Reduction of breast meat ratio of 'Hakataichibandori' raised with feed with low lysin content
2006
Tsukino, T.(Fukuoka-ken. Agricultural Research Center, Chikushino (Japan)) | Fukuhara, E. | Nishio, Y.
In an attempt to reduce the breast meat ratio of 'Hakataichibandori', which suffers from a lower market demand, 'Hakataichibandori' were given feed with a reduced lysin content along the order of 80% and 85% of the regimen for broiler feeding. The results were examined to determine influence on growth and the breast meat ratio. The body weight of a control group fed with normal feed was compared with a group given feed with an 80% lysin content to find any significant differences in body weight between them. However, there was no significant difference between the control group and the group given feed with an 85% lysin reduction. In terms of body part meat ratio, the thigh meat ratio was not affected by the lysin content reduction. However, for the group given feed with the lysin content reduced to 80%, the breast meat weight was reduced by 1.9% at nine weeks old. It was reduced by 1.4% at 10 weeks old, and by 1.0% at the 10-week mark when fed with the lysin content reduced to 85%. As to the abdominal fat, the ratio increased significantly by 0.6% at nine weeks old and by 0.8% at 10 weeks old when fed with the lysin content reduced to 80%. The same 0.5% ratio was true at nine weeks old when fed with the lysin content reduced to 85%. It was estimated that there will be a decrease of 16 to 23% in breast meat accumulation of freight when 'Hakataichibandori' is raised with a feed with a low lysin content.
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