Estimation of genetic parameters for growth traits in Brahman crossbred cattle of Bangladesh
Md Rafikul Islam
Technology Management and Economics
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The present study was conducted to estimate the genetic parameters (heritability and genetic correlation) and breeding value of Brahman crossbred cattle (50%) of Bangladesh. Data on 5662 Brahman graded
calves (50%) were collected from the records maintained by Department of Livestock Services from the
eight areas of the country. Basic statistical analyses were performed by using Statistical Analysis System
(SAS) version 9.1.3. Heritability and genetic correlations were estimated with Variance Component
Estimation (VCE) 5.1.2 software and finally breeding values were measured with PEST software.
Heritability (h2) estimates were 0.87, 0.59, 0.33, 0.33, 0.34, 0.34, 0.35 for birth weight (BW), Weight
at 1-, 3-, 6-, 9-, 12- and 24-month (kg), respectively. Estimates of h2 for ADG from BW to 3-month (g),
ADG from 3- to 6-month (g), ADG from 6- to 9-month (g), and ADG from 9- to 12-month (g) were
found to be 0.53, 0.71, 0.69 and 0.68, respectively. Genetic correlations between growth