, S.A. 2023. The effect of innate immune receptor activation on differential breed responses to Haemonchus contortus in sheep. J. Anim. Sci, 101:Suppl_1. DOI: 10.1093/jas/skad068.132

Teddleton, H.G. J.J. Garza, S.P. Greiner, and S.A. Bowdridge. 2023. Effect of sheep breed on neutrophil chemotaxis to Haemonchus contortus larval antigen. J. Anim. Sci. 101:Suppl_1. DOI:10.1093/jas/skad068.126.

Bentley, K.L., D.L. Wright, S.P. Greiner, and S.A. Bowdridge. 2023. Evaluating lipopolysaccharide-induced behavioral and immune response differences in sheep divergently bred for parasite resistance. J. Anim. Sci. 101: Suppl_1. DOI:10.1093/jas/skad068.127.

Valliere, N.K., D.L. Wright, S.P. Greiner, S.A. Bowdridge and A.R. Weaver. 2023. Evaluation of supplemental feeding behavior and growth performance in Katahdin lambs divergently selected for fecal egg count estimated breeding value. J. Anim. Sci. 101: Suppl_1. DOI:10.1093/jas/skad068.128.

Bentley, K.L., A.R. Weaver, D.L. Wright, S.P. Greiner, and S.A. Bowdridge. 2023. The effect of postweaning fecal egg count EBV on colostrum IgG concentration in Katahdin dams. J. Anim. Sci. 101:Suppl_1. DOI: 10/1093/jas/skad068.130.

Maierle, C.L., A.R. Weaver, S.P. Greiner, E.E Felton, and S.A. Bowdridge. 2023. Evaluation of feeding behavior of Katahdin lambs during Haemonchus contortus infection. J. Anim. Sci. 101:Suppl_1. DOI:10.1093/jas/skad068.131.

Extension Publications and Presentations:

Recktenwald, E.B. and R.A. Ehrhardt. 2023.  Greenhouse gas mitigation strategies for the US sheep industry-Summary.   American Lamb Board. Greenhouse+gas+mitigation+strategies+V5+(2).pdf (squarespace.com)

Ehrhardt, R.A. 2023. The basics of improving reproductive outcomes in your flock. Michigan Shepherd News

Ehrhardt, R.A. 2023. Lessons learned during 12 years of grazing cover crops with sheep. Michigan Shepherd News

Ehrhardt, R.A. 2023. The essentials of feeding market lambs. Michigan Shepherd News

Campbell, B.J. 2024. Feeding your herd. All about Goats! Spring 2024 Webinar Series. Online. April 22, 2024.

Campbell, B.J. 2024. Preparing your lambing facilities. 2024 Southwest Ohio Sheep Workshop. Cincinnati, Ohio, USA. March 22, 2024.

Campbell, B.J. 2024. 395. Integrated Parasite Management: On-Farm Producer Tools. 2024 Midwest Veterinarian Annual Conference. Columbus, Ohio, USA. February 23, 2024.

Campbell, B.J. 2024. Lamb Selection: Preparing for Success. Mahoning County Lamb Exhibitors Monthly Winter Meeting. Online. February 22, 2024.

Campbell, B.J. 2024. Grazing sheep within utility-scale solar: Thoughts and considerations. American Society of Farm Managers and Rural Appraisers – Ohio Chapter: 2024 Winter Meeting. Lewis Center, Ohio, USA. January 18, 2024.

Campbell, B.J. 2023. 2023 Solar research update. 2023 Buckeye Shepherd’s Symposium. Wooster, Ohio, USA. December 2, 2023.

Thompson, B., Relling, A., Campbell, B.J. 2023. Are distiller’s grains right for your operation? 2023 Buckeye Shepherd’s Symposium. Wooster, Ohio, USA. December 2, 2023.

Tacuri Vera, M., Wenner, B., Campbell, B.J. 2023. Impact of pumpkin seeds on parasite load in sheep. 2023 Buckeye Shepherd’s Symposium. Wooster, Ohio, USA. December 2, 2023.           

Campbell, B.J. 2023. Forage as vegetative cover for utility-scale solar in the Midwest, understanding management considerations as it relates to forage and livestock production. EUCI hosted program: Agrivoltaics/Dual Use Solar Fundamentals & Best Practices. Online. November 15, 2023.

Campbell, B.J. 2023. Understanding the Nutritional Needs and Challenges of Small Ruminant Production. 2023 Kentucky Sheep and Goat Annual Producer Conference. Danville, Kentucky, USA. October 14, 2023.

Campbell, B.J. 2023. Sheep and Goat Nutrition 101: Tools of the Trade. 2023 Kentucky Sheep and Goat Annual Producer Conference. Danville, Kentucky, USA. October 14, 2023.

Campbell, B.J. 2023. Ration Balancing Made Easy. 2023 Kentucky Sheep and Goat Annual Producer Conference. Danville, Kentucky, USA. October 14, 2023.

Campbell, B.J. 2023. Small ruminant production research update and commonly asked questions through Extension. 2023 New ANR OSU Extension Educator On-boarding program – Livestock. Wooster, Ohio, USA. October 6, 2023.

Campbell, B.J. 2023. Impacts of Large-Scale Solar on Rural Communities – A Research Perspective. Solar Energy Impact Series: Session 1 – Perspectives on the Opportunities and Impacts of Solar Installation in Agricultural Areas. Online. September 28, 2023.

Campbell, B.J. 2023. Experiencing Lamb. Fall Mid-Ohio Shepherds Meeting. Sugarcreek, Ohio, USA. September 25, 2023.

Campbell, B.J. 2023. The Current Wool Breed Marketing Paradox. Farm Science Review: Small Farm Center. London, Ohio, USA. September 19, 2023. Invited presentation.

Campbell, B.J. 2023. Small Ruminant FAMACHA Training Workshop. Belmont County OSU Extension Small Ruminant Training Program. Jacobsburg, Ohio, USA. August 31, 2023.

Campbell, B.J. 2023. Considerations for Targeted Grazing and Vegetation Management Systems. 2023 Annual Katahdin Expo and Sale. Van Wert, Ohio, USA. August 11, 2023. 

Campbell, B.J. 2023. Integrated Parasite Management: On-farm Producer Tools. 2023 Annual Katahdin Expo and Sale. Van Wert, Ohio, USA. August 11, 2023.

Campbell, B.J. 2023. Forage as vegetative cover for utility-scale solar in the Midwest, understanding management considerations as it relates to forage and livestock production. 2023 OSU EmPOWERment Bootcamp. Columbus, Ohio. USA. August 8, 2023.

Campbell, B.J. 2023. Career path opportunities in Animal Sciences beyond being a veterinarian. OSU Vet Camp. Columbus, Ohio, USA. August 8, 2023.

Campbell, B.J. 2023. How sheep and goats can complement your livestock operation. Morgan County OSU Extension 21st Annual Ag and Livestock Field Day. McConnelsville, Ohio,           USA. July 31, 2023.

Campbell, B.J. 2023. Using flock records and animal genetics to improve your operations end product – 2023 Howard Wyman Sheep Industry Leadership School: Lamb 509 Program. National Lamb Feeders Association Annual Event hosted by The Ohio State University Department of Animal Sciences. Columbus, Ohio, USA. July 10, 2023.

Campbell, B.J. 2023. Small Ruminant Production Flock Nutrition Considerations – 2023 Howard Wyman Sheep Industry Leadership School: Lamb 509 Program. National Lamb Feeders Association Annual Event hosted by The Ohio State University Department of Animal Sciences. Columbus, Ohio, USA. July 10, 2023.

Campbell, B.J. 2023. Market/Finished Lamb Evaluation – 2023 Howard Wyman Sheep Industry Leadership School: Lamb 509 Program. National Lamb Feeders Association Annual Event hosted by The Ohio State University Department of Animal Sciences. Columbus,        Ohio, USA. July 10, 2023.

Campbell, B.J. 2023. Small Ruminant Workshop: FAMACHA and Integrated Parasite Management. Harrison County OSU Extension Small Ruminant Training Program. Cadiz, Ohio, USA. June 2, 2023.

Campbell, B.J. 2023. Protein supplementation. 2023 eBarns Report – Ohio State Digital Ag Program. p. 46-47. 2023.

Campbell, B.J. 2023. Moxidectin Utilization. 2023 eBarns Report – Ohio State Digital Ag Program. p. 48-49. 2023.

Campbell, B.J. 2023. Thinking Outside the Box: The use of plant compounds as natural anthelmintics (de-wormers). Mid-Ohio Shepherds and Ohio Grazing Conference        Resource Guide. November 2023. p. 40-41.

Campbell, B.J. 2023. Comparison of Wool/Meat, Hair, and Dairy Sheep. Mid-Ohio Shepherds and Ohio Grazing Conference Resource Guide. November 2023. p. 44-45.

Campbell, B.J. 2023. Capturing premiums with small ruminant products through niche marketing. The Dorper Report. Spring 2023. Vol. 27, Issue 2. p. 34-35.

Murphy, T. “Meet the research leaders at NSIP”. August 2023. American Sheep Industry Association Sheep Industry News.

Murpty, T. “A journey in sheep GEMS”. August 2023. American Sheep Industry Association Sheep Industry News.

Murphy, T. “The potential value of international sheep evaluations”. August 2023. American Sheep Industry Association Sheep Industry News.

Murphy, T. “Sheep GEMS update lambing assistance and udder health scores”. December 2023. Eastern Alliance of Production Katahdins Newsletter.