title: Growth performance of weanling pigs fed corn-soybean meal diets with or without dried whey at various L-lysine.HCl levels.
abstract: A total of 490 crossbred weanling pigs were used to evaluate the responses to and the subsequent interaction between dietary dried whey and crystalline L-lysine.HCl on postweanling growth and feed efficiency at two periods postweaning. The experiment was conducted as a 2 x 5 factorial arrangement of treatments in a randomized complete block design to evaluate two levels of edible-grade dried whey (0 or 25%) and five dietary lysine levels ranging from 1.10 to 1.50% in .10% increments using a corn-soybean meal mixture as the basal feedstuff. Pigs were allotted by weight, litter, and sex to seven replicates at weaning (23 +/- 2 d) and fed their treatment diets for a 35-d period. Daily gain and feed intake were greater (P less than .01) for both the 0- to 21- and the 22- to 35-d periods when dried whey was fed; the relative magnitude of the response to dried whey was greatest during the initial 21-d period. Growth responses during the 0- to 21-d period were, however, independent of dietary lysine level, suggesting that dietary lysine at a level of 1.10% is not the limiting nutrient in a corn-soybean meal diet or a corn-soybean meal diet with dried whey. From 22 to 35 d postweaning a linear growth response to lysine level occurred when the dried whey diet was fed, but no response was detected when lysine was added to the corn-soybean diet, resulting in a diet x lysine level interaction (P less than .10).(ABSTRACT TRUNCATED AT 250 WORDS)
authors.affiliation: Anim. Sci. Dept., Ohio State University, Columbus.
authors.forename: A J
authors.initials: AJ
authors.lastname: Lepine
authors.forename: D C
authors.initials: DC
authors.lastname: Mahan
authors.forename: Y K
authors.initials: YK
authors.lastname: Chung
mesh_terms: D000821:Animal Feed; D000818:Animals; D003611:Dairy Products; D004435:Eating; D005260:Female; D005527:Food, Fortified; D008239:Lysine / Q000008:administration & dosage*; D008297:Male; D013025:Glycine max; D013552:Swine / Q000254:growth & development*; D014886:Weaning; D015430:Weight Gain; D003313:Zea mays
chemical_list: D008239:Lysine