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Estimation of genetic parameters for early reproduction traits in Beetal goat

Published online by Cambridge University Press:  17 September 2021

Yogesh C. Bangar Open the ORCID record for Yogesh C. Bangar [Opens in a new window] ,
Ankit Magotra Open the ORCID record for Ankit Magotra [Opens in a new window] ,
A.S. Yadav  and
Ashish Chauhan
Yogesh C. Bangar
Affiliation:
Department of Animal Genetics and Breeding, Lala Lajpat Rai University of Veterinary and Animal Sciences, Hisar, Haryana 125001, India
Ankit Magotra*
Affiliation:
Department of Animal Genetics and Breeding, Lala Lajpat Rai University of Veterinary and Animal Sciences, Hisar, Haryana 125001, India
A.S. Yadav
Affiliation:
Department of Animal Genetics and Breeding, Lala Lajpat Rai University of Veterinary and Animal Sciences, Hisar, Haryana 125001, India
Ashish Chauhan
Affiliation:
Department of Animal Genetics and Breeding, Lala Lajpat Rai University of Veterinary and Animal Sciences, Hisar, Haryana 125001, India
*
Author for correspondence: Ankit Magotra, Assistant Professor, Department of Animal Genetics and Breeding, LUVAS, Hisar, Haryana-125004, India. E-mail: ankitoms@gmail.com
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Summary

The evaluation of early reproduction traits in Beetal goat was performed for possible effects of genetic and non-genetic factors on litter size at birth (LSB), litter size at weaning (LSW), litter weight at birth (LWB), litter weight at weaning (LWW) and age at first kidding (AFK). The data records consisted of information of pedigree and targeted traits pertained to 223 does born to 25 sires and 122 dams between the years 2004 to 2019. A general linear model was used for assessment of non-genetic factors such as period of birth, type of birth and dam’s weight at kidding on studied traits. Genetic evaluation of targeted traits was done to estimate variance components and genetic parameters under dyadic mixed modelling. The estimates of least-square means for LSB, LSW, LWB, LWW and AFK were observed as 1.27 ± 0.03, 1.25 ± 0.03, 3.24 ± 0.07 kg, 13.08 ± 0.30 kg and 27.56 ± 0.58 months, respectively. Only the period of birth showed significant (P < 0.05) effects for targeted traits in this study. The estimates of direct heritability for LSB, LSW, LWB, LWW and AFK were low in magnitude as 0.08, 0.03, 0.10, 0.03 and 0.06, respectively. The moderate to high genetic and phenotypic correlations among litter traits indicate simultaneous improvement for these traits. It was concluded that low ranged direct heritability estimates for targeted traits indicated modest scope for genetic improvement of reproductive efficiency in Beetal goat through selection and, therefore, adoption of improved managerial practices is necessary to improve reproductive efficiency of Beetal goat.

Keywords

Beetal goatHeritabilityLitter sizeReproduction

Information

Type
Research Article
Information
Zygote , Volume 30 , Issue 2 , April 2022 , pp. 279 - 284
Copyright
© The Author(s), 2021. Published by Cambridge University Press

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