Korean Journal of Poultry Science (한국가금학회지)

The Korean Society of Poultry Science (한국가금학회)
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Effect of Various Organic Dietary ME and CP on Performance, Blood Composition and Meat Quality in Meat Type Cross-Bred Chicks

유색육용계에 에너지 및 단백질 수준이 다른 유기 사료 급여가 생산성, 혈액성상, 계육 품질에 미치는 영향

  • Jeong, Y.D. (Department of Animal Resources & Biotechnology, Chonbuk National University) ;
  • Jeon, B.S. (Animal Environment & System Division, National Institute of Animal Science, RDA) ;
  • Ryu, K.S. (Department of Animal Resources & Biotechnology, Chonbuk National University)
  • 정용대 (전북대학교 동물자원과학부) ;
  • 전병수 (농촌진흥청 국립축산과학원 축산환경과) ;
  • 류경선 (전북대학교 동물자원과학부)
  • Published : 2009.06.30
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Abstract

This experiment was conducted to investigate the effect of organic dietary ME and CP on performance, blood composition and meat quality of cross-bred chicks for 15 weeks. Experiments were factorially designed with 3,000, 3,050, and 3,100 kcal of ME/kg, and 21 and 22% CP for the first five weeks; 3,050, 3,100, and 3,150 kcal of ME/kg, and 19 and 20% CP for the second five weeks; and 3,100 and 3,150 kcal of ME/kg, and 17 and 18% CP for the rest of weeks. Each treatment consisted of four replicates. Weight gain increased in treatments with higher ME diets for the first five weeks, but feed intake decreased significantly as dietary ME increased (P<0.05). Feed conversion also improved in chicks fed 3,100 kcal of ME/kg diets compared with those of 3,000, and 3,050 kcal of ME/kg (P<0.05), but was not influenced by dietary protein. Weight gain and feed conversion showed similar tendency for the second five weeks to those of the first five weeks. However, feed conversion improved significantly in 3,100 and 3,150 kcal of ME /kg compared to 3,050 kcal of ME/kg (P<0.05). Dietary protein did not affect the performance at all for this period. Weight gain and feed intake tended to increase in higher ME and lower protein diets from 11 to 15 weeks of age, whereas feed conversion decreased in 3,150 kcal of ME/kg more than 3,000 kcal/kg. No difference was found by CP treatments (P<0.05). There were no interactions in performance, blood composition and meat quality between dietary ME and protein. Further studies need to describe in whole period experiments instead of periodical experiment.

본 연구는 교잡육용계에서 최적 수준의 유기 사료 영양소 함량을 구명하고자 에너지 및 단백질 수준이 다른 사료 급여가 육색육용계의 생산성, 혈액 성상 및 계육 품질에 미치는 영향을 구명하기 위해 수행하였다. 공시동물은 0, 6, 11 주령 유색육용계를 사용하였다. 시험 사료의 에너지 및 단백질 수준은 0~5주에 ME 3,000, 3,050, 3,100 kcal/kg, CP 21, 22%, 6~10주는 ME 3,050, 3,100, 3,150 kcal/kg, CP 19, 20%, 11~15주는 3,100, 3,150 kcal/kg, CP 17, 18%로 하였다. 처리구는 0~5, 6~10주에 $2{\times}3$ factorial design으로 총 6개 처리구 이고 처리구당 4반복, 반복당 20수씩, 11~15주는 $2{\times}2$ factorial design이며, 총 4개 처리구, 3반복, 반복당 28수씩 배치하였다. 0~5주의 증체량은 에너지 수준이 증가할수록 증가하는 경향을 보였다. 사료 섭취량은 에너지 수준이 높을수록 현저하게 감소하였다(P<0.05). 사료 요구율은 ME 3,100 처리구가 ME 3,000, 3,050 처리구보다 통계적으로 감소하였고 단백질은 생산성에 영향을 미치지 않았다(P<0.05). 6~10주간 증체량, 사료 섭취량은 에너지 수준이 높을수록 각각 증가 및 감소하는 경향을 나타내었고, 사료 요구율은 ME 3,100, 3,150 처리구가 ME 3,050 처리구보다 유의하게 감소되었고, 단백질 처리구들은 생산성에 영향을 미치지 않았다(P<0.05). 11~15주간 증체량, 사료 섭취량은 에너지가 높고 단백질이 낮은 처리구에서 증가하는 경향을 나타내었다. 사료 요구율은 ME 3,150 처리구가 ME 3,000 처리구보다 두드러지게 감소하였고, CP 처리구는 차이가 없었다(P<0.05). 각 기간별 생산성에 대한 에너지 및 단백질 간 교호 작용은 나타내지 않았다. 혈액 성상 및 계육 품질은 에너지와 단백질 수준에 따른 처리구간 유의적인 차이가 없으며 교호 작용도 없었다. 따라서 0~5주 사료의 에너지 수준은 3,100 kcal/kg, 단백질은 21%, 6~10주는 ME 3,100 혹은 3,150 kcal/kg, CP 19%이고 후기 사료의 에너지 및 단백질 수준은 혹서기에 영향을 받아 적정 수준을 정할 수 없다. 본 연구 결과는 사양 기간별 수행한 결과이므로 0~15주간 수행하는 추가 시험이 필요하다.

Keywords

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