Journal of the Korea Academia-Industrial cooperation Society (한국산학기술학회논문지)

The Korea Academia-Industrial cooperation Society (한국산학기술학회)
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Effects of Dietary Supplementation of Enzyme complex on Growth Performance, Carcass Characteristics and Meat storability in Broiler Chickens

사료 내 복합효소제의 첨가가 육계 생산성 및 도체특성 및 저장성에 미치는 영향

  • Kim, Ki-Hyun (National Institute of Animal Science, RDA) ;
  • Jeong, Jin-Young (National Institute of Animal Science, RDA) ;
  • Song, Il-Hwan (Department of Animal Life and Environment Science, Hankyong National University) ;
  • Lee, Sung-Dae (National Institute of Animal Science, RDA) ;
  • Ji, Sang-Yun (National Institute of Animal Science, RDA) ;
  • Lee, Yoo-Kyong (National Institute of Animal Science, RDA) ;
  • Nam, Ki-Taeg (Department of Animal Life and Environment Science, Hankyong National University)
  • 김기현 (농촌진흥청 국립축산과학원) ;
  • 정진영 (농촌진흥청 국립축산과학원) ;
  • 송일환 (국립한경대학교 동물생명환경과학과) ;
  • 이성대 (농촌진흥청 국립축산과학원) ;
  • 지상윤 (농촌진흥청 국립축산과학원) ;
  • 이유경 (농촌진흥청 국립축산과학원) ;
  • 남기택 (국립한경대학교 동물생명환경과학과)
  • Received : 2018.09.20
  • Accepted : 2018.12.07
  • Published : 2018.12.31
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Abstract

This study was conducted to investigate the effects of dietary supplementation of enzyme complex (metalloprotease and xylanase) on growth performance, carcass characteristics and meat storability of broiler chickens. The experiment utilized a 2 (basal and low spec diets) ${\times}$ 3 (0, 0.5 or 1 g/kg of enzyme supplementation) factorial arrangement. A total of 360 male Ross broilers were randomly assigned into the following six groups: BD-T0 (basal diet + enzyme complex 0 g/kg), BD-T1 (basal diet + enzyme complex 0.5 g/kg), BD-T2 (basal diet + enzyme complex 1 g/kg), LD-T0 (low spec diet + enzyme complex 0 g/kg), LD-T1 (low spec diet + enzyme complex 0.5 g/kg), LD-T2 (low spec diet + enzyme complex 1 g/kg). Feed and water were provided ad libitum for 42 days, during which time feed intake and body weight were measured at one-week intervals. After the feeding trial, chickens were slaughtered by exsanguination and samples were collected. Feed intake was lower in the enzyme supplemented groups than the non-supplemented groups (p<0.05), as were body weight and gain (p<0.05). Thus, the feed conversion ratio improved in the enzyme supplemented groups relative to the non-supplemented groups (p<0.05). The carcass rate and production index were also significantly improved by supplementation with enzyme complex (p<0.05). Finally, the thiobarbituric acid reactive substances (TBARS) values were lower in the enzyme supplementation groups after 6 storage days (p<0.05). In conclusion, dietary supplementation with enzyme complex including metalloprotease and xylanase improved growth performance, carcass characteristics, and storability of broiler chicken meat.

본 연구는 육계사료 내 금속단백질분해효소와 xylanase를 포함하는 복합 효소제 첨가 급여가 육계 생산성, 도체특성 및 계육 저장성에 미치는 영향을 조사하기 위하여 실시하였다. 실험 디자인은 2 (기초사료, 저영양사료) ${\times}$ 3 (0, 0.5, 1 g/kg 효소첨가) 요인 배치로 설계하였다. 실험동물은 ross broilers 수컷 360수를 공시하여 다음의 6개의 시험 그룹에 완전임의 배치하였다. BD-T0(기초사료+복합효소제 0 g/kg), BD-T1(기초사료+복합효소제 0.5 g/kg), BD-T2(기초사료+복합효소제 1 g/kg), LD-T0(저영양사료+복합효소제 0 g/kg), LD-T1(저영양사료+복합효소제 0.5 g/kg), LD-T2(저영양사료+복합효소제 1 g/kg). 사료와 물은 42일 동안 자유채식을 실시하였으며, 사료섭취량과 체중은 1주 간격으로 측정하였다. 사양시험 종료 후에 방혈로 도살하고 분석에 필요한 시료를 채취하였다. 사료 섭취량은 효소첨가 그룹이 효소 비첨가 그룹에 비해서 유의하게 감소하였으며, 체중과 일당증체량은 효소첨가 그룹이 효소 비첨가 그룹에 비하여 유의하게 증가하였다. 따라서 사료요구율은 복합효소 첨가에 의해 유의하게 개선되었다(p<0.05). 복합효소첨가 급여에 의하여 도체율과 생산지수 또한 유의하게 개선되었다(p<0.05). TBARS는 계육 저장 6일차에 효소첨가 그룹이 효소 비첨가 그룹보다 낮은 값을 나타내었다(p<0.05). 본 연구의 결과를 종합해보면, 사료 내 복합효소제의 첨가 급여는 생산성과 도체성적 그리고 저장성을 유의하게 개선시켰다.

Keywords

Table 1. Ingredients and chemical composition of experimental diets

SHGSCZ_2018_v19n12_740_t0001.png 이미지

Table 2. Effects of dietary supplementation of enzyme complex on the growth performance in broiler chickens

SHGSCZ_2018_v19n12_740_t0002.png 이미지

Table 3. Effects of dietary supplementation of enzyme complex on the carcass characteristics in broiler chickens

SHGSCZ_2018_v19n12_740_t0003.png 이미지

Table 4. Changes in TBARS (mg malondialdehyde/kg sample)1) of breast and thigh meat in broiler chickens during storage periods

SHGSCZ_2018_v19n12_740_t0004.png 이미지

Table 5. Changes in VBN (mg %)1) of breast and thigh meat in broiler chickens during storage periods

SHGSCZ_2018_v19n12_740_t0005.png 이미지

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