Velleman Sandra G
Department of Animal Sciences, The Ohio State University, Wooster, OH, United States.
Front Physiol. 2020 May 7;11:461. doi: 10.3389/fphys.2020.00461. eCollection 2020.
The poultry industry has placed significant emphasis on the selection of meat-type broilers for increased body weight, increased meat yield especially the pectoralis major (breast) muscle, decreased time to processing, and improved feed conversion Although significant improvements have occurred in fast-growing meat-type broilers, myopathies affecting meat quality especially in the pectoralis major muscle have occurred. Many of the broiler breast muscle myopathies are caused by inflammation leading to the necrosis of existing muscle fibers and resulting in replacement of the muscle fibers with extracellular matrix proteins especially fibrillar collagens, fibrosis. This review explores how the fibrotic deposition and organization of extracellular matrix proteins especially the fibrillar collagens, Types I and III, affects the phenotype of the Wooden Breast myopathy, functional properties of the pectoralis major muscle, and meat quality.
家禽业一直非常重视肉用型肉鸡的选育，以提高体重、增加产肉量，尤其是胸大肌（胸脯）的产量，缩短加工时间，并改善饲料转化率。尽管快速生长的肉用型肉鸡已取得显著进展，但影响肉质的肌病仍有发生，尤其是在胸大肌中。许多肉鸡胸肌肌病是由炎症引起的，炎症导致现有肌纤维坏死，进而使肌纤维被细胞外基质蛋白（尤其是纤维状胶原蛋白）取代，即纤维化。本综述探讨了细胞外基质蛋白（尤其是I型和III型纤维状胶原蛋白）的纤维化沉积和组织如何影响木胸肌病的表型、胸大肌的功能特性以及肉质。
