Record Details

Estimation of genetic parameters as well as trends for growth traits in Harnali sheep

Indian Agricultural Research Journals

View Archive Info
 
 
Field Value
 
Title Estimation of genetic parameters as well as trends for growth traits in Harnali sheep
 
Creator SEHGAL, TARUN
DAHIYA, SATPAL
DALAL, D S
PATIL, C S
RATWAN, POONAM
BANGAR, YOGESH
 
Subject Breeding value, Genetic parameters, Genetic trend, Growth, Harnali sheep
 
Description The current study focussed on the growth traits pertaining to Harnali sheep maintained at Sheep Farm, LUVAS, Hisar and data were recorded from pedigree sheets of 1278 animals. Growth traits considered were birth weight (BW), weaning weight (WW), six-month weight (6MW), yearling weight (YW), and pre-weaning average daily gain (PRWDG) and least-squares means for corresponding traits found to be 3.28±0.02 kg, 12.89±0.07 kg, 17.06±0.06 kg, 24.36±0.06 kg, and 106.74±0.61 g, respectively. Effect of different factors like period of birth, sex of animal and dams’ weight at lambing was studied on growth traits. Except YW, significant effect of period of birth was observed on all the growth traits. Sex had significant influence on BW only however, dams’ weight at lambing affected significantly all the considered growth traits except YW. By leveraging the sire component of variance and covariance from mixed model analysis, the paternal half-sib correlation method was used to estimate genetic as well as phenotypic parameters. Estimates of heritability for BW, WW, 6MW, YW and PRWDG were 0.28±0.07, 0.33±0.07, 0.31±0.07, 0.12±0.04 and 0.27±0.06, respectively. Genetic as well as phenotypic trends for WW and PRWDG were found to be positive. Moderate range of genetic variability at weaning weight and its positive genetic and phenotypic correlations with growth traits specially six month’s weight indicated that genetic improvement could be possible through early selection at weaning weight in Harnali sheep.
 
Publisher Indian Council of Agricultural Research
 
Date 2024-05-01
 
Type info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
 
Format application/pdf
 
Identifier https://epubs.icar.org.in/index.php/IJAnS/article/view/131099
10.56093/ijans.v94i5.131099
 
Source The Indian Journal of Animal Sciences; Vol. 94 No. 5 (2024); 435–441
2394-3327
0367-8318
 
Language eng
 
Relation https://epubs.icar.org.in/index.php/IJAnS/article/view/131099/54460
 
Rights Copyright (c) 2024 The Indian Journal of Animal Sciences
https://creativecommons.org/licenses/by-nc-sa/4.0