摘要
为掌握夏季后备母猪舍环境调控的影响因子变化规律,以云南保山某规模后备母猪舍为试验对象,在猪舍内布置环境因子传感器,通过改变开启风机数量、风机组合和湿帘等措施,测试后备母猪舍内的温度、相对湿度和氨气的变化规律。试验结果表明:风机开启数量越多,舍内温度下降幅度越大(最大幅度为2.66℃),相对湿度上升幅度越大(最大幅度为9.76%),后备母猪舍内温湿度在通风方向上的分布越均匀。开启湿帘对后备母猪舍内降温效果明显,最大降温幅度为4.27℃,舍内相对湿度最大增加幅度为24.17%。开启左右两侧风机时,舍内温湿度分布较开启左中或右中侧风机均匀,后备母猪舍内平均THI指数为79.5,下降幅度为3.86%,能有效缓解猪只热应激;后备猪舍内的温度场不均匀系数为0.42,相对湿度场不均匀系数为0.5,舍内温湿度分布较为均匀。
In order to understand the change rule of the influencing factors of the environmental regulation of the reserve sow houses in summer,the temperature,relative humidity and ammonia in the reserve sow house were tested by changing the number of fans,fan combination,and wet curtain.The results showed that the more fans were turned on,the greater the range of temperature decrease(the maximum range was 2.66℃)and the greater the range of relative humidity increase(the maximum range was 9.76%),the more uniform the distribution of temperature and humidity in the ventilation direction in the reserve sow house.The maximum cooling range was 4.27℃,and the maximum increase of relative humidity was 24.17%.When the left and right fans were turned on,the distribution of temperature and humidity in the shed was more uniform than that of the left or right middle fans.The average THI index in the reserve female sheds was 79.5,with a decrease rate of 3.86%,which could effectively alleviate the heat stress of pigs.The uneven coefficient of temperature field and relative humidity field in the reserve piggery were 0.42 and 0.5,respectively,indicating that the distribution of temperature and humidity in the reserve piggery was relatively uniform.
作者
黄志滔
曹永峰
夏晶晶
吴凡
曾志雄
吕恩利
Huang Zhitao;Cao Yongfeng;Xia Jingjing;Wu Fan;Zeng Zhixiong;LüEnli(College of Engineering,South China Agricultural University,Guangzhou,510642,China;Guangzhou Jiaen Technology Co.,Ltd.,Guangzhou,510555,China;Guangdong Mechanical&Electrical Polytechnic,Guangzhou,510515,China)
出处
《中国农机化学报》
北大核心
2021年第11期50-57,共8页
Journal of Chinese Agricultural Mechanization
基金
国家重点研发计划项目(2018YFD0701002)
广东省重点领域研发计划资助(2019B020225001)
广东省畜禽疫病防治研究重点实验室开放课题(YDWS1904)
广州迦恩科技有限公司技术开发合作项目(HXKJHT2020058)。
关键词
后备母猪舍
环境调控
分布特性
温湿度
通风模式
reserve pigsty
environmental regulation
distribution characteristics
temperature and humidity
ventilation mode
