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Journal of Dairy Science Vol. 35 No. 9 755-763
© 1952 by American Dairy Science Association ®
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Feeding Value of Different Grades of Alfalfa Hay for Growing Dairy Heifers1

C. H. Gordon, J. R. Dawson2 and L. A. Moore

Bureau of Dairy Industry, Agricultural Research, Administration

W. H. Hosterman

Production and Marketing Administration, U. S. D. A.

ABSTRACT

Several lots of alfalfa hay were graded according to published standards and fed as the sole ration to Holstein heifers, during two group feeding trials.

During the 1949–50 feeding trial the heifers fed U. S. no. 2 hay consumed an average of 9.8 per cent more dry matter, gained 24.1 per cent more body weight and consumed 12.6 per cent less dry matter per pound of body weight gained, than the heifers fed U. S. no. 3 hay. Analysis of variance showed that the difference in dry matter consumed approached significance at the 5 per cent level and the difference in body weight gained was significant.

During the 1950–51 feeding trial the heifers fed U. S. no. 1 hay consumed an average of 17.9 per cent more dry matter, gained 31.3 per cent more body weight and consumed 10.7 per cent less dry matter per pound of body weight gained, than the heifers fed U. S. no. 3 hay. Analysis of variance showed that the difference in dry matter consumption and the difference in body weight gain was highly significant.

Holstein heifers will make adequate gains on good quality alfalfa hay alone if fed all they will eat.

FOOTNOTES

1 This work was done with funds provided by the Agricultural Research and Marketing Act of 1946.

2 Transferred to Office of Foreign Agricultural Relations, U. S. Department of Agriculture, May 8, 1951.






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Copyright © 1952 by the American Dairy Science Association ®.