Early Growth and Protein-Energy Metabolism in Chicken Lines Divergently Selected on Ultimate pH

• DOI: 10.3389/fphys.2021.643580
• Publication Date: 2021-03-04T06:25:40Z
• Authors: Sonia Métayer-Cou...; Sophie Tesseraud; Christophe Praud; David Royer; Thierry Bordeau; Edouard Coudert; Estelle Cailleau-...; Estelle Godet; Joël Delaveau; Elisabeth Le Biha...; Cécile Berri
• Keywords: Carbohydrate Metabolism

In chickens, a divergent selection on the Pectoralis major pHu allowed creation of pHu+ and pHu− lines, which represent unique model for studying biological control carbohydrate storage in muscle. The present study aimed to describe early mechanisms involved establishment phenotypes. At hatching, chicks were slightly heavier but exhibited lower plasma glucose triglyceride higher uric acid. After 5 days, breast meat yield compared while their body weight was no different. both ages, vivo muscle glycogen content than muscles. ability store associated with increased expression SLC2A1 SLC2A3 genes coding transporters 1 3, CS LDHα key enzymes oxidative glycolytic pathways, respectively. Reduced at hatching concomitant activation by phosphorylation S6 kinase 1/ribosomal protein pathway, known activate synthesis chicken conclusion, differences observed slaughter age lines are already hatching. They several changes related metabolism, likely affect use eggs or exogenous nutrients growth energy storage.