Elsevier

Journal of Dairy Science

Volume 51, Issue 10, October 1968, Pages 1703-1705
Journal of Dairy Science

Research-Article
Maturation Changes in Bull Epididymal Spermatozoa

https://doi.org/10.3168/jds.S0022-0302(68)87257-1Get rights and content
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Abstract

Spermatozoa recovered from the caput epididymides of four bulls were immotile, whereas sperm from the cauda epididymides averaged 41% progressive motility. The percentage of unstained or morphologically normal spermatozoa did not differ between the caput and cauda epididymides. When caudal sperm were used to inseminate 100 cows, 69% did not return for reinsemination in 60 to 90 days.

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