Selection of Black Bengal Buck Based on Some Reproductive Performance of Their Progeny at Semi-Intensive Rearing System

Abstract

The objective of this study was to select Black Bengal Buck Based on some reproductive performance of their progeny. The least-squares means for overall reproductive performances of age of first kidding (AFK), weight at first kidding (WFK), gestation length (GL), kidding interval (KI), post-partum heat (PPT), litter size at birth (LS) and litter weight at birth were 465.6 days, 13.22 kg, 145.34 days, 302.5 days, 123.84 days, 1.61 and 1.66 kg, respectively. The effect of flock and generation were significant (p<0.05) for AFK, WFK, KI, PPT, LS and LWB. The effect of parity of doe was significant (p<0.01) for LSB and LWB. The effect of season was significant (p<0.05) for KI, PPT and LWB. The heritability value for these traits was ranges from 0.17 to 0.24 and predicted breeding value from -0.003 to 0.445. According to the genetic worth of the buck the highest breeding value of reproductive traits were found in the progeny of Buck No. 32, followed by Buck No. 52, 54, 81 and 87. This progeny tested bucks may be used for the improvement of the reproductive potentials of Black Bengal goat through Artificial Insemination (A.I). The lowest breeding value of reproductive traits was found from the progeny of Buck No. 3 followed by Buck No. 11. The low estimates of heritability obtained for reproductive traits indicated that selection based on the doe's own performance may result in slow genetic improvement therefore; the progeny testing program will be beneficial to the farmers and fulfill their need by supplying superior sires of high genetic merit.

Phenotypic performance and response to selection for reproductive traits of black bengal Goat (BBG) in a community breeding program

“…The finding of the present study also corroborates with earlier reports of 181.23±4.55 and 190.2±0.20 days, respectively as obtained by Faruque et al, (2010) and Hasan et al, (2014) for the same breed. On the other hand, Haque et al, (2013) reported 302.5±4.55 days KI for the same genotype, which looks much higher than our study. The variations of KI with wider ranges among investigators within same genotype could be due to difference of management practices, feeding, reproductive care, seasonality or insufficient breeding bucks.…”

“…Earlier, lower AFK of 283.83±31.16 and 360.5days, respectively were reported by Faruque et al, (2010) in an intensive system and Hassan et al, (2007) for the same breed. However, very higher estimates of AFK were reported by Hassan et al, (2010) (448-450 days) and Haque et al, (2013) (465.6±12.45 days) for the same genotype. Variations within same genotype could be due to variable environment, management and feeding provided by the farmers.…”

“…On the other hand, Faruque et al, (2010) reported PPHP for the same genotype to be 28.53 days, which was lower than this study. However, higher PPHP (60 and 123.84 days) were obtained by Devendra and Burns, (1983) and Haque et al, (2013) for the same breed. Apparently, generation, parity, better management and nutrition were reported to be the most contributing factors responsible for lowering the PPHP (Hossain et al, 2004).…”

Electrocardiographic reference values and configuration of electrocardiogram waves recorded in Black Bengal goats of different age groups

“…The Black Bengal goat is a breed of goat found throughout Bangladesh and other places of India such as West Bengal, Bihar, and Odisha. One of the most favorable attributes of the Black Bengal goat as a meat-producing animal is its high rate of reproduction and the fact that it has an extended breeding, especially as reproduction is a major contributing factor to the efficiency of meat production [ 5 ]. This breed can adapt to any environment easily and its immunity is very high.…”

Genetic Studies on Reproduction Performance of Raighar Goat in its Native Tract

“…The present finding corroborates with the earlier report of Das et al [15] in Bengal goats of West Bengal. But, higher estimates were reported by Haque et al [16] and Singh et al [17].…”