Genetic architecture of body weight and carcass traits in Ghanaian local chickens
Date
2022
Authors
Kanlisi, R. A.
Amuzu-Aweh, E. N.
Walugembe, M.
Naazie, A.
Otsyina, H. R.
Chouicha, N.
Kelly, T. R.
Gallardo, R.
Dekkers, J.
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Wageningen Academic Publishers
Abstract
Little information on the genetic architecture of production traits of indigenous African chicken exists. We estimated genetic parameters and performed a genome-wide association study using imputed 600K SNP genotypes on three Ghanaian chicken ecotypes (n=1,113). Variance components and heritabilities for body weight at 22 weeks (BW22), average daily gain (ADG), and carcass traits were estimated, as well as genetic and phenotypic correlations among them. Heritabilities for all traits were high (0.51-0.69), while those for carcass traits corrected for BW22 were moderate (0.21-0.38). Seven 1-Mb windows from six chromosomes each explained up to 25% of the genetic variance in these traits. These windows contained genes such as FOXO1, NCARP, LCORL, LAP3, LDB2, TGFBR2, and TAPT1, previously reported to have effects on growth and carcass traits. The moderate to high heritabilities and highly positive genetic correlations between them indicate that these traits can be improved through selective breeding.
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Comments
This proceeding is published as Kanlisi, R. A., E. N. Amuzu-Aweh, M. Walugembe, A. Naazie, H. R. Otsyina, N. Chouicha, T. R. Kelly et al. "Genetic architecture of body weight and carcass traits in Ghanaian local chickens." In Proceedings of 12th World Congress on Genetics Applied to Livestock Production (WCGALP) Technical and species orientated innovations in animal breeding, and contribution of genetics to solving societal challenges, pp. 2433-2436. Wageningen Academic Publishers, 2022. https://doi.org/10.3920/978-90-8686-940-4_587.
Rights Statement
© R.A. Kanlisi et al. 2022. This work is under a Creative Commons Attribution (CC BY) 4.0 International license.