J. Anim Sci.
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J. Anim Sci. 1966. 25:729-733.
© 1966 American Society of Animal Science
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Effect of Protein and Energy Intake on Reproductive Performance in Swine1

L. T. Frobish, V. C. Speer and V. W. Hays

Iowa Agricultural and Home Economics Experiment Station,2 Ames

Abstract

Three trials were conducted to study the effects of protein and energy intake during gestation on the reproductive performance of sows. As long as the sows remained on experiment, they were fed the same experimental diet through three successive reproductive cycles.

No significant differences in number of pigs farrowed alive, birth weight of live pigs, or pig gain from birth to weaning were observed between the sows fed 182 or 364 gm. of protein per day during gestation. More (P< .05) pigs were weaned from the sows on the high-protein intake than from sows on the low-protein intake.

Sows fed a high-energy diet (10,800 metabolizable kcal. per sow daily) during gestation gained more from the start of the experiment to weaning than did sows on a low-energy diet (5,400 metabolizable kcal. per sow daily). No significant effects due to energy intake were observed in the number of live pigs farrowed, birth weight of live pigs, number of pigs weaned or the pig gain from birth to weaning.

Footnotes

1 Journal Paper No. J-5185 of the Iowa Agricultural and Home Economics Experiment Station, Ames, Iowa. Project No. 1311

2 Department of Animal Science.






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Copyright © 1966 by the American Society of Animal Science.