Abstract
본 연구는 감귤부산물 첨가 사료를 급여한 토종닭 고기의 영양성분을 파악하기 위하여 실시하였다. 토종닭은 감귤부산물을 급여하지 않고 산란계 배합사료로 39주령까지 사육한 것(T0구), 그리고 감귤부산물을 급여한 것(T1구)으로 나누어 각각 54수 씩 5반복 사육하였다. T1구의 사료는 16주령까지 T0구와 동일하게, <TEX>$17{\sim}39$</TEX>주령에는 T0구에 감귤부산물을 4% 첨가하여 제조하였다. 토종닭 고기($1.30{\pm}0.5\;kg$)는 도계 후 냉장 2일째 실험에 이용하였다. 토종닭의 가슴살 및 다리살의 열량, 수분, 조단백질, 조지방, 조회분, 구성아미노산 총량, 유리아미노산 총량 및 포화지방산/불포화지방산 조성비는 모두 감귤부산물 급여에 의한 유의적 차이를 보이지 않았다. T0구와 T1구의 콜레스테롤 함량은 가슴살이 각각 48.4 mg/100 g 및 47.6 mg/100 g, 다리살이 각각 75.7 mg/100 g 및 72.8 mg/100 g으로 나타나서 감귤부산물을 급여한 T1구가 다소 낮은 값을 보였다. 가슴살의 경우 대부분의 무기질, 비타민, 아미노산 및 지방산 함량이 감귤부산물 급여에 의하여 유의한 차이가 없었다. 그러나 다리살은 무기질의 인, 칼륨, 마그네슘, 그리고 비타민 B2, 유리아미노산의 L-glutamic acid, 지방산의 oleic acid 및 linoleic acid 함량이 T1구가 유의하게(p<0.05) 높게 나타나서 감귤부산물 급여 효과가 있었다. In this study, the effects of feeding citrus byproducts on nutritional components of Korean native chickens were investigated. Two samples of Korean native chickens were used for this study: T0 (chickens fed with only feed for laying hen until they became 39 weeks old, not with citrus byproducts) and T1 (chickens fed with citrus byproducts). The feed for T1 was the same as T0 for the first 16 weeks, and then was made by adding 4% of citrus byproducts to the feed for T0 between <TEX>$17{\sim}39$</TEX> weeks. The chicken used for the experiment was obtained by chilling them for 2 days after slaughter. There was no significant difference between T0 and T1 regardless of feeding citrus byproducts, in terms of their breast/thigh's calorie, contents of moisture, protein, fat and ash, total structural amino acid, total free amino acid and composition of saturated/unsaturated fatty acids. The breast's cholesterol amount of T0 and T1 were 48.4 mg/100 g and 47.6 mg/100 g, respectively, while that of thigh for T0 and T1 were 75.7 mg/100 g and 72.8 mg/100 g, respectively, which implies that T1 showed lower amount of cholesterol than T0. T1 showed significantly higher amount of phosphorus, potassium, magnesium and vitamin B2 for thigh than T0 (p<0.05).
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