Fine structural abnormalities of spermatozoa from a subfertile bull: a case report.
Spermatozoa from a nine-year-old subfertile Holstein bull were evaluated by light and electron microscopy. Morphological abnormalities observed included cytoplasmic droplet-like structures, constriction of the midpiece, missing axial filaments and abnormal spermatozoal head shapes.
Lorton
S P
SP
American Breeders Service Division, W. R. Grace & Co., DeForest, WI 53532, USA.
Wu
A S
AS
Pace
M M
MM
Parker
W G
WG
Sullivan
J J
JJ