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| Genetic and Phenotypic Parameters of Milk Production Traits of Crossbred Cattle in a Selected Farm of Bangladesh |
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Ali Reza Ahmed ,
Sarder Safiqul Islam ,
Nargis Khanam and Ayesha Ashraf |
Abstract:
The study was conducted in Milk and Cattle
Improvement Farm, Bogra, Bangladesh
from 1995 to 2003 with a view to estimate genetic and phenotypic parameters of
milk production traits of crossbred cattle. The milk production traits
considered in the study were lactation length, yield per lactation, pick yield
per day and daily milk yield. Heritability was calculated from parental
half-sib relationship. The average mean of lactation length, yield per
lactation, pick yield per day and daily milk yield were 338.19 ± 9.98 days,
1336.88 ± 60.23, 6.02 ± 0.17 and 3.93 ± 0.12 kg, respectively. The heritability
estimates of lactation length, yield per lactation, pick yield per day and
daily milk yield were 0.028 ± 0.01, 0.44 ± 0.10, 0.24 ± 0.08 and 0.20 ± 0.07,
respectively, where the repeatability estimates of those traits were 0.10 ± 0.09,
0.14 ± 0.09, 0.36 ± 0.10 and 0.35 ± 0.10, respectively. The effects of genetic groups
on various traits were non-significant except lactation length (P<0.01). The
effects of parity on all traits under consideration were non-significant.
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How to cite this article:
Ali Reza Ahmed , Sarder Safiqul Islam , Nargis Khanam and Ayesha Ashraf , 2004. Genetic and Phenotypic Parameters of Milk Production Traits of Crossbred Cattle in a Selected Farm of Bangladesh. Journal of Biological Sciences, 4: 452-455.
DOI: 10.3923/jbs.2004.452.455
URL: https://scialert.net/abstract/?doi=jbs.2004.452.455
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