Abstract:
The Black Bengal goat is one of the potential genetic resources in our country. This present
study was compiled to investigate the reproductive performance of Black Bengal goat in
village condition at Saver Upazilla under the Dhaka district from July/2017 to June/2018. All
goats of this study was rearing under extensive conditions. Least-squares means for body
weight at birth for 1
st
, 2
nd
and 3
rd
parity were 0.92±0.01, 0.99±0.01 and 0.97±0.01 kg
respectively. Parity of dam at birth weight of Black Bengal goat has significant effect
(p<0.05). The body weight at birth of Black Bengal goat for winter, summer and rainy season
were 0.92±0.01, 0.99±0.1 and 0.97±0.01 kg respectively. Season of birth has significant
(p<0.05) effect on the birth weight. Non-significant effect of parity of dam on body weight at
weaning age of Black Bengal goat. The body weight of Black Bengal goat at weaning period
were 5.12±0.06, 5.03±0.05 and 4.97±0.06 kg respectively at 1
ii
st
, 2
nd
and 3
rd
parity. The body
weight at weaning were 4.89±0.05, 5.27±0.05 and 4.93±0.09 kg respectively at winter,
summer and rainy season. There are significant (p<0.05) effect of season on body weight at
weaning of black Bengal goat. Parity of dam has highly significant (p<0.01) effect on litter
size at birth of Black Bengal goat. The litter size of Black Bengal goat at birth were
1.21±0.06, 2.07±0.08 and 2.43±0.12 respectively at 1
st
, 2
nd
and 3
rd
parity. The litter size of
Black Bengal goat at birth were 1.83±0.09, 1.80±0.09 and 1.75±0.14 respectively at winter,
summer and rainy season. Although there is significant effect of parity on litter size but there
is no significant effect of season on litter size at birth. Highly significant effect (p<0.01) of
parity on litter size at weaning of Black Bengal goat. The litter size at weaning were
1.18±0.05, 1.56±0.06 and 1.91±0.12 respectively at 1
st
, 2
nd
and 3
rd
parity. Season at birth of
Black Bengal goat has significant (p<0.05) effect on litter size at weaning. The litter size at
weaning were 1.60±0.08, 1.40±0.07 and 1.30±0.08 respectively at winter, summer and rainy
season. Non-significant effect of parity of dam and season of birth on gestation period of
Black Bengal goat. The gestation period of black Bengal goat at 1
st
, 2
nd
and 3
parity were
144.1±0.43. 143.5±0.40 and 144.1±0.48 days respectively and at winter, summer and rainy
season were 143.9±0.37, 143.9±0.41 and 143.6±0.59 days respectively. It is concluded that
third parity and summer season was better performance under extensive rearing system in
village condition.
