Regulation of myostatin expression is associated with growth and muscle development in commercial broiler and DMC muscle |
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Authors: | Tengfei Dou Zhengtian Li Kun Wang Lixian Liu Hua Rong Zhiqiang Xu Ying Huang Dahai Gu Xiaobo Chen Wenyuan Hu Jiarong Zhang Sumei Zhao Markandeya Jois Qihua Li Changrong Ge Marinus F W te Pas Junjing Jia |
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Institution: | 1.Yunnan Provincial Key Laboratory of Animal Nutrition and Feed,Yunnan Agricultural University,Kunming,People’s Republic of China;2.Faculty of Food Science,Yunnan Agricultural University,Kunming,People’s Republic of China;3.Department of Agricultural Sciences, School of Life Sciences, Faculty of Science, Technology and Engineering,La Trobe University,Bundoora,Australia;4.Animal Breeding and Genomics Centre, Wageningen UR Livestock Research,Wageningen University and Research Centre,Wageningen,The Netherlands;5.Kunming Agricultural University,Kunming,People’s Republic of China;6.Dali University,Dali,People’s Republic of China |
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Abstract: | Myostatin is a negative regulator of skeletal muscle growth. Muscle tissue is the largest tissue in the body and influences body growth. Commercial Avian broiler chickens are selected for high growth rate and muscularity. Daweishan mini chickens are a slow growing small-sized chicken breed. We investigated the relations between muscle (breast and leg) myostatin mRNA expression and body and muscle growth. Twenty chickens per breed were slaughtered at 0, 30, 60, 90, 120, and 150 days of age. Body and muscle weights were higher at all times in Avian chickens. Breast muscle myostatin expression was higher in Avian chickens than in Daweishan mini chickens at day 30. Myostatin expression peaked at day 60 in Daweishan mini chickens and expression remained higher in breast muscle. Daweishan mini chickens myostatin expression correlated positively with carcass weight, breast and leg muscle weight from day 0 to 60, and correlated negatively with body weight from day 90 to 150, while myostatin expression in Avian chickens was negatively correlated with carcass and muscle weight from day 90 to 150. The results suggest that myostatin expression is related to regulation of body growth and muscle development, with two different regulatory mechanisms that switch between days 30 and 60. |
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