Advances in Animal and Veterinary Sciences

Research Article
Adv. Anim. Vet. Sci. 2 (11): 632 - 637
http://dx.doi.org/10.14737/journal.aavs/2014/2.11.632.637
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Mukesh Bhakat1, Tushar Kumar Mohanty2, Ashok Kumar Gupta1, Muzamil Abdullah1
1Artificial Breeding Research Centre, National Dairy Research Institute, Karnal – 132001, Haryana, India; 2Livestock Research Centre, Livestock Production Management, National Dairy Research Institute, Karnal – 132001, Haryana, India.

*Correspondence | Mukesh Bhakat, National Dairy Research Institute, Karnal, Haryana, India; Email: bhakat.mukesh@gmail.com

Abstract
One hundred and fifty six ejaculates from eight Karan Fries (KF) bull were collected to study the effect of season (summer, rainy and winter) on semen quality parameters at Artificial Breeding Research Centre, NDRI, Karnal, India. The data was analysed using least square analysis. Season had no significant effect on ejaculate volume, mass activity, total sperm output and pH of the semen, whereas it had significant (P<0.05) effect on initial motility, non-eosinophilic count and acrosome integrity of sperms as well as highly significant (P<0.01) effect on HOST, sperm concentration, sperm abnormalities and osmolality of semen in KF bulls. The results clearly indicate that during summer season, the highest values of sperm abnormalities, pH and OSMOL and lowest values of IM, SPC, SPCE, LIVE, HOST and AI was observed. During winter season highest magnitude of MA, IM, SPC, SPCE, LIVE, HOST and AI and lowest value of VOL, sperm abnormalities, pH and OSMOL were observed in KF bulls. It was concluded that the semen qualities were optimal during winter, poor during summer and intermediate during rainy season.

Keywords | Season, Summer, Rainy, Winter, Semen quality, Karan Fries Bull, NDRI