오리사 바닥재의 수분 증발량 평가
Assessment of Evaporation Rates from Litter of Duck House
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다운로드
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참고문헌
키워드
초록
The domestic duck industry is the sixth-largest among the livestock industries. However, 34.3% of duck houses were the duck houses arbitrarilyconverted from plastic greenhouses. This type of duck house was difficult to properly manage internal air temperature and humidity environment. Humidity environment inside duck houses is an important factor that directly affects the productivity and disease occurrence of the duck. Although thehumidity environments of litters (bedding materials) affect directly the inside environment of duck houses, there are only few studies related to humidityenvironment of litters. In this study, evaporation rates from litters were evaluated according to air temperature, relative humidity, water contents of litters,and wind speed. The experimental chamber was made to measure evaporation rates from litters. Temperature and humidity controlled chamber wasutilized during the conduct of the laboratory experiments. Using the measured data, a multi linear regression analysis was carried out to derive thecalculation formula of evaporation rates from litters. In order to improve the accuracy of the multi linear regression model, the partial vapor pressuredirectly related to evaporation was also considered. Variance inflation factors of air temperature, relative humidity, partial vapor pressure, water contentsof litters, and wind speed were calculated to identify multicollinearity problem. The Multiple R2 and adjusted-R2 of regression model were calculatedat 0.76 and 0.71, respectively. Therefore, the regression models were developed in this study can be used to estimate evaporation rates from the litterof duck houses
Abstract
The domestic duck industry is the sixth-largest among the livestock industries. However, 34.3% of duck houses were the duck houses arbitrarilyconverted from plastic greenhouses. This type of duck house was difficult to properly manage internal air temperature and humidity environment. Humidity environment inside duck houses is an important factor that directly affects the productivity and disease occurrence of the duck. Although thehumidity environments of litters (bedding materials) affect directly the inside environment of duck houses, there are only few studies related to humidityenvironment of litters. In this study, evaporation rates from litters were evaluated according to air temperature, relative humidity, water contents of litters,and wind speed. The experimental chamber was made to measure evaporation rates from litters. Temperature and humidity controlled chamber wasutilized during the conduct of the laboratory experiments. Using the measured data, a multi linear regression analysis was carried out to derive thecalculation formula of evaporation rates from litters. In order to improve the accuracy of the multi linear regression model, the partial vapor pressuredirectly related to evaporation was also considered. Variance inflation factors of air temperature, relative humidity, partial vapor pressure, water contentsof litters, and wind speed were calculated to identify multicollinearity problem. The Multiple R2 and adjusted-R2 of regression model were calculatedat 0.76 and 0.71, respectively. Therefore, the regression models were developed in this study can be used to estimate evaporation rates from the litterof duck houses
참고문헌 (13)
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