Appropriate methionine:lysine ratio for the segregated early-weaned pig

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Show simple item record Owen, K.Q. Richert, B.T. Friesen, K.G. Goodband, Robert D. Nelssen, Jim L. Tokach, Michael D. Dritz, Steven S. 2010-03-26T19:21:27Z 2010-03-26T19:21:27Z 2010-03-26T19:21:27Z
dc.description.abstract A total of 350 crossbred pigs (9.0 ± 2 d old and 8.4 lb +f- 2.5 BW) was used to determine the appropriate methionine: lysine ratio in diets for the segregated early-weaned pig. Two lysine levels (1.8 and 1.4%) and five methionine levels within each lysine level were used in a 2 x 5 factorial arrangement. Methionine: lysine ratios ranged from 21.5 to 33.5 %. From d 0 to 21 postweaning, all diets contained 25%dried whey, 12% lactose, 7.5% spray dried porcine plasma, 6.0% select menhaden fish meal, and 1.75% spray-dried blood meal. The basal diets containing 1.4 and 1.8% lysine were formulated to contain .301 and .387% dietary methionine, respectively. Cornstarch was replaced by Alimet(equivalent to 88 methionine) to provide the four additional experimental methionine concentrations for each lysine level. Cystine contents of all diets within each lysine level were identical at .52 and .66% for the 1.4 and 1.8% lysine diets, respectively. All other amino acids were formulated on a digestible basis to ensure that methionine was first limiting. No methionine x lysine interactions were observed throughout the 21-day experiment. Increasing dietary methionine increased average daily gain (ADG) during each week of the trial, with the maximum observed at approximately .50 and .39% methionine in the diets containing 1.8 and 1.4% dietary lysine, respectively (27.5% of lysine). Dietary methionine level had no effect on feed efficiency (F/G). Increasing dietary lysine improved ADG and F/G. In conclusion, with either dietary lysine level used, maintaining methionine at 27.5% of lysine was required to maximize growth from d 0 to 21 postweaning. 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 Pigs en_US
dc.subject Growth en_US
dc.subject Methionine en_US
dc.subject Sulfur amino acids en_US
dc.subject Lysine en_US
dc.title Appropriate methionine:lysine ratio for the segregated early-weaned pig en_US
dc.type Conference paper en_US 1994 en_US
dc.citation.epage 48 en_US
dc.citation.spage 45 en_US
dc.description.conference Swine Day, Manhattan, KS, November 17, 1994 en_US
dc.contributor.authoreid goodband en_US
dc.contributor.authoreid jnelssen en_US
dc.contributor.authoreid mtokach en_US
dc.contributor.authoreid dritz en_US

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