Vol. 9, Issue 6 (2020)

Author(s):
Goswami MK, Sinha S, Deka BC, Biswas RK and Dutta A

Abstract:
A total of 126 ejaculates, 21 from each of six bucks comprising three Beetal and three Sirohi bucks, collected by artificial vagina were used to study various semen characteristics. The semen characteristics viz., ejaculate volume, mass activity, initial sperm motility, live sperm, sperm concentration, sperm number per ejaculate, cold shock resistance index, live intact acrosome and sperm abnormalities were studied by conventional methods. The overall mean values of different characteristics of fresh semen in Beetal and Sirohi bucks for ejaculate volume, mass activity, initial sperm motility, live sperm, sperm concentration, sperm number per ejaculate, cold shock resistance index, live intact acrosome, head abnormalities, mid piece abnormalities, tail abnormalities and sperm with proximal and distal cytoplasmic droplet were 1.08 ± 0.05 and 1.18 ± 0.04 ml, 3.71+ and 3.92+, 82.94 ± 0.73 and 84.60 ± 0.61 per cent, 85.57 ± 0.52 and 86.03 ± 0.48 per cent, 3356.73 ± 83.06 and 3176.94 ± 53.92 million per ml, 3595.17 ± 122.08 and 3669.00 ± 126.42 million, 6.72 ± 0.22 and 6.77 ± 0.20 per cent, 85.18 ± 0.39 and 84.05 ± 0.41 per cent, 1.65 ± 0.13 and 1.50 ± 0.12 per cent, 0.25 ± 0.02 and 0.30 ± 0.03 per cent, 2.73 ± 0.18 and 2.53 ± 0.13 per cent, 0.43 ± 0.03 and 0.48 ± 0.04 per cent and 0.86 ± 0.12 and 0.61 ± 0.04 per cent respectively. The different semen characteristics did not differ significantly between breeds; however, the differences between bucks within the breed were significant for ejaculate volume, live intact acrosome, mid piece abnormalities, tail abnormalities and sperm with distal cytoplasmic droplet.