An experimental study was made for assessing the influence of parasitic infestation as well as variability of productive and reproductive performances of Black Bengal goat before recommendation of selection and breeding using an experimental design under farm condition and the productive and reproductive performances of sixty six progenies of the does were recorded. The average body weight in both first and second generation at nine months of age of T1 (10.12 kg and 10.23 kg) and T2 (10.01 kg and 10.36 kg) were significantly higher than T3 (9.68 kg and 9.79 kg). The average body weight at birth, three months and six months showed no variation among the groups. The result of physical characteristics of Black Bengal goat progenies showed that the overall heart girth of T1 (49.42 cm) and T2 (49.32 cm) were significantly higher than T3 (47.23 cm) at nine months of age. The result of heart girth at birth, three months and six months revealed no significant variation. Other physical characteristics i.e. body height and body length showed no significant difference between groups. No significant change was observed in any of the above traits between generations. The result of reproductive traits only for first generation progenies showed similar findings as that observed in field condition i.e. significant variation in WFK, SP and KI among the high and low EPG groups. It has been observed that the progenies of does having EPG count more than 1200 have no effect on body weight and physical characteristics only upto six months of age indicating the existence of maternal immunity upto six months. But give poor productive and reproductive performance at their adulthood. They also give birth to inferior progenies generation after generation and the progenies are also susceptible to infection.
Gastrointestinal Parasites, Black Bengal Goat, Productive and Reproductive Performances