温度、通风及密度对肉鸡腹水症影响的研究

The effect of temperature,Ventilation and density on ascites in broiler chickens

采用三因子二水平的试验设计，将２４００只ＡＡ健康肉仔鸡随机分成８组，研究温度、通风、密度对肉仔鸡腹水症的影响。试验结果表明，肉仔鸡饲养在舍温２２℃～２５℃条件下，腹水症发病率（９．１％）明显低于饲养在舍温１２℃～１５℃条件下的发病率（１８．０％），差异极显著（Ｐ＜０．０１）；在通风３ｈ条件下饲养的肉鸡，腹水症发病率（１１．９％）也极显著，低于（Ｐ＜０．０１）通风１．５ｈ的发病率（１５．２％）；各饲养密度间，以及各因子间的互作效应，差异性均不显著；在４～７周龄期间，腹水症的发病率随周龄的增长而上升。

In a 3×2 factor experiment, 2400 AA health broiler chickens were randomly divided into 8 groups to study the effects of different temperature,ventilation and density on the incidence of ascites.The result showed that the incidence of asictes was significantly lower for the broiler chickens reared at the temperature of 22℃～25℃(9.1%) than for those reared at 12℃～15℃(18.0%)(P<0.01).The broiler chickens reared in the house with 3h ventilation had a significantly lower incidence of ascites (11.9%)than those with 1.5h ventilation (15.2%)(P<0.01).There was no significant difference between density levels,and no significant interaction between any factors. It was also found that the incidence of ascites increased with age before 7 week old and decreased with age after 7 week old.