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A Comparative Study of Productive and Reproductive Performance and Estimates of Heritability for Economic Traits in Different Genetic Groups of Cattle Available at Baghabarighat Milk Pocket Area of Bangladesh

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Author(s): P.K. Das | S.Z. Ali | A.B.M.M. Islam | B.K. Roy

Journal: Journal of Biological Sciences
ISSN 1727-3048

Volume: 3;
Issue: 8;
Start page: 726;
Date: 2003;
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Keywords: Reproductive performance | crossbred | genetic groups

ABSTRACT
The study was conducted at Baghabarighat milk pocket area to observe the productive and reproductive performance of the crossbred of Sahiwal x Friesian, Sahiwal x Pabna, Friesian x Pabna and Pabna x Pabna during the period from 1990 to 1998. Comprising four genetic groups data of 41 Sahiwal x Friesian, 72 Sahiwal x Pabna, 55 Friesian x Pabna and 18 Pabna x Pabna were considered to evaluate birth weight of calves, age at puberty, gestation length, service per conception, post partum heat period, lactation length, and daily milk yield. Five Sahiwal and four Friesian sires were used for the crossbreeding. The exotic sire effect of individuals on their daughters were also evaluated in this study. Statistical analysis of the results showed that the genetic group had a significant effect on birth weight (P
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