한국가금학회지 (Korean Journal of Poultry Science)

  • 제36권2호
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  • Pages.117-123
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  • 2009
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  • 1225-6625(pISSN)
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  • 2287-5387(eISSN)
한국가금학회 (The Korean Society of Poultry Science)
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산란계의 유도 환우가 주요 장기와 혈액 성상의 변화에 미치는 영향

Effect of Induced Molting on Changes of Visceral Organs and Blood Stress Indicators in Laying Hens

  • 홍의철 (농촌진흥청 국립축산과학원) ;
  • 박희두 (농촌진흥청 국립축산과학원) ;
  • 강근호 (농촌진흥청 국립축산과학원) ;
  • 나재천 (농촌진흥청 국립축산과학원) ;
  • 유동조 (농촌진흥청 국립축산과학원) ;
  • 김학규 (농촌진흥청 국립축산과학원) ;
  • 최양호 (경상대학교 동물자원과학부) ;
  • 배해득 (일본나고야대학 대학원 생명농학연구과 동물영양정보학연구) ;
  • 황보종 (농촌진흥청 국립축산과학원)
  • Hong, E.C. (National Institute of Animal Science) ;
  • Park, H.D. (National Institute of Animal Science) ;
  • Kang, G.H. (National Institute of Animal Science) ;
  • Na, J.C. (National Institute of Animal Science) ;
  • You, D.C. (National Institute of Animal Science) ;
  • Kim, H.K. (National Institute of Animal Science) ;
  • Choi, Y.H. (Department of Animal Science and Institute of Agriculture & Life Sciences, Gyeongsang National University) ;
  • Bae, H.D. (Laboratory of Animal Nutrition, Graduate School of Bioagricultural Sciences, Nagoya University) ;
  • HwangBo, J. (National Institute of Animal Science)
  • 발행 : 2009.06.30
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초록

본 시험은 유도 환우 방법이 산란계의 주요 장기와 혈액 성상에 미치는 영향을 평가하기 위하여 수행하였다. 공시계는 산란율 85% 이상, 평균체중 $1.7{\pm}0.4\;kg$인 61주령 White Leghorn 150수를 이용하였다. 시험구는 크게 환우 처리를 하지 않은 대조구(Control), 급이 환우법(FM, feeding molt) 및 절식 환우법(SM, starving molt)의 3처리구로 나누고, 처리구당 5반복, 반복당 10수씩 완전 임의배치하였다. 심장의 무게는 대조구, FM구 및 SM구에서 각각 8.2, 7.9 및 7.5 g으로 처리구간에 유의적인 차이가 없었다. 간과 난포수란관의 무게는 모든 환우 처리구(급이, 절식)에서 대조구에 비해 무게가 감소하였으며(P<0.05), 난포수란관의 무게는 SM구가 FM구에 비해 낮게 나타났다(P<0.05). 대조구, 급이 환우구 및 절식 환우구에서 환우 2주전 CS는 각각 4.48, 4.66 및 $4.47\;{\mu}/mLg$이었으나, 1주 전에는 각각 7.32, 7.71 및 $7.11\;{\mu}/mLg$로 증가하였으며, 환우 1주후에는 절식구에서 $10.3\;{\mu}/mLg$로 가장 높았다. 절식과 급이로 환우시킨 산란계의 H : L 비율 변화에서, 환우 2주 전에는 0.27~0.29이지만, 1주 전에는 0.97~1.03으로 증가하였다. 환우 1주 후에는 절식 환우구에서 0.83으로 가장 높게 나타났으나, 이후로 점차 감소되었으며, 급이 환우구에서는 환우 기간 동안 0.45~0.54로 나타났다. 따라서, 본 연구는 급이로 환우를 유도시킨 경우에는 절식 환우 시킨 산란계에 비해 스트레스가 적다는 것을 제시한다.

This work was conducted to evaluate the effects of induced-molting methods on visceral organs and blood stress indicators in laying hens. One hundred fifty of 63-wk-old White Leghorn hens, with over 85% of egg production and $1.7\;{\pm}0.4\;kg$ of average weight, were used in this study. Treatments were control (non-molt treatment), feeding molt treatment (FM), and starving molt treatment (SM). There were 5 replicates of 10 hens for each treatment. All treatment groups were fed basal diet (15% CP and 2,700 kal/kg of ME) for two weeks as adaptation period. Heart weights were 8.2, 7.9 and 7.5 g in control, FM and SM, respectively. Liver and oviduct weights were decreased in both molting treatments compared with control (P<0.05). Corticosterone (CS) concentrations were 4.48, 4.47 and $4.66\;{\mu}g/mL$ in control, FM and SM at 61 weeks, respectively, but increased to 7.32, 7.11 and $7.71\;{\mu}g/mL$ at 62 weeks, respectively (P<0.05). Heterophil to lymphocyte ratios were 0.27~0.29 in all groups at 61 weeks, but increased to 0.97~1.03 in SM at 62 weeks. Both CS concentrations and H:L ratios in SM were greater compared with those for the other groups. These results suggest that hens in feeding molting program in hens are less stressed than those in starving molting one.

키워드

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