Effect of Dietary SID Methionine on Growth Performance, Carcass and Meat Quality, Myogenic Gene Expression in Fast and Slow Growing Coloured Chickens
Effect of Dietary SID Methionine on Growth Performance, Carcass and Meat Quality, Myogenic Gene Expression in Fast and Slow Growing Coloured Chickens
Ho Le Quynh Chau, Than Thi Thanh Tra, Duong Thi Huong, Du Thanh Hang, Le Thi Thu Hang, Vo Thi Minh Tam, Dinh Van Dung*, Ho Trung Thong
ABSTRACT
Abstract | The study was conducted to determine the effects of different levels of dietary SID methionine on growth performance, carcass yield, meat quality, myogenic gene expression of two coloured chicken groups. A total of 480 one-day-old chicks (240 Ri hybrid and 240 Luong Phuong) of uniform body weight was divided into a 2 × 3 factorial arrangement of treatments with four replicate cages of 20 chicks per treatment. Two factors include 2 chicken groups (Ri hybrid-slow-growing strain and Luong Phuong-fast-growing strain) and three dietary SID methionine concentration (low, adequate, high). The methionine levels were set up by the recommendation of Evonik (2010) for coloured chickens. At 12 weeks of age, 8 male and 8 female chicks per treatment were randomly chosen for the carcass yield, meat quality, and myogenic gene expression evaluation (myostatin, myf5, MEF2B). The results showed that the higher level of dietary SID methionine than that of Evonik recommendation (2010) improved growth performance in slow-growing colored chickens but had no effect on body weight gain in fast-growing strain. The increasing breast muscle yield and decreasing abdominal fat were observed in the fast-growing chicks fed high dietary SID methionine. The improvements in breast muscle of the fast-growing colored strain was reflected by increased mRNA expression of Myf5 and MEF2B but decreased expression of myostatin.
Keywords | Carcass, Fast-growing colored chickens, Methionine, Myogenic gene expression, Slow-growing colored chickens
To share on other social networks, click on any share button. What are these?
