Abstract Effect of dietary protein source on broiler chicken growth performance, myogenic stem cell activity and heterogeneity, and muscle fiber morphometrics Leiva, S, J. Sandoval, A. J. Keel, O. Tejeda, C. Starkey and J. Starkey March 2020 Broilers | Feather Meal | Meat and Bone Meal | Muscle Development | Poultry | Poultry By-Product Meal | Soybean Meal