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Effect of Dietary Supplemention with Probiotics, Illite, Active Carbon and Hardwood Vinegar on the Performance and Carcass Characteristics of Broiler

사료내 생균제, 일라이트, 활성탄 및 목초액의 첨가가 육계의 성장 능력 및 도체 특성에 미치는 영향

  • Kim, Y.J. (Division of Life Resources, Taegu University)
  • 김영직 (대구대학교 생명자원학부)
  • Published : 2007.09.30

Abstract

We investigated the effects of dietary supplements of probiotics, illite, active carbon and hardwood vinegar on growth performance, feed intake, and pH, shear force, sensory evaluation, meat color and fatty acid composition of meat in broilers. Two hundred broilers were fed diets for five weeks containing 0.2% of probiotics (T1), and 1% of Illite (T2), 1% active carbon (T3), or 1% hardwood vinegar (T4). Body weight gain was higher in T1 and T4 groups fed the starter diet but was the lowest in C and T4 for finishing period (P<0.05). Feed efficiency was not significantly different. In proximate composition, crude fat content of chicken meat were decreased lower in all treatment groups than control, but moisture, crude protein and crude ash were not significantly different. Cooking loss was decreased in T3 and T4 and WHC (water holing capacity) was increased in T3 and T4 groups compared to the other groups. In sensory evaluation, T4 tended to improve the hardness. Redness $(a^*)$ and yellowness $(b^*)$ were no difference between the all treatment groups, lightness $(L^*)$ were higher in T1, T2, T3 and T4 groups than control group (P<0.05). Stearic acid content was lower in T1, T2, T3 and T4 groups, but oleic acid contents were higher in T1, T2, T3 and T4 groups (P<0.05). These results showed that supplementing broiler diets with 1.0% hardwood vinegar may noticeably improve the meat quality of broiler.

본 시험은 육계에 대한 생균제, 일라이트, 활성탄 및 목초액의 사료적 가치를 평가하기 위하여 생균제 0.2%(T1)와 일라이트(T2), 활성탄(T3) 및 목초액(T4)을 각각 1.0%를 broiler 200수에 급여하여 증체량, 사료 섭취량, pH, 전단력, 관능 평가, 육색 및 지방산 함량을 분석하였다. 증체량은 전기 사료 급여 시에 C보다 T1과 T4에서 유의적으로 높았고, 후기 사료 급여 시는 C와 T4보다 T1, T2 및 T3에서 유의적으로 높게 나타났다(P<0.05). 사료 효율은 처리구간에 유의성이 없었다. 계육의 일반 성분 중 수분과 조단백질 및 조회분은 유의성이 없으며, 조지방은 대조구보다 처리구에서 낮은 함량을 보였다. 가열 감량은 T3와 T4에서 낮았으며, 보수성은 T3와 T4에서 높았다. 관능 평가 결과 연도는 C가 가장 높고 T4가 제일 낮아 연도 개선 효과를 보였다. 육색 중 적색도$(a^*)$ 및 황색도$(b^*)$ 값은 모든 처리구에서 차이가 없었으나, 명도$(L^*)$값은 T1, T2, T3 및 T4에서 대조구보다 높았다(P<0.05). 포화 지방산인 stearic acid 함량은 C보다 T1, T2, T3 및 T4에서 낮았으며, 불포화 지방산인 oleic acid 함량은 대조구보다 처리구에서 높았다(P<0.05). 결론적으로 육계 사료에 목초액을 1% 첨가 급여할 경우 경쟁력 있는 브랜드 계육의 생산이 가능하며, 농가 소득 증대에 크게 기여할 것으로 생각된다.

Keywords

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