Journal of Animal Health and Production

Short Communication
J. Anim. Health Prod. 9(2): 193-197
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Nguyen Thuy Linh1, Nguyen Van Vui1*, Budi Guntoro2, Nguyen Hoang Qui2

1Tra Vinh University, No. 126 Nguyen Thien Thanh Street, Ward 5, Tra Vinh City, Tra Vinh Province, Vietnam; 2Department of Livestock Social Economics, Faculty of Animal Science, Universitas Gadjah Mada, Indonesia.

Abstract | The study was conducted on 120 local crossbred chickens to identify the effect of Methionine supplementation on growth performance and carcass characteristics of chickens from 5 – 14 weeks of age. The experiment was a completely randomized design with four treatments (0.10; 0.15; 0.20; and 0.25% of Methionine in the diet, the total Met in each diet was increased following the standard of NRC) and three replicates per treatment (10 chickens per replicate, 5 male and 5 female chickens). The chickens had ad libitum accessed to feed and water. The results showed that there was a linear improvement of daily weight gain, feed intake, and feed conversion. Methionine supplementation in the diets at the rate of 0.25% reduced feed intake (51.13 g/day), increased final live weight (1513 g/bird), daily weight gain (18.30 g/bird), and improved feed conversion rate (2.79) (P<0.05). Carcass weight, breast weight, and thigh weight showed a linear increase by the Methionine treatments (P<0.05). However, internal organs were not exhibited any significant change (P>0.05) although their weight was increased with increasing concentration of Methionine. It could be concluded that the 0.25% Methionine supplementation is beneficial to improve the performance of chickens.

Keywords | Local crossbred chickens, Methionine, Growth performance, Carcass characteristics