Determining the valine requirement of the mgr-producing lactating sow

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dc.contributor.author Richert, B.T.
dc.contributor.author Pettigrew, J.E.
dc.contributor.author Walker, R.D.
dc.contributor.author Johnston, L.J.
dc.contributor.author Blum, S.A.
dc.contributor.author Tokach, Michael D.
dc.contributor.author Goodband, Robert D.
dc.contributor.author Nelssen, Jim L.
dc.date.accessioned 2010-03-26T19:18:07Z
dc.date.available 2010-03-26T19:18:07Z
dc.date.issued 2010-03-26T19:18:07Z
dc.identifier.uri http://hdl.handle.net/2097/3362
dc.description.abstract Two hundred-three large white x Landrace or large white x Chester White x Landrace sows (40 or 41/treatment, avg parity 3.7) were used in a 26 d lactation experiment to determine the valine requirement of high-producing sows. All diets were formulated to .9% lysine with all amino acids other than valine formulated to be at least 110% of their respective ratios relative to lysine. Synthetic valine replaced cornstarch to provide .75, .85, .95, 1.05, and 1.15% dietary valine. Corresponding valine:lysine ratios were 83, 94, 106, 117, and 128% of lysine. The experiment was conducted at two experiment stations from July, 1993 through January, 1994. Mean litter size of all treatments after adjustment was 10.33 pigs. Sow feed intake and grams of lysine intake were not different among treatments. Grams of valine intake increased linearly as dietary valine increased. Litter weight at d 21 and weaning increased linearly with increasing dietary valine. Litter weight gain from d 0 to 7 increased linearly as dietary valine increased to 1.15 %. Litter weight gain from d 0 to 21 and d 0 to weaning increased linearly as dietary valine increased, with the greatest portion of the response observed as valine increased to 1.05% of the diet. Dietary valine had no effect on sow weight change, 10th rib backfat (BF) change, or last lumbar BF change from d 0 to 21 or d 0 to weaning. Days to estrus postweaning were not affected by dietary valine. These results demonstrate that high-producing sows have a dietary valine requirement of at least 117% of lysine during lactation (66.4 g/d valine), much greater than is currently recommended by NRC (1988; 100% of lysine) or ARC (1981; 70% of lysine) to maximize litter weaning weight and litter weight gain. en_US
dc.publisher Kansas State University. Agricultural Experiment Station and Cooperative Extension Service en_US
dc.relation.isPartOf Swine day, 1994 en_US
dc.relation.isPartOf Kansas Agricultural Experiment Station contribution; no. 95-175-S en_US
dc.relation.isPartOf Report of progress (Kansas State University. Agricultural Experiment Station and Cooperative Extension Service); 717 en_US
dc.subject Swine en_US
dc.subject Valine en_US
dc.subject Lactation en_US
dc.subject Sows en_US
dc.title Determining the valine requirement of the mgr-producing lactating sow en_US
dc.type Conference paper en_US
dc.date.published 1994 en_US
dc.citation.epage 14 en_US
dc.citation.spage 10 en_US
dc.description.conference Swine Day, Manhattan, KS, November 17, 1994 en_US
dc.contributor.authoreid mtokach en_US
dc.contributor.authoreid goodband en_US
dc.contributor.authoreid jnelssen en_US


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