J. Anim Sci.
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J. Anim Sci. 1986. 62:155-162.
© 1986 American Society of Animal Science
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Effect of Biotin and(or) Lysine Additions to Corn-Soybean Meal Diets on the Performance and Nutrient Balance of Growing Pigs1

C. Ross Hamilton2 and Trygve L. Veum3

University of Missouri, Columbia 65211

Abstract

Supplementation of a basal corn-soybean meal diet with 0 or .2% L-lysine and 0, .25 or .55 ppm biotin produced six dietary treatments in a factorial arrangement. Pig performance, post-weaning scour scores, plasma urea N (PUN) levels, N and energy balance and liver pyruvate carboxylase activity (PC) were response criteria. Crossbred pigs were fed from weaning at 4 wk of age (8.0 kg) to market weight in performance trials utilizing 552 pigs in the 35-d starter period and 384 pigs in the subsequent grower (about 21 to 50 kg) and finisher (about 50 to 95 kg) periods. Pigs remained on their respective dietary treatments for the entire experiment. Energy and N balance trials were conducted utilizing 36 barrows from the grower period (avg 44.7 kg) and 36 barrows from the finisher period (avg 90.3 kg) of the performance study. Barrows were sacrificed following completion of the 6-d collection periods to measure liver PC activity. The basal starter diet contained 17.0% crude protein (CP), .86% lysine and .22 ppm biotin. Increasing the corn:soybean meal ratio reduced the dietary levels of CP, lysine and biotin to 14.8%, .69% and .19 ppm for the basal grower diet and to 11.1%, .50% and .17 ppm, respectively, for the basal finisher diet. Lysine supplementation improved (P<.05) average daily feed intake and average daily gain for all periods, gain:feed ratios for the starter and grower periods and reduced (P<.01) PUN levels at the end of the starter and finisher periods. Added lysine had no effect (P>.10) on N or energy balance for either period studied. No biotin effects (P>.10) were obtained for any parameter studied. Biotin present in the basal corn-soybean meal diets was adequate for pigs reared in environmentally modified buildings from weaning to market weight.

Footnotes

1 Contribution from the Missouri Agr. Exp. Station. Hoffman-La Roche Inc., Nutley, NJ are acknowledged for conducting the microbiological growth assays for dietary biotin content. Supported in part by the Natl. Inst. of Health Institutional Biomed. Res. Support Grant RR-07053.

2 Present address: Dept. of Anim. and Range Sci., South Dakota State Univ., Brookings.

3 For reprints: 110 Anim. Sci. Res. Center.






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Copyright © 1986 by the American Society of Animal Science.