Influence of Non-Genetic Factors on Semen Quality Parameters in Crossbred Jersey (Bos taurus x Bos indicus) Bulls
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Date
2018
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Abstract
Data on 106197 semen ejaculates of 310 crossbred Jersey bulls maintained at three frozen
semen stations in Tamil Nadu, India were collected from the year 2002 to 2014. The
effects of various non-genetic factors such as farm, ejaculate number, period of semen
collection, season of semen collection and age of the bulls at collection were studied on
semen quality parameters using least-squares method. The overall least-squares means for
semen volume, sperm concentration, mass activity, initial sperm motility, post-thaw
motility and number of doses per ejaculate were 4.03 ml, 1056.18 million per ml, 2.31,
67.08 per cent, 51.04 per cent and 172.58 doses, respectively. The effects of farm,
ejaculate, period and age of the bulls were significant (P<0.05) on all semen quality
parameters. Season had significant (P<0.05) effect on sperm concentration, mass activity
and initial sperm motility. The farm x season and age x ejaculate interaction effects were
found to have significant (P<0.05) effect on all semen quality parameters.
Description
TNV_IJCMAS_2018_7(4)2994-3004
Keywords
Veterinary Science