J. Anim Sci.
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J. Anim Sci. 1983. 57:535-541.
© 1983 American Society of Animal Science
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Supplemental Feeding of Spring-Calving Cows on Tall Fescue or Tall Fescue-Red Clover Pastures1

J. L. Ellis2, R. E. Morrow3, G. B. Garner4, J. A. Stricker5 and M. R. Ellersieck6

University of Missouri, Columbia 65211

Abstract

A 3-yr experiment involving spring-calving commercial Hereford cows was conducted November 1976 through November 1979. Tall fescue pastures fertilized with 112 kg of N/ha each year (FN) and tall fescue overseeded with red clover (FC) were the pasture treatments used year round. Treatments of no supplement, .91 kg of grain/d or 1.36 kg of legume hay were imposed from calving in late February and March until the cows were moved to summer pastures about the middle of April. Pregnancy rates were influenced by the supplement treatments (P<.05). Pregnancy rates were 95, 88 and 79% for the grain, legume hay and no supplement treatments, respectively. Condition scores as estimated by weight:height ratios appeared to be related to pregnancy rates, with nonpregnant cows being in poorer condition throughout the study (P<.01) than the pregnant cows, indicating the thinner cows did not become pregnant. Pasture treatment differences for cows were noted during the winter season before calving and after the end of the breeding season during the summer. Cows on the FN forage gained more (P<.05) weight during the precalving phase, while the FC cows gained more (P<.01) than the FN cows during late summer. Pasture treatment differences (P<.01) for calves were shown for unadjusted calf summer average daily gains, actual weaning weights and adjusted 205-d weights.

Footnotes

1 Approved by the Director as a contribution from the Missouri Agr. Exp. Sta., Journal Series No. 9120.

2 Manager, Anim. Sci., Wurdack Farm.

3 Dept. of Anim. Sci.

4 Dept. of Biochem.

5 Present address: P.O. Box 50, Bartow, FL 33830.

6 Office of Agr. Exp. Sta. Statistician.






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Copyright © 1983 by the American Society of Animal Science.