Korean Journal of Organic Agriculture (한국유기농업학회지)

Korean Association of Organic Agriculture (한국유기농업학회)
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Effects of Microbial feed Additive and vitamin-C as an Alternative to Antibiotic on Growth Performances and Carcass Characteristics of Meat Cows

항생제 대체제로서 미생물배양액 및 vitamin-C 급여가 육우의 증체 및 도체형질에 미치는 영향

  • 남인식 (한경대학교 동물생명환경과학과) ;
  • 한창수 (한경대학교 동물생명환경과학과) ;
  • 안종호 (한경대학교 동물생명환경과학과)
  • Received : 2015.06.28
  • Accepted : 2015.08.20
  • Published : 2015.09.30
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Abstract

Twenty four Holstein steers (average body weight $714{\pm}13.60kg$) were used in this experiment to determine the effect of supplementing of microbial culture and coated vitamin-C on growth performances and carcass characteristics in finishing Holstein steers. Holstein steers were randomly assigned to feeding groups of control group (Con, 12 kg of basal diet/head/day), microbial culture group (MC, 12 kg of basal diet + 30 g of microbial culture/head/day) and coated vitamin-C group (CVC, 12 kg of basal diet + 10 g of coated vitamin-C/head/day). MC and CVC groups were higher in ADG compared to control (P<0.05). FCR was also lower in MC and CVC groups than control group (P<0.05). Back fat thickness, rib-eye area, marbling score, meat color and yield index were not changed by supplementing microbial culture and coated vitamin-C. MC group was higher for maturity compared to control and CVC group (P<0.05). CVC group was higher for fat color compared to control and MC group (P<0.05). Based on the results obtained from the current study, supplementation of microbial culture and coated vitamin-C as an alternative to antibiotic might increase growth performances and enhance carcass characteristics in finishing Holstein steers. However, more studies are needed to find out the optimum supplementing period of microbial culture or coated vitamin-C for high quality meat production from Holstein steers.

본 연구는 미생물제제의 일종인 yeast culture 및 코팅 처리된 vitamin-C의 첨가 급여를 통해 비육 말기 Holstein 거세우의 증체 및 도체형질에 미치는 영향을 조사하기 위한 목적으로 실시하였다. 평균체중이 $714{\pm}13.60kg$인 18개월령 Holstein 거세우 24두를 공시동물로 이용하였으며 각각 8두씩 3개 시험구로(대조구, MC급여구, CVC급여구) 완전임의 배치하여 출하 전 3개월간 사양시험을 실시하였다. MC급여구는 yeast culture를 일일 30 g, 코팅 처리된 vitamin-C는 일일 10 g씩 매일 아침 사료급여 시 top dressing형태로 급여하였다. 일당증체량은 MC급여구가 가장 높았으며 사료요구율은 MC급여구와 CVC급여구에서 가장 낮았다. 등지방두께, 배체장근 및 육량은 시험구간 유의차가 없었다. 지육중량과 성숙도는 MC급여구에서 가장 높았으며, 지방색은 CVC급여구에서 가장 높게 나타났다. 이상의 결과를 종합해 보면 출하 3개월 전 Holstein 거세우에게 항생제 대체제로 미생물제제인 yeast culture 또는 코팅 처리된 vitamin-C의 급여는 육질에는 큰 효과가 없으나 육량, 지육중량, 사료요구율 등에 긍정적인 영향을 줄 수 있을 것으로 판단된다. 아울러 미생물제제와 vitamin-C를 함께 급여하면 더욱 좋은 효과가 있을 것으로 예상된다.

Keywords

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