Authors : Md. Kabirul Islam Khan and Romana Khandaker
Abstract: The study was conducted to know the productive and reproductive traits of goats, estimates their genetic association and selection of the superior does. Data was collected from 170 goats of Jamunapari, Black Bengal and their cross (Jamunapari×Black Bengal) from the rural and Metro Politian areas of Bangladesh. The Economic Values (EVs) of different traits and profitability per doe per year were estimated using a linear model and Breeding Values (BVs) by animal model. Selection index was constructed as the sum of the product of BVs with the EVs of each trait. Jamunapari goat produced higher daily milk yield (0.65-0.68 kg) than Black Bengal and crossbred. Birth weight (1.68-1.86 kg) and liveweight (32-35 kg) of Jamunapari does were higher than other breeds but the litter size (2) and kidding interval (158-168 days) of Black Bengal goats were better. Heritability, genotypic and phenotypic correlations of all traits were positive for all breeds except liveweight and kidding interval was negative. The profitability of Black Bengal goats was higher than other breeds due to its regularity of kidding and larger litter size. Finally, according to the selection index the highest ranking does were selected as parents for the production of offspring.
Md. Kabirul Islam Khan and Romana Khandaker, 2017. Selection of Does Using Economic Merit Index for Further Genetic Improvement. Journal of Animal and Veterinary Advances, 16: 58-66.