Research demonstrates differences in growth rates between heritage and modern broiler chickens, indicating implications for poultry breeding.
These results indicate that selection for growth has affected intestinal microbiota as bacterial diversity was different in the ileum and cecum which could partly explain growth rate differences among heritage and modern lines. In addition, the increased predicted metabolic pathways in the ileum of SG birds could positively affect growth rate, and further research is needed to elucidate this hypothesis.
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Kpodo et al. (2026) studied this question.
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