닭 성장 및 육질개선을 위한 수용성키토산의 사료첨가 급이효과

Abstract

The objectives of this study were (1) to investigate the effects of chitosan-based feed additive(CFA) on the growth performance, feed intake, feed conversion, carcass characteristics, and (2) to explore the composition of biochemical components and on the textural and microstructural properties growing-finishing broiler chickens. The body weight gain of chicken fed with CFA was increased about 18% when compared to than that of commercial feed group. The mortalities of chicken fed with CFA were reduced about 55% when compared to than that of commercial feed group. There were no differences between control and broiler chicken fed with CFA in chemical components. Among fatty acids, comparably higher contents of 16 : 0, 16 : 1, 18 : 1 ω9 and 18 : 1 ω7 were observed in broiler chicken fed with CFA. The texture of breast meat in broiler chicken fed CFA exhibited a higher value for storage modulus compared than that of control. The microstructure of breast muscle showed a great difference between control and broiler chicken fed with CFA. This result might be greatly related to the hardness of texture. As a result, this study may suggest that the CFA effectively increased the body weight and reduced the mortality of chicken, and the CFA may be useful in poultry industry as cost-effective and eco-friendly feed additives.