鸡舍CO_2浓度对肉鸡血液生化指标的影响

Effect of Different Carbon Dioxide Concentrations in Henhouse on Blood Parameters in Broilers

将320只21日龄艾维因肉鸡随机分为5个CO2浓度组(3 000 mg/m35、000 mg/m38、000 mg/m3、12 000 mg/m31、5 000 mg/m3),分别饲养在结构一致的自制环控塑料棚舍内。研究不同CO2浓度对肉鸡血液中免疫球蛋白及其它血液生化指标的影响。鸡舍内CO2浓度为5 000 mg/m3时,免疫球蛋白高于其它组(P>0.05);而当鸡舍内CO2浓度升高到12000 mg/m3时,免疫球蛋白呈下降趋势,血液中白细胞数量、血红蛋白含量和平均血红蛋白含量显著高于其它组(P<0.05),而死亡率比对照组高150.32%(P<0.05)。说明鸡舍内CO2浓度为5 000 mg/m3时,可提高肉鸡特异性免疫;当鸡舍内CO2浓度升高到12 000 mg/m3时,肉鸡正处于一种应激状态,不利于肉鸡健康。

The objective of this study was to determine the effects of different carbon dioxide（CO2） concentrations（3 000 mg/m^3 ,5 000 mg/m^3 ,8 000 mg/m^3 ,12 000 mg/m^3 ,15 000 mg/m^3）on blood parameters in chookes. The result showed that：adding CO2 concentration did not affect immune status of chookes as well as blood serum level of IgA,IgG and IgM but 5 000 mg/m^3 caused a enhance（ P 〉 0.05 ）. Red blood cells and white blood cell content increased significantly by adding CO2 concentration to 12 000 mg/ m^3 （ P〈0. 05 ）. The mortality is 1.5 times 12 000 mg/m^3 than the control （ P〈0. 05 ）. The findings presented here show that 5 000 mg/m^3 CO2 concentration could improve immunity of chookes. The chookes were stressed when slowly increasing CO2 concentration to 12 000 mg/m^3 ,which is unfavorable to healthy growth of broilers.