J. Anim Sci.
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J. Anim Sci. 1957. 16:158-164.
© 1957 American Society of Animal Science
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Effect of Corn Silage on the Growth, Reproductive Development and Semen Production of Young Dairy Bulls1

R. J. Flipse

Pennsylvania Agricultural Experiment Station2

Abstract

Four sets of identical twin bull calves were used in a trial comparing an experimental ration of corn silage and hay with a control ration of concentrate and hay. The twins were fed from 13 to 112 weeks of age inclusive. TDN consumption was maintained at the level recommended by the National Research Council. Digestible protein intake was lower for the bulls fed silage than for those fed concentrate.

Growth, attainment of sexual maturity, and quantity and quality of semen produced were similar in the two groups. Blood urea and non-protein nitrogen tended to be lower in the silage-fed group than in the control group, possibly as a result of the lower protein intake on the silage ration.

Footnotes

1 Contribution from the Department of Dairy Science, Paper No. 2071 in the Journal Series of the Pennsylvania Agricultural Experiment Station.

2 University Park.






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Copyright © 1957 by the American Society of Animal Science.