J. Anim Sci.
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J. Anim Sci. 1985. 60:145-153.
© 1985 American Society of Animal Science
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Supplemental Biotin for Swine. II. Influence of Supplementation to Corn- and Wheat-Based Diets on Reproductive Performance and Various Biochemical Criteria of Sows during Four Parities1

K. L. Bryant2, E. T. Kornegay3, J. W. Knight3, K. E. Webb, Jr.3 and D. R. Notter3

Virginia Polytechnic Institute and State University, Blacksburg 24061

Abstract

Data from 116 females previously fed a corn-soybean basal diet with 0 or 220 µg supplemental biotin/kg during growth and development were used to study the influence of 0 (NB) or 440 (SB) µg of supplemental biotin/kg to corn-(C) or wheat- (W) based diets for gilts and sows housed in total confinement. Reproductive performance through four parities (total of 245 litters) and various sow and pig biochemical criteria were evaluated. Females fed W diets were older (P<.07) at first estrus, farrowed litters that were lighter weight (P<.01) at birth and that contained fewer (P<.05) total and live pigs compared with females fed C diets. Biotin supplementation did not significantly influence (P>.10) farrowing and lactation performance; however, after the first parity, total and live pigs/litter at farrowing tended to be larger for SB females. Conception rate at first estrus postpartum was increased (P<.07) by 9% and the average weaning to estrus interval was reduced (P<.05) from 14.5 to 10.2 d with SB. Biotin supplementation increased (P<.001) the biotin content of sow plasma, milk and liver, while sow liver pyruvate carboxylase activity was not altered (P>.10). Pigs farrowed by SB females had three- and fivefold higher (P<.001) levels of plasma biotin at birth and 14 d of age, respectively; however, liver biotin levels at birth were not different (P>.10) for pigs from NB and SB females. The response to biotin supplementation was similar for C-and W-based diets. The improvements in conception rate and weaning to first estrus and the trend for larger litters after the first parity suggest that biotin supplementation of diets for gilts and sows housed in total confinement may contribute to an improvement in reproductive performance.

Footnotes

1 Appreciation is expressed to Mrs. Helen Bartlett for data analysis and biotin assays; to Mrs. Susan Arthur-Fennell for data analysis; to Dr. R. F. Kelly and Leon Linkous for slaughtering the sows; to Mrs. Cindy Hixon for typing the manuscript; to Hoffmann-La Roche, Inc., Nutley, NJ for supplying biotin and for partial financial support; to Borden Chemical Co., Norfolk, VA, Agricultural Processing Corp., Salem, VA, and Calcium Carbonate Co., Quincy, IL for ingredients.

2 Present address: Carl S. Akey, Box 128, Lewisburg, OH 45338.

3 Dept. of Anim. Sci.






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Copyright © 1985 by the American Society of Animal Science.