Genetic and Phenotypic Parameters of First Lactation Traits in Sahiwal Cattle: A Review

  • Vilas B. Dongre Department of Animal Genetics & Breeding, College of Veterinary Science & Animal Husbandry, Junagadh Agricultural University, Junagadh (Gujarat)
  • R. S. Gandhi Assistant Director General (Animal Production and Breeding), ICAR, New Delhi
  • T. V. Raja College of Veterinary and Animal Sciences, Kerala Agricultural University, Pookot, Wayanad (Kerala)
  • Anshu R. Ahlawat Department of Animal Genetics & Breeding, College of Veterinary Science & Animal Husbandry, Junagadh Agricultural University, Junagadh (Gujarat)
  • G. S. Sonawane Department of Animal Genetics & Breeding, College of Veterinary Science & Animal Husbandry, Junagadh Agricultural University, Junagadh (Gujarat)
Keywords: Age at first calving, First service period, Heritability

Abstract

The heritability estimates of age at first calving (AFC), first lactation 305-day or less milk yield (FL305DMY) and first service period (FSP) of Sahiwal cattle ranged from zero to 0.80 ± 0.10, 0.04 ± 0.08 to 0.95 ± 0.24 and zero to 0.50 ± 0.18, respectively. Genetic correlation of AFC with FL305DMY and FSP ranged from -0.72 ± 0.22 to 0.44 and -0.83 ± 0.63 to 0.64 ± 0.001, respectively. However, genetic correlation of FL305DMY with FSP ranged from -0.90 ± 0.07 to 0.40 ± 0.36. The heritability estimates of the FSP was found to be low indicated the little scope for the genetic improvement; while higher heritability estimates of AFC and FL305DMY indicated the wide scope for further improvement in this traits through selection.

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Published
2014-06-01
How to Cite
Dongre, V., Gandhi, R., Raja, T., Ahlawat, A., & Sonawane, G. (2014). Genetic and Phenotypic Parameters of First Lactation Traits in Sahiwal Cattle: A Review. The Indian Journal of Veterinary Science, 2(2), 21-27. Retrieved from http://ijvs.info/index.php/ijvs/article/view/35
Section
Articles

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