Determining the optimal isoleucine:lysine ratio in diets for the segregated early-weaned pig

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dc.contributor.author Bergstrom, J.R.
dc.contributor.author Loughmiller, J.A.
dc.contributor.author Musser, R.E.
dc.contributor.author Nessmith, W.B.Jr.
dc.contributor.author Nelssen, Jim L.
dc.contributor.author Tokach, Michael D.
dc.contributor.author Goodband, Robert D.
dc.contributor.author Dritz, Steven S.
dc.date.accessioned 2010-03-02T18:20:20Z
dc.date.available 2010-03-02T18:20:20Z
dc.date.issued 2010-03-02T18:20:20Z
dc.identifier.uri http://hdl.handle.net/2097/2799
dc.description.abstract A 14-d growth trial was conducted to evaluate effects of increasing isoleucine: lysine ratios on growth performance of the segregated early-weaned pig. Twelve experimental diets included two levels of lysine (1.15%and 1.50% digestible lysine) and six digestible isoleucine: lysine ratios (40, 45,50, 55, 60, and 65% relative to lysine) in a 2 x 6 factorial arrangement. From d 0 to 14, growth performance was improved by feeding 1.50% digestible lysine. A linear improven1ent in growth performance occurred from d 0 to 7 as the isoleucine:lysine ratio increased. Although a significant quadratic response was not observed, little improvement in pig performance occurred above the 60% apparent digestible isoleucine: lysine ratio. Increasing isoleucine had no effect on the overall growth perforn1ance from d 0 to 14, but plasma urea nitrogen (PUN) was linearly reduced on d 14. These data suggest that the isoleucine requirement for the SEW pig is approximately 60% of lysine on an apparent digestible basis. However, because this response was observed only in the first week postweaning, further research is required to confirm this high a requirement for isoleucine. en_US
dc.publisher Kansas State University. Agricultural Experiment Station and Cooperative Extension Service en_US
dc.relation.isPartOf Swine day, 1996 en_US
dc.relation.isPartOf Kansas Agricultural Experiment Station contribution; no. 97-142-S en_US
dc.relation.isPartOf Report of progress (Kansas State University. Agricultural Experiment Station and Cooperative Extension Service); 772 en_US
dc.subject Swine en_US
dc.subject Early-weaned pigs en_US
dc.subject Amino acid en_US
dc.subject Isoleucine en_US
dc.title Determining the optimal isoleucine:lysine ratio in diets for the segregated early-weaned pig en_US
dc.type Conference paper en_US
dc.date.published 1996 en_US
dc.citation.epage 29 en_US
dc.citation.spage 26 en_US
dc.description.conference Swine Day, Manhattan, KS, November 21, 1996 en_US
dc.contributor.authoreid jbergstr en_US
dc.contributor.authoreid jnelssen en_US
dc.contributor.authoreid mtokach en_US
dc.contributor.authoreid goodband en_US
dc.contributor.authoreid dritz en_US


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