Polymorphic Sperm Phenotype Suggesting Genetic Sperm Defects in a Jersey (Bos taurus) X Zebu (Bos indicus) Crossbred Bull
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Date
2015-06
Journal Title
Journal ISSN
Volume Title
Publisher
TANUVAS
Abstract
Data on semen collections from a Jersey X Zebu crossbred bull, consistently producing semen with high proportion of sperm
abnormalities was collected and the semen characteristics were analyzed. Observation of the records of 58 ejaculations from
the bull has revealed that 96.6% of the ejaculates were rejected for poor semen quality especially in sperm morphology. A
representative semen sample from the bull also showed sperm abnormalities up to 72.9%, of which 14.9% and 14.5% of the
spermatozoa exhibited loose heads and microcephalic heads respectively. Coiled tail (16.7%) and short tail (14.9%) were the
main tail defects observed. Since sperm defects were consistently appearing in high proportions in almost all the ejaculates the
genetic cause of the sperm defect was suspected.
Description
TNV_JAR_2015_5(2)289-292
Keywords
Veterinary Science