Korean Journal of Poultry Science (한국가금학회지)

The Korean Society of Poultry Science (한국가금학회)
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A Study on the Amount and Chemical Compositions of Excreta from Laying Hens

산란계의 분뇨 배설량 및 이화학적 성상

  • 황보종 (농촌진흥청 국립축산과학원) ;
  • 홍의철 (농촌진흥청 국립축산과학원) ;
  • 나승환 (농촌진흥청 국립축산과학원) ;
  • 유동조 (농촌진흥청 국립축산과학원) ;
  • 김학규 (농촌진흥청 국립축산과학원) ;
  • 박미나 (농촌진흥청 국립축산과학원) ;
  • 정기철 (농촌진흥청 국립축산과학원) ;
  • 추효준 (농촌진흥청 국립축산과학원) ;
  • 박희두 (농촌진흥청 국립축산과학원) ;
  • 서옥석 (농촌진흥청 국립축산과학원)
  • Published : 2009.12.31
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Abstract

This work was conducted to investigate the manure excreta and chemical compositions of layers. Two hundred 1-d-old ISA Brown layers were used in this work, and ten of 200 layers were selected for measurement of manure excreta with feeding phase. Means of the manure excreta per bird, the moisture content of poultry, and the dried manure were $124.7\;{\pm}\;27.5\;g$/bird/day, $76.9\;{\pm}\;1.9%$, and $29.1\;{\pm}\;3.9\;g$/bird/day, respectively. N, $P_2O_5$, and $K_2O$ of manure (55 weeks) were $1.39\;{\pm}\;0.139$, $0.62\;{\pm}\;0.11$ and $0.68\;{\pm}\;0.09%$, respectively. pH, $BOD_5$, $COD_{Mn}$, and suspended solids (SS) were $8.19\;{\pm}\;0.71$, $50,266\;{\pm}\;621\;mg/L$, $62,832\;{\pm}\;803\;mg/L$, and $121,725\;{\pm}\;16,165\;mg/L$, respectively. Heavy metal contents in the manure were $0.003\;{\pm}\;0.0013\;ppm$ for Hg and $0.008\;{\pm}\;0.0012\;ppm$ for Pb, the latter of which was highly low compared with the standard (150 ppm), but no Cd was detected. The results of this work show the average excretion amounts and chemical compositions of layer's manure, which is used as an organic fertilizer.

산란계의 분뇨 발생량과 이화학적 특성을 구명하기 위해 1일령 산란계 200수를 선별하여 공시하였으며, 200수 중 10수씩을 선별하여 분뇨의 채취에 이용하였다. 산란계의 일일수당 평균 분뇨 발생량은 $124.7{\pm}27.5\;g$/수/일이었으며, 계분의 수분함량은 $76.7{\pm}1.9%$, 건물 함량은 $29.1{\pm}3.9\;g$/수/일이었다. 산란계 계분(55주령)의 N, $P_2O_5$ 및 $K_2O$는 각각 $1.39{\pm}0.14$, $0.62{\pm}0.11$ 및 $0.68{\pm}0.09%$이었다. 계분뇨의 pH는 $8.19{\pm}0.71$이었으며, $BOD_5$ 농도는 $50,266{\pm}621\;mg/L$로 나타났다. $COD_{mn}$의 경우 $62,832{\pm}803\;mg/L$이었으며, SS는 $121,725{pm}16,165\;mg/L$를 나타냈다. 계분의 중금속 함량 중 Pb은 $0.008{\pm}0.0012\;ppm$으로 규제 농도인 150 ppm보다 크게 낮았고, Cd의 경우 검출되지 않았으며, As는 $0.008{\pm}0.0017\;ppm$으로 검출되었다. Hg은 $0.003{\pm}0.0013\;ppm$이었으나, 규제 농도인 2 ppm에 미치지 못하였다. 따라서, 본 시험의 결과로 국내 산란계의 평균 분뇨 발생량을 추정할 수 있었으며, 분뇨의 이화학적 성상을 조사함으로써 유기비료원로서 적절한 사용이 가능할 것으로 생각된다.

Keywords

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