Investigation On Seminal Attributes And Fertility Of Black Bengal Goat

Abstract

A total of 120 ejaculates from six adult Black Bengal bucks were studied to determine the semen attributes and evaluate their fertility. The various semen attributes of fresh semen were volume, sperm concentration, mass motility, live spermatozoa and normal spermatozoa percentage. All the semen attributes differed significantly (P<0.05) except normal spermatozoa percentage between the bucks. A total of 129 goats were inseminated with diluted semen to assess the fertility rate of Black Bengal buck. The mean values for the various semen attributes were: volume 0.58 ± 0.03 ml; sperm concentration 2797.22 ± 18.73 × 106/ml; mass motility 77.82 ± 0.61%; live spermatozoa 86.72 ± 0.54% and normal spermatozoa 91.39 ± 0.24%, respectively in fresh semen. With regard to the diluted semen, individual bucks showed significant difference (P<0.05) on motility, live and normal spermatozoa percentages. The diluted semen motility varied from 68.64 ± 1.66 to 74.55 ± 1.06%. On the other hand, the live and normal spermatozoa percentages of the diluted semen varied from 83.73 ± 0.94 to 89.27 ± 1.40% and 88.73 ± 0.54 to 91.91 ± 0.78%, respectively. From the insemination trial, the average kidding rate obtained was 58.9% in Black Bengal goat. It is suggested that selection of good quality buck semen could improve the overall fertility of Black Bengal goat. DOI: http://dx.doi.org/10.3329/bjas.v37i2.9877 BJAS 2008; 37(2): 17-24