Korean Journal of Poultry Science (한국가금학회지)

The Korean Society of Poultry Science (한국가금학회)
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Effect of Protein and Energy Levels on Performance and Carcass Rate in Cross Bred Chicks

단백질 및 대사 에너지 수준이 유색 육용계의 생산성 및 도체율에 미치는 영향

  • Na, J.C. (Poultry Science Division, National Institute of Animal Science) ;
  • Park, S.B. (Poultry Science Division, National Institute of Animal Science) ;
  • Bang, H.T. (Poultry Science Division, National Institute of Animal Science) ;
  • Kang, H.K. (Poultry Science Division, National Institute of Animal Science) ;
  • Kim, M.J. (Poultry Science Division, National Institute of Animal Science) ;
  • Choi, H.C. (Poultry Science Division, National Institute of Animal Science) ;
  • Seo, O.S. (Poultry Science Division, National Institute of Animal Science) ;
  • Ryu, K.S. (School of Animal Science & Biotechnology, Chun-buk National University) ;
  • Jang, H.K. (Department of Infection Diseases and Avian Diseases, College of Veterinary Medicine, Chonbuk National University) ;
  • Choi, J.T. (Extension Planning Division, R.D.A.)
  • 나재천 (국립축산과학원 축산자원개발부 가금과) ;
  • 박성복 (국립축산과학원 축산자원개발부 가금과) ;
  • 방한태 (국립축산과학원 축산자원개발부 가금과) ;
  • 강환구 (국립축산과학원 축산자원개발부 가금과) ;
  • 김민지 (국립축산과학원 축산자원개발부 가금과) ;
  • 최희철 (국립축산과학원 축산자원개발부 가금과) ;
  • 서옥석 (국립축산과학원 축산자원개발부 가금과) ;
  • 류경선 (전북대학교 동물자원과학부) ;
  • 장형관 (전북대학교 수의과대학) ;
  • 최종태 (농촌진흥청 지도정책과)
  • Published : 2009.03.31
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Abstract

The experiment were protein and metabolizable energy level in performance and carcass rate in cross bred chicks. One day old, 720 male and female cross bred chick were used for the experiments, and 20 chicks were placed at each pen. The energy level of feed was maintained about 2,950, 3,000, 3,050 kcal/kg, and protein content was adjusted about 19, 20, 21% from 0 to 5 weeks and energy level was maintained about 3,100, 3,150, 3,200 kcal/kg, and protein content was adjusted about 17, 18, 19% from the 6 to 10 weeks old of the experiment. At the whole time, ME 3,100 (2,950), 3,150 (3,000) and 3,200 (3,050) kcal/kg treatment groups was not significant difference in weight gain, feed intake, but 3,150 (3,000), 3,200 (3,050) kcal/kg treated groups revealed to show improved feed conversion rate than the group treated with ME 3,100 (2,950) kcal (P<0.05). And CP 17 (19), 18 (20), 19 (21)% treatment groups did not significant difference weight gain and feed intake but CP 19 (21)% treated group wan significant difference feed conversion rate than the CP 17 (19)% treated group (P<0.05). ME level of 3,100 (2,950), 3,150 (3,000), 3,200 (3,050) kcal/kg treatment groups in carcass rate and abdominal fat rate was not signficant difference and protein of 17 (19), 18 (20), 19 (21)% treatment groups after end of experiment. Between ME and CP of dietary was significant appeared to interact at 6~10 weeks (P<0.05).

본 실험은 CP와 ME 수준이 유색 육용계의 생산성 및 도체율에 미치는 영향을 구명하고자 사양 실험을 수행하였는데, 공시축은 한협3호 720수를 사용하였다. 사료 내 ME 수준은 사육 전기(0~5주령) 2,950, 3,000 및 3,050 kcal/kg, CP는 19, 20 및 21%이었으며, 사육 후기(6~10주령)에는 ME 3,100, 3,150 및 3,200 kcal/kg, CP는 17, 18 및 19%로 처리하였다. 시험 결과 전 기간 동안 ME 3,100(2,950), 3,150(3,000) 및 3,200(3,050) kcal/kg 처리구간의 증체량, 사료 섭취량에서는 차이가 나타나지 않았으나, 사료 요구율에서는 ME 3,150(3,000), 3,200(3,050) kcal/kg 처리구가 ME 3,100(2,950) kcal/kg 처리구보다 유의적으로 개선되었다(P<0.05). 또한, CP 17(19), 18(20) 및 19(21)% 처리구간에서도 증체량과 사료 섭취량은 차이가 없었으나, 사료 요구율에서는 CP 19(21)% 처리구가 CP 17(19)% 처리구보다 유의적인 차이를 보였다(P<0.05). 실험 종료 후 도체율 및 복강 지방 축적율은 ME 3,100(2,950), 3,150 (3,000) 및 3,200(3,050) kcal/kg 처리구간에 서로 차이가 나타나지 않았으며, CP 17(19), 18(20) 및 19(21)% 처리구간에서도 차이가 나타나지 않았다.

Keywords

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