사료의 형태가 한우 거세우의 사료효율 및 도체성적에 미치는 영향 = Effect of Feed Type on Feed Efficiency and Carcass Characteristics of Hanwoo Steers

다국어 초록 (Multilingual Abstract)

Ninety five Hanwoo steers averaging 226kg of body weight were used to investigate the effect of dietary type on feed efficiency, carcass characteristics and economical analysis in Hanwoo feeding over 22 months. Treatments were composed of commercial formula feed (formula feed), TMR and Fermented-TMR (F-TMR). Intakes of dry matter and TDN were greater in the F-TMR than the other treatments during each growing and fattening phase (p<0.05). Although daily body gain of the F-TMR was lowest during the growing phase, but was 48% greater than those of other treatment during the finishing phase (p<0.05). Feed efficiency of the F-TMR was maintained constantly during whole growing and fattening phases. Carcass weight and rib-eye area of the F-TMR were greatest (p<0.05) among treatments. However, meat yield index and the rate of grade A in meat yield were highest in the formula feed having the thinnest back fat. Marbling score was hugely (p<0.05) increased when steers fed F-TMR, and therateofgrade 1+andoverinmeatqualitywas96%intheF-TMR. Although feed cost in the F-TMR was increased by 40% compare to the formula feed, but net income was increased by 29% due to improvement of meat quality and body gain.

국문 초록 (Abstract)

본 연구는 한우 거세우 95두 (평균체중 226 kg)를 이용하여 농후사료와 조사료 분리급여구, TMR구 그리고 TMR을 발효시킨 F-TMR구로 나누어 22개월동안 사육하여 도축하였을 때, 사료효율, 도체성적 및 경제성분석에 미치는 영향을 조사하기 위하여 실시되었다. 건물 및 TDN 섭취량은 육성비육 각 단계별로 F-TMR구에서 가장 많았다 (p<0.05). F-TMR구의 경우, 일일증체량은 육성기에는 처리구중 가장 적었으나, 비육후기에는 타 처리구에 비해 약 48%나 높았다 (p<0.05), 사료효율은 전 육성비육기간 동안 비슷한 수준으로 유지되었다. 도체중과 배최장근단면적에서는 F-TMR 급여구에서 가장 높았으나 (p<0.05), 등지방두께가 가장 얇았던 (p<0.05) 분리급여구에서 육량지수와 육량 A등급 비율이 높았다. F-TMR구의 근내지방도가 타구에 비해 현저히 (p<0.05) 증가되어 육질 1+등급이상 출현율이 96%에 달하였다. 경제성 분석에서 사료비는 F-TMR구가 분리급여구에 비해 40%가 증가되었으나 증체량과 육질등급의 향상으로 인하여 순수익은 29%나 증가되었다.

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