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Kerala Veterinary and Animal Science University, Mannuthy, Thrissur, INDIA

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GENETIC AND PHENOTYPIC STUDIES OF SOME PRODUCTION TRAITS OF HARIANA CATILE*

S.K. Pandeyl, V.K. Arora, Rakesh Gael, Rinkan Singh

Affiliations

¹Department of Animal Genetics and Breeding, Chandra Shekhar Azad University of Agriculture and Technology, Mathura Campus, Mathura - 281001, India

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Cite article:- Pandeyl S.K., Arora V.K., Gael Rakesh, Singh Rinkan (2025). GENETIC AND PHENOTYPIC STUDIES OF SOME PRODUCTION TRAITS OF HARIANA CATILE*. Indian Journal of Animal Research. 35(2): 129 - 131. doi: .

ABSTRACT

Least-squares constants, heritabilities, genetic and phenotypic correlations among 300 days milk yield (MY300), total lactation milk yield (FLMY), lactation length (FLL) and dry period (FDP) were estimated using Henderson's method 3 from first lactation, records of 248 progeny of 25 Hariana bulls fitting a model with period and season of calving as fixed effects and sire within groups as a random effect with age at first calving as a linear covariate. Least-squares means of MY300, FLMY, FLL and FDP were 1103.02 ± 39.83 kg, 1351.35 ± 71.39 kg, 357.96 ± 13.68 days and 229.19 ± 9.94 days, respectively. The corresponding heritabilities were estimated as 0.364 ± 0.206, 0.471 ± 0.224, 0.442 ± 0.219 and zero. Genetic correlations among the MY300, FLMY and FLL were positive and significant. The phenotypic correlations of FDP with other traits were negative and highly significant.

KEYWORDS

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