PSPS Genetic Sperm Defects in a Jersey ( Bos taurus ) X Zebu ( Bos indicus ) Crossbred Bull

hereditary nature of the defect has been well documented

same environment and management conditions produced

(Hancock and Rollinson, 1949;Alun-Jones, 1962; Chemes

ejaculates of good quality and were successfully used for

and Rawe, 2003).

frozen semen production. Therefore, the abnormal sperm

Occurrence of microcephalic and macrocephalic sperm

phenotype and pattern of its occurrence in the Jersey X

along with normal spermatozoa in spermiogram of bulls

Zebu crossbred bull was suggestive of genetic sperm

has been reported (Revay et al., 2010; Morrell et al.,

defects and advice was given to eliminate the bull from

2014). In the present study, the microcephalic heads were

the semen collection programme.

seen in various sizes and shapes. Elongated and rounded

microcephalic heads were more frequent in appearance

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Journal of Animal Research: v.5 n.2. June 2015

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