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Journal of Dairy Science Vol. 43 No. 6 782-786
© 1960 by American Dairy Science Association ®
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Spermatogenesis in Relation to Spermatozoa Concentration in Bovine Semen

Perry T. Cupps and R. C. Laben

Department of Animal Husbandry, University of California, Davis

ABSTRACT

The correlation between the number of spermatids in standard sections of the seminiferous tubules and sperm concentration in 13 bulls whose sperm concentration ranged from 0.01 to 20.6 x 105 spermatozoa per microliter was .82. The frequency of the various stages of the cycle of the seminiferous epithelium did not change until sperm concentration dropped below 5.0 x 105 spermatozoa per microliter. Qualitative differences in the type of degeneration in the testes were found in bulls having a low sperm concentration.






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Copyright © 1960 by the American Dairy Science Association ®.