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Measurement of Thermal Environment Uniformity within High Density Stacked-Cage Layer House

机译：高密度叠笼层房屋内热环境均匀性的测量

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摘要

High density laying hen production system using eight stacked cages and manure belt is becoming popular in China.Although the system is widespread in USA and some other western countries, it is relatively new in China.The distributions of ventilation and thermal environment within the production facilities are still of big concerns due to the extensive barn size and high bird density.In this study, a field test was carried out to measure the temperature, wind speed,carbon dioxide concentration and their distributions within a newly built barn with cross ventilation system in Shan'xi Province in January 2015.The thermal environment was evaluated based on these measurements.The results showed that for horizontal direction, the average temperature variations were 5.67±0.46℃, 2.76±0.29℃, and 3.11±0.49℃ at the first, fifth, and seventh cage heights, respectively.For vertical direction, the temperature variations between first and 8th cage heights were 3.63±0.72℃, 1.30±0.46℃, and 4.09±1.44℃ at the cooling pad,middle of the house, and exhaust fan sections, respectively.The highest diurnal temperature difference was as high as 9℃.The average wind speed at the exhaust fan and first cage height areas were too high: 0.36±0.07 m/s and 0.32±0.07 rn/s respectively, which were both higher than the recommended threshold of 0.25 m/s.This paper provides an evaluation of environmental control technology and management in a high density stacked-cage-raising layer house.
机译：使用八叠网箱和粪肥带的高密度蛋鸡生产系统在中国正在流行，尽管该系统在美国和其他一些西方国家很普遍，但在中国却相对较新。生产设施内通风和热环境的分布由于谷仓的面积大，禽类密度高，仍然是一个令人担忧的问题。陕西省2015年1月，根据这些测量结果对热环境进行了评估，结果表明，水平方向的平均温度变化最初为5.67±0.46°C，2.76±0.29°C和3.11±0.49°C，在垂直方向上，第一和第八个笼高之间的温度变化分别为3.63±0.72℃，1.30±0.46℃和4.09±1.44℃最高的昼夜温差高达9℃。排风扇和第一笼高度区域的平均风速过高：0.36±0.07 m / s和0.32±0.07 rn / s，均高于建议的0.25 m / s阈值。本文对高密度叠笼式养鸡场的环境控制技术和管理进行了评估。

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  • 来源
    《Animal environment and welfare》|2015年|80-87|共8页
  • 会议地点 Chongqing(CN)
  • 作者

    Qiongyi Cheng; Baoming Li;

  • 作者单位

    Key Laboratory of Structure and Environment in Agricultural Engineering, Ministry of Agriculture,China Agricultural University, Beijing 100083, China;

    Key Laboratory of Structure and Environment in Agricultural Engineering, Ministry of Agriculture,China Agricultural University, Beijing 100083, China;

  • 会议组织
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 家畜;
  • 关键词

    Temperature variation; air velocity; carbon dioxide; comfort;

    机译：温度变化;风速;二氧化碳;舒适度;

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