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Journal of Dairy Science Vol. 54 No. 4 493-496
© 1971 by American Dairy Science Association ®
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Frequent Feeding of a Corn Silage-Urea-Concentrate Blended Ration to Lactating Dairy Cows1

F. A. Martz, L. R. Williams, J. R. Campbell, J. D. Sikes and E. S. Hilderbrand

Department of Dairy Husbandry, University of Missouri, Columbia 65201

ABSTRACT

A 120-day continuous study was conducted to determine effects of frequency of feeding a blended corn silage-concentrate ration containing a pelleted urea-alfalfa combination on 20 lactating Holstein cows. Cows were randomly assigned to two treatment groups of 10 each and fed individually in a tie-stall barn. One group was fed twice and the other four times daily. Average daily fat-corrected milk production, milk fat, solids-not-fat, milk protein, body weight, and dry matter intake by treatments were: twice daily feeding) 18.71 kg, 3.60%, 10.07%, 3.52%, 608.0 kg, and 16.0; and four times) 17.46 kg, 3.51%, 9.82%, 3.44%, 621.2 kg, and 14.49 kg. Analysis of covariance with data of the previous week as the covariate indicated no significant differences (P > .05) for daily fat-corrected milk production, milk composition, body weight, and ration intake. No significant differences (P > .05) were found in blood urea nitrogen, blood ammonia, urinary urea nitrogen, urine volume, urinary nitrogen, creatinine, and urinary amino acids. These results indicate that feeding four times daily had no additional benefit over twice daily feeding of a blended corn silage-concentrate ration containing a pelleted urea-alfalfa supplement.

FOOTNOTES

1 This study was supported in part by funds donated by Farmland Industries, Kansas City, Missouri.






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Copyright © 1971 by the American Dairy Science Association ®.