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Journal of Dairy Science Vol. 37 No. 3 259-268
© 1954 by American Dairy Science Association ®
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Antibiotics in Dairy Cattle Nutrition. III. Effects of Different Levels of Aureomycin Intake upon the Growth and Well-Being of Dairy Calves, and the Association of Differences with Changes in Environment1

E. E. Bartley, F. W. Atkeson, H. C. Fryer and F. C. Fountaine

Department of Dairy Husbandry and Statistical Laboratory, Kansas Agricultural Experiment Station, Manhattan

ABSTRACT

Between November 1950 and May 1952 several workers (1) reported that the feeding of aureomycin to young calves exerts a favorable influence on their growth and well-being. Later reports also have indicated that aureomycin feeding favorably influences calf growth (2, 5, 6, 8, 9, 11, 12, 13, 14, 16, 18) and reduces the incidence of scours (12).

In an earlier experiment conducted at the Kansas Station (1) the calves were raised in a barn used for this purpose for 18 years and in which the incidence of scours and colds and associated death losses had been considered extremely high. Under these unfavorable conditions, aureomycin feeding to 12 weeks of age resulted in a 43% gain in weight and markedly reduced the incidence of scours and colds. The experiment reported herein was initiated to determine what beneficial effect, if any, aureomycin would have on calves raised under more favorable conditions. Also, in order to obtain more information oh the importance of the amount of aureomycin fed, two levels were compared in this study.

FOOTNOTES

1 Supported in part by a grant from Lederle Laboratories Div., American Cyanamid Co., Pearl River, N. Y. Contribution No. 222, Department of Dairy Husbandry, and No. 11, Statistical Laboratory.






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Copyright © 1954 by the American Dairy Science Association ®.