DOI: 10.46897/livestockstudies.1916843 ISSN: 2717-8331

A Meta-Analysis of Genotype * Environment Interaction Based on Growth Traits Across Different Species

İshak Daşkaya, Türker Savaş
Show PDF Cite
Genotype*environment (G*E) interaction refers to the phenomenon whereby genotypes express different performance relative to each other under varying environmental conditions. In animal breeding, G*E interaction represents one of the key factors influencing the effectiveness of selection. The aim of this study was to evaluate the impact of G*E interaction on growth traits in pigs, sheep, cattle, and chickens using genetic correlation estimates between environments. For this purpose, a systematic review of the literature was conducted, resulting in a dataset comprising 63 studies and 456 genetic correlation estimates. These data were analyzed using a multilevel meta-analysis approach. The overall pooled genetic correlation estimate for the investigated growth traits was 0.60 (95% CI: 0.57-0.63). The analysis revealed a moderate level of heterogeneity among the studies (I2 = 37.03%). The results indicated that the pooled genetic correlations between environments were statistically significant for each species considered (p

More from our Archive