The researchers studied Black Bengal goats in different areas of West Bengal to understand their reproduction traits. They looked at factors like age at first service, kidding intervals, and litter size. They found that the environment, season, and the doe's age and previous pregnancies all affected how well the goats reproduced. The goats in Murshidabad and Jhargram did better than those in other areas. The researchers also found that genetic factors played a small role in these traits, suggesting that improving management practices could help increase the goats' reproductive success.