Effect of Season on Semen Quality of Crossbred (Karan Fries) Bulls

Abstract

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