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Economical Optimization in Environment Control for Swine Housing

猪舍环境控制的经济优化

基本信息

批准号：
04806037
负责人：
MINAGAWA Hideo
金额：
$ 1.34万
依托单位：
Kitasato University
依托单位国家：
日本
项目类别：
Grant-in-Aid for General Scientific Research (C)
财政年份：
1992
资助国家：
日本
起止时间：
1992 至 1994
项目状态：
已结题

项目摘要

An environment controller for swine buildings in an aspect of economic optimization was developed and tested in a field. The controller utilizes software models of the interaction between the livestock and building environment, amd computed costs associated with feed, heating, and ventilation.1) Swine production data from the Japanese literature were used in conjunction with a building thermal model to compute daily economically optimum setpoint air temperature in a swine house. Comparisons were made between two optimization ; feed conversion rate and net return. The optimum setpoint air temperature in an aspect of feed conversion rate were from 17.3ﾟC in finishing pigs to 19.3ﾟC in growing pigs. The economical setpoint air temperature for growing and finishing pigs ranged from 26ﾟC in summer to 13ﾟC in winter.2) An economical optimizing controller was made and tested in a swine house where about 250 heads of growing pigs, were fed. In hot environment, there were some pigs was dead due to ventilation accident. The estimated feed conversion rate 3.0 was derived from the experiment. However more than one year test is needed to evaluate net return with the economical optimization controller.3) To evaluate the effect of environment factors of air temperature and humidity on livestock, layr production test was performed. Five layrs of white leghorn were fed from 22 to 78 week old in an experimental house without air conditioning. Daily laying weight was related to daily air temperature and daily relative humidity. The air temperature affected twice rather than humidity on laying performance. This imply that economical optimization technique can be applied to layr buildings.

从经济优化的角度出发，研制了猪舍环境控制器，并进行了现场试验。该控制器利用软件模型之间的相互作用的牲畜和建筑环境，amd计算成本与饲料，加热和通风。1）猪生产数据从日本文献中结合建筑热模型计算每日经济最佳设定点的猪舍空气温度。比较了两种优化方法的效果：饲料转化率和净收益。从饲料转化率的角度考虑，最佳设定气温为肥育猪17.3 ℃ ~生长猪19.3 ℃。生长肥育猪的经济设定温度范围为夏季26 ℃ ~冬季13 ℃。2）研制了经济优化控制器，并在一个饲养250头生长猪的猪舍中进行了试验。在高温环境下，有部分猪只因通风事故而死亡。从实验中得出估计的饲料转化率3.0。但经济优化模型需要一年以上的试验来评估净收益。3）为了评估温湿度等环境因子对家畜的影响，进行了产蛋鸡试验。在无空调的试验舍中饲养5只22 ~ 78周龄的白色来航鸡。日产蛋重与日气温、日相对湿度有关。气温对产蛋性能的影响比湿度大两倍。这意味着经济优化技术可以应用于多层建筑。