SAES-422 Multistate Research Activity Accomplishments Report

Sections

Basic Information
Additional Info

Status: Approved

Basic Information

Project No. and Title: S1044 : Nutritional Systems for Swine to Increase Reproductive Efficiency
Period Covered: 10/01/2008 to 09/01/2009
Date of Report: 03/01/2010
Annual Meeting Dates: 01/05/2010 to 01/06/2010

The January, 2010 meeting of the S-1044 committee was attended by the following: van Heugten, Eric (Eric_vanHeugten@ncsu.edu)- North Carolina State University (chair) Dove, Robert (crdove@uga.edu)- University of Georgia (vice-chair) Estienne, Mark (mestienn@vt.edu)- Virginia Tech (secretary) Brendemuhl, Joel (brendj@ufl.edu)- University of Florida Chiba, Lee (chibale@auburn.edu)- Auburn University Hostetler, Chris (Chris.Hostetler@sdstate.edu)- South Dakota State University) Lindemann, Merlin (merlin.lindemann@uky.edu)- University of Kentucky Maxwell, Charles (cmaxwell@uark.edu)- University of Arkansas Southern, Lee (LSouthern@agcenter.lsu.edu)- Louisiana State University

Brief Summary of Minutes of Annual Meeting

Legacy attachment file:

[Minutes]

Accomplishments

Activities: Drs. Joel Brendemuhl from the University of Florida, Eric van Heugten from North Carolina State University, and Lee Southern from Louisiana State University are participating in a project examining the effects of low protein diets on the performance of sows. The researchers are now completing laboratory analyses and are moving forward with publication of a manuscript detailing the study. Dr. Robert Dove from the University of Georgia is the lead investigator on a study focused on the effects of dietary supplementation with carnitine on performance of sows. Laboratory analyses of blood for concentrations of non-esterified fatty acids are being conducted, after which Dr. Dove and colleagues will move forward with publication of the data. Drs. Merlin Lindemann from the University of Kentucky, Allen Harper from Virginia Tech, Charles Maxwell from the University of Arkansas, Eric van Heugten from North Carolina State University, and Robert Dove from the University of Georgia are participating in a project examining the effects of phytase on the performance of sows. The researchers, led by Dr. Lindemann, are in the process of data analysis and once complete will move forward with publication of a manuscript detailing the study. Dr. Charles Maxwell is the lead investigator on a project focused on determining the effects of dietary inclusion of organic sources of minerals on reproductive performance in sows. The experiment is underway and data is being collected at Virginia Tech, Southern Illinois University, the University of Minnesota, Purdue University, Louisiana State University, and South Dakota State University, as well as at a research unit in Brazil. Dr. Lee Southern is the lead investigator on a project focused on determining the effects of dietary inclusion of spray dried plasma protein on performance in lactating sows. Data has already been collected at the University of Arkansas and the University of Kentucky. The experiment is underway or will soon be started at Oklahoma State University, the University of Georgia, Auburn University, and Virginia Tech, as well as at a research unit in Brazil.

Impacts

Final determination of the economic benefit of low protein diets for sows awaits final data accumulation and analysis. However, the preliminary results clearly demonstrate that nitrogen excretion is reduced when low protein diets are fed. This will have a major impact in reducing total nitrogen excretion which should reduce swine unit odors and will definitely impact several waste management issues (e.g., total acreage needed for waste application).
Final determination of the economic benefit of carnitine addition awaits data analysis. However, the preliminary results from one station confirm initial hypotheses that improved energy utilization will increase rebreeding performance. Assuming other stations provide data similar in magnitude of response, the benefit:cost ratio for this compound will also easily exceed 20:1.
Final determination of the economic benefit of phytase addition awaits data analysis. However, the preliminary results clearly demonstrate a reduction in phosphorus excretion when phytase is used. This will have a major impact in reducing total phosphorus excretion which will impact several waste management issues (e.g., total acreage needed for waste application, number of years before critical mineral levels are reached on various soil types).
Final determination of the economic benefit of dietary inclusion of organic sources of minerals in gestating and lactating sow diets, and of spray-dried plasma protein in lactating sow diets awaits completion of data accumulation from participating stations, laboratory analyses, and data analysis.

Publications

no publications for the current reporting year

Back