Testicular Function in Bulls 10 Weeks after Unilateral Vasectomy

1 January 1974

journal article
Published by Oxford University Press (OUP) in Journal of Animal Science

Vol. 38 (1) , 117-120
https://doi.org/10.2527/jas1974.381117x

Abstract

Five mature dairy bulls were killed 10 weeks after unilateral vasectomy. Testes on the vasectomized side weighed 67% of the contralateral controls (P<.01) and contained only 34% as many spermatids as the control testes (P<.01). Since a previous report showed little or no change in spermatogenesis in younger bulls at 23 weeks after vasectomy, possibly vasectomy temporarily interrupts spermatogenesis in bulls. In the caput-corpus epididymidis and in the cauda epididymidis on the occluded side, sperm numbers were 20% (P<.01) and 49% (P<.01) of those in the control side. Copyright © 1974. American Society of Animal Science. Copyright 1974 by American Society of Animal Science.

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