Estimation of Genetic Parameters of Lifetime Performance Traits in Murrah Buffaloes

Dev, Kapil; Dhaka, S. S.; Yadav, Abhay Singh; Patil, Chandrashekhar S.

doi:10.5958/2277-940x.2016.00076.0

Cited by 11 publications

(26 citation statements)

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“…In the present investigation, lower heritability estimates of production traits, viz. FLTMY, FLSMY, FLL, FDP, FSP, FCI, Total LTMY, LTMY, MY/PL, HL, MY/HL and PL was in agreement with earlier reports [24,25,26,27] in buffaloes corroborating that these parameters, with low additive genetic variance, are less governed by genetic influences and henceforth, can be improved through better management. In buffaloes, lower to higher heritability for milk yield have been reported in different buffalo breeds [7,28,29,30,31,7] which suggests there is sufficient additive genetic variation to respond to selective breeding.…”

Section: Discussionsupporting

confidence: 92%

Association between age at first calving, first lactation traits and lifetime productivity in Murrah buffaloes

et al. 2022

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Objective: This study was conducted to estimate the association of age at first calving with first lactation traits as well as lifetime performance traits in Murrah buffaloes.Methods: Data on first lactation and life time performance of Murrah buffaloes (n=679), maintained at ICAR-CIRB, Hisar, India during the period 1983 to 2017, were deduced to calculate heritability estimates, genetic and phenotypic correlation of different first lactation and lifetime traits. The univariate animal model was fitted to estimate variance components and heritability separately for each trait, while bivariate animal models were set to estimate genetic and phenotypic correlations between traits under study.Results: The heritability was high for First Peak Milk Yield (FPY, 0.64±0.08), moderate for Age at First Calving (AFC, 0.48±0.07) and breeding efficiency (BE 0.39±0.09). High genetic correlations of FLTMY (First Lactation Total Milk Yield) with FLSMY (First Lactation Standard (305 days or less) Milk Yield), FPY (First Peak Milk Yield) and FLL (First Lactation Length) was seen. Likewise, genetic correlation of AFC was positive with traits viz. FLTMY, FLL, FDP (First Dry Period), FSP (First Service Period), FCI (First Calving Interval), HL (Herd Life) and PD (Productive Days). Significant phenotypic correlation of FLTMY was observed with traits viz. HL (Herd Life), PL (Productive Life), PD, Total LTMY (Total Lifetime Milk Yield), Standard LTMY (Standard Lifetime Milk Yield). Moreover, positive genetic and phenotypic correlation of FPY was observed with HL, PL, PD, Total LTMY and Standard LTMY.Conclusion: This study reports that age at first calving had positive genetic correlation with FDP, FSP, FCI and UD (Unproductive Days) while, negative association of AFC was observed with FLSMY, PL, Total LTMY, Standard LTMY and BE. This suggests that reduction of age at first calving would results in improvement of lifetime performance traits.

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Section: Discussionsupporting

confidence: 92%

Association between age at first calving, first lactation traits and lifetime productivity in Murrah buffaloes

et al. 2022

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“…Overall least square means for F305MY, FPY, FLL, AFC and FCI were found to be 1893.68 ± 20.69 kg, 10.55 ± 0.07 kg, 343.85 ± 3.47 days, 1331.89 ± 8.76 days and 496.75 ± 4.71 days respectively (Table 1 ). The results were in confirmation with Thiruvenkadan et al (2015), Gupta et al (2012) and Dev et al (2015). According to the results of present study, the season of calving had significant effect on AFC and FCI, with highest values reported in winter season and lowest in rainy season for both traits.…”

Section: Resultssupporting

confidence: 92%

Estimates of genetic parameters of economic traits in murrah buffaloes

Kour

GADVASU-Ludhiana²

2021

Journal of AgriSearch

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Data from 1991 to 2017, pertaining to early performance traits was collected from 659 Murrah buffaloes, sired by 188 bulls, maintained at Directorate of Livestock Farms, Guru Angad Dev Veterinary and Animal Sciences University, Ludhiana, Punjab. Least squares means and effect on non-genetic factors were evaluated for economic traits. Moderate heritability estimates of 0.217 ± 0.00, 0.231 ± 0.00, 0.260 ± 0.046 were calculated for first calving interval (FCI), First 305 day milk yield (F305MY) and first peak yield (FPY) respectively and low heritability values of 0.015± 0.025 and 0.043 ± 0.03 were estimated for age at first calving (AFC) and first lactation length (FLL) respectively. The phenotypic and genetic correlation of AFC was found to be positive with FLL and FCI and negative with F305MY and FPY. Although the production efficiency traits like F305MY, FLL and FPY had high positive genetic and phenotypic correlation among themselves.

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“…The phenotypic correlations of PY were positive and significant with LL and negative and significant with DP. Similar findings were reported by Tailor (1995), Kumar (2000), Chaudhari (2015), Dev (2015) and Jakhar et al, (2016). Further, Singh et al, (2011) also reported higher but comparatively low estimates of genetic correlation TLMY and PY.…”

Section: Resultssupporting

confidence: 77%

Estimation of Genetic Parameters for Production and Reproduction Traits in Murrah Buffaloes

Jakhar¹,

Yadav²,

Dhaka³

2017

Int.J.Curr.Microbiol.App.Sci

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Estimation of Genetic Parameters of Lifetime Performance Traits in Murrah Buffaloes

Cited by 11 publications

References 0 publications

Association between age at first calving, first lactation traits and lifetime productivity in Murrah buffaloes

Association between age at first calving, first lactation traits and lifetime productivity in Murrah buffaloes

Estimates of genetic parameters of economic traits in murrah buffaloes

Estimation of Genetic Parameters for Production and Reproduction Traits in Murrah Buffaloes

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