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Asian-Australas J Anim Sci > Volume 12(2); 1999 > Article
Animal Breeding and Genetics
Asian-Australasian Journal of Animal Sciences 1999;12(2): 161-164.
DOI: https://doi.org/10.5713/ajas.1999.161    Published online March 1, 1999.
Dairy Potential of Pabna Cows and Crossbreds with Sahiwal and Friesian and Within- and Between-Breed Sire Effects
M. A Hoque, M. R Amin, M. S Hussen
Dairy performances of Pabna cows and its crossbreds with Sahiwal (SL) and Friesian (F) in the Baghabarighat dairying area of Bangladesh were evaluated. Four SL and F sires were used for the crossbreeding. The exotic sire effect of individuals on their daughters were also evaluated in this study. It showed that the genetic group had a significant (p<0.05) effect on birth weight, age at first heat, calving interval (16.3 m) shortest lactation length (199 d) and lowest lactation yield (728 L) were found in Pabna cows. The highest birth weight (22.5 kg) , shortest age at first heat (25.5 m) and calving interval (13.7 m), longest lactation length (253 d) and highest lactation yield (1936 L) were found in the F crossbreds. Within the same breed, the effect of individual sire was significant (p<0.05) but F sires had a non-significant (p<0.05) effect on calving interval in their progeny. The fat % and SNF % in milk and number of services required for conception did not differ (p>0.05) among inter- and intra- breed sire groups.
Keywords: Birth Weight; First Heat; Service/Conception; Calving Internal; Length and Yield of Lactation; Milk Fat and SNF
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