면실박의 급여가 비거세 한우의 도체 및 육질 특성에 미치는 영향
Effect of Dietary Cottonseed Meal Supplementation on Carcass and Meat Quality Characteristics of Hanwoo (Korean Cattle) Bulls
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본 연구는 면실박의 급여가 비거세 한우의 도체 및 육질특성에 미치는 영향을 구명하고자 실시하였다. 22개월령 비거세 한우 8두를 5개월 동안 면실박의 급여(500 g/head /day) 유무에 따라 사육하여 도축한 후 등심(M. longissimus dorsi)을 채취하여 품질을 분석하였다. 도체의 품질, 고기의pH, 드립감량, 보수력 및 지방산 조성은 면실박 급여에 따른 차이가 없었다. 일반성분 함량은 면실박 급여구의 조단백질과 조회분 함량이 대조구(무급여구)보다 높았다(p<0.05). 표면육색은 저장기간 동안 면실박 급여구의 적색도(a*), 황색도(b*), chroma 값(C*) 및 총육색(total color)이높게 유지되었다(p<0.05). 따라서 면실박을 급여시 한우육의산화안정성이 증가되었다.
Abstract
The objective of this research was to investigate the effect of dietary cottonseed meal (CSM) supplementation on carcass and meat quality characteristics of Hanwoo (Korean cattle) bulls. Twenty two months-old-Hanwoo bulls of eight heads (4 heads per treatments) were fed for 5 months on a diet with or without (control) CSM (500 g/head/day). The samples of M. longissimus dorsi from carcasses were used for the quality measurement. Dietary CSM supplementation did not affect the carcass traits of bulls and pH value, drip loss, water-holding capacity and fatty acid composition of beef loin. Crude protein and crude ash content of beef loin were significantly (p<0.05) higher in beef loin from bulls fed CSM than in the control. During storage of 5 days at 4℃, CIE a*, b*, C* and total color values were significantly (p<0.05) higher in beef loin from bulls fed CSM than in the control. Overall, the present results indicate that dietary CSM supplementation may improve the oxidation stability of Hanwoo beef loin
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