Reproductive Performance and Repeatability Estimation of Some Traits of Crossbred Cows in Savar Dairy Farm

  • MS Islam Department of Animal Breeding and Genetics, Bangladesh Agricultural University, Mymensingh
  • A Akhtar Department of Animal Breeding and Genetics, Bangladesh Agricultural University, Mymensingh
  • MA Hossain Department of Animal Science, Bangladesh Agricultural University, Mymensingh
  • MF Rahman Department of Animal Science, Bangladesh Agricultural University, Mymensingh
  • SS Hossain Department of Animal Breeding and Genetics, Bangladesh Agricultural University, Mymensingh
Keywords: Calving interval, Crossbred dairy cows, Lifetime reproductive traits, Performance, Repeatability

Abstract

The study was conducted on 244 crossbred cows of CCBS Savar, Dhaka to evaluate the effect of different genetic groups on their lifetime performance of various reproductive traits using twenty years data. Data were accumulated from a prescribed data sheet maintained by Central Cattle Breeding Station, Dhaka. Genetic groups for this experiment were (LF), (LJ), (LH x F), (LF x LF) and (LJ x LJ). The studied parameters were age at puberty, service per conception, post-partum heat period, calving interval, total number of calving in lifetime. ANOVA showed that genetic groups had a significant effect on age at puberty, post-partum heat period, total number of calving in lifetime and calving interval (P<0.05). From result it was found that earliest age at puberty were in L x F (749.27±99.01), service per conception, postpartum heat period was lower in L x F (1.60±0.19 and (145.75±94.44 days respectively). Calving interval was lower in L x J (411.18±136.87 days) and almost similar results were obtained for L x F (432.26±96.26 days). Total number of calving in lifetime were observed higher in (LH x F) with mean of 1468.30±198.58 days.

J. Environ. Sci. & Natural Resources, 10(2): 87-94 2017

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Abstract
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Published
2018-11-29
How to Cite
Islam, M., Akhtar, A., Hossain, M., Rahman, M., & Hossain, S. (2018). Reproductive Performance and Repeatability Estimation of Some Traits of Crossbred Cows in Savar Dairy Farm. Journal of Environmental Science and Natural Resources, 10(2), 87-94. https://doi.org/10.3329/jesnr.v10i2.39017
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Articles