Phenotypic, genetic and environmental trends of production traits in Phule Triveni synthetic cow

G S AMBHORE; AVTAR SINGH; D K DEOKAR; MANVENDRA SINGH; S K SAHOO

doi:10.56093/ijans.v87i6.71173

Authors

G S AMBHORE ICAR-National Dairy Research Institute, Karnal, Haryana 132 001 India
AVTAR SINGH ICAR-National Dairy Research Institute, Karnal, Haryana 132 001 India
D K DEOKAR ICAR-National Dairy Research Institute, Karnal, Haryana 132 001 India
MANVENDRA SINGH ICAR-National Dairy Research Institute, Karnal, Haryana 132 001 India
S K SAHOO ICAR-National Dairy Research Institute, Karnal, Haryana 132 001 India

https://doi.org/10.56093/ijans.v87i6.71173

Keywords:

Environmental, Genetic, Phenotypic, Phule Triveni, Production traits

Abstract

The research data spread over a period of 37 years (1976 to 2012) were utilized to study the production traits, viz. first lactation 300 day milk yield (FL300DMY), first lactation total milk yields (FLTMY), first lactation length (FLL) and first dry period (FDP). The 493 first lactation performance records of Phule Triveni cows reared at Research Cum Development Project on Cattle, Mahatma Phule Krishi Vidyapeeth (MPKV), Rahuri was used to investigate the effect of environmental factors on first lactation production traits. Phenotypic, genetic and environmental trends were estimated using Smith II (SM-II) and best linear unbiased prediction (BLUP) methods in these traits. The estimated annual phenotypic, genetic and environmental trends were -20.70 ± 1.42 kg, 33.38 ± 48.99 kg (SM-II) and 1.31 ± 0.60 kg (BLUP) and - 54.08 ± 49.01kg (SM-II) and -22.01 ± 1.58 kg (BLUP) for FL300DMY, - 21.01 ± 4.18, 21.35 ± 60.09 kg (SM-II) and 2.15 ± 0.73 kg (BLUP) and - 42.36 ± 60.23 kg(SM-II) and - 23.16 ± 4.24 kg(BLUP) for FLTMY, - 0.44 ± 0.30 days, 4.27 ± 4.94(SM-II) and 0.09 ± 0.13(BLUP) days for FLL, 0.98 ± 0.24 days, - 0.99 ± 3.58(SM-II) and - 0.11 ± 0.08 (BLUP) days, 1.97 ± 3.59 (SM-II) and 1.09 ± 0.25(BLUP) days for FDP, respectively. The genetic trends for most of the production traits were positive except FDP revealing desirable improvement in performance traits over time.

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