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Journal of Dairy Science Vol. 51 No. 10 1703-1705
© 1968 by American Dairy Science Association ®
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Maturation Changes in Bull Epididymal Spermatozoa

Gaius Igboeli and R. H. Foote

Department of Animal Science, Cornell University, Ithaca, New York

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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Copyright © 1968 by the American Dairy Science Association ®.