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Effects of castration age and diethylstilbestrol on weight gains in male calves

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Authors

S. W. Thurber, University of California
J. R. Dunbar
D. P. Smith

Publication Information

California Agriculture 20(10):12-14.

Published October 01, 1966

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Abstract

Age at castration appears to influence growth rate of male cattle. The higher pre-weaning weight gains of bulls suggest that the male hormone is an influencing growth factor. However, post-weaning weight gains are lower in bulls castrated at eight months, which tends to nullify their pre-weaning advantage. Stress caused by the operation may have been a factor in this response. Differences in weight gains associated with diethylstilbestrol treatment were obtained whenever used in these tests. This is a progress report of experimental use of diethylstilbestrol in tests with early and late castrates to improve weight gains—a practice not presently recommended by the University of California.

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Effects of castration age and diethylstilbestrol on weight gains in male calves

S. W. Thurber, J. R. Dunbar, D. P. Smith
Webmaster Email: bjnoel@ucanr.edu

Effects of castration age and diethylstilbestrol on weight gains in male calves

Share using any of the popular social networks Share by sending an email Print article
Share using any of the popular social networks Share by sending an email Print article

Authors

S. W. Thurber, University of California
J. R. Dunbar
D. P. Smith

Publication Information

California Agriculture 20(10):12-14.

Published October 01, 1966

PDF  |  Citation  |  Permissions

Author Affiliations show

Abstract

Age at castration appears to influence growth rate of male cattle. The higher pre-weaning weight gains of bulls suggest that the male hormone is an influencing growth factor. However, post-weaning weight gains are lower in bulls castrated at eight months, which tends to nullify their pre-weaning advantage. Stress caused by the operation may have been a factor in this response. Differences in weight gains associated with diethylstilbestrol treatment were obtained whenever used in these tests. This is a progress report of experimental use of diethylstilbestrol in tests with early and late castrates to improve weight gains—a practice not presently recommended by the University of California.

Full text

Full text is available in PDF.

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