COMPARATIVE STUDY ON PRODUCTIVE AND REPRODUCTIVE TRAITS OF BLACK BENGAL AND JAMNAPARI GOATS UNDER SEMI-INTENSIVE CONDITION

Abstract

The study was conducted to compare the productive and reproductive performances of Black Bengal and Jamnapari goat in semi-intensive system in Bangladesh. Average birth weight of kids of Black Bengal and Jamnapari was 956.13±19.72 gms and 1776.56±75.13 gms, respectively. In case of single litter the birth weight of Black Bengal and Jamnapari kids was 962.5±130.14 and 1773.33±388.62 gms, where as in twin it was 967.17±139.68 and 1816.67±486.11 gms and in case of triplet it was 929.55±90.7 and 1500 gms, respectively. A negative correlation was found between the litter size and the birth weight of kids. It was observed that in case of does the average body weight was 14.65±2.84 kg and 30.4±9.08 kg in case of Black Bengal and Jamnapari goat respectively. In case of Black Bengal and Jamnapari goat the service per conception was 1.45±0.5 and 1.34±0.48, respectively. The average gestation period was 147.9±1.6 and 150.88±4.7 days, post partum heat period was 36±7.9 and 63.25±24.32 days, kidding interval was 186.15±7.9 and 199.22±13.61 days, age at puberty was 197.35±13.59 and 328.44±61.65 days for Black Bengal and Jamnapari goat, respectively. The results indicated that the productive and reproductive performances were better in Black Bengal goat than the Jamnapari goat, under semi-intensive condition