Implications of Gene Inheritance Patterns on the Heterosis of Abdominal Fat Deposition in Chickens.

ABSTRACT: Heterosis, a phenomenon characterized by the superior performance of hybrid individuals relative to their parents, has been widely utilized in livestock and crop breeding, while the underlying genetic basis remains elusive in chickens. Here, we performed a reciprocal crossing experiment with broiler and layer chickens and conducted RNA sequencing on liver tissues for reciprocal crosses and their parental lines to identify inheritance patterns of gene expression. Our results showed that heterosis of the abdominal fat percentage was 69.28%-154.71% in reciprocal crosses. Over-dominant genes of reciprocal crosses were significantly enriched in three biological pathways, namely, butanoate metabolism, the synthesis and degradation of ketone bodies, and valine, leucine, and isoleucine degradation

SUBMITTER: Mai C 

PROVIDER: S-EPMC6826362 | biostudies-literature | 2019 Oct

REPOSITORIES: biostudies-literature