奶牛抗热应激中草药添加剂对小鼠热耐力的影响

试验研究奶牛抗热应激中草药添加剂对热应激小鼠机体耐力的影响。试验分A、B、C、D4个处理,每个处理20只小鼠,分别喂以不同添加剂浓度的饲料21d[A组:0.5g/(10g体重)、B组:0.25g/(10g体重)、C组:0.13g/(10g体重)、D组0g/(10g体重)],每日光暗节律各12h,自由摄食与饮水。试验结果表明,A、B组体重增加显著高于C、D组(P<0.01),A、B、C组小鼠死亡数显著少于D组(P<0.05),受热90min后,A、B、C组小鼠肛温比D组分别低0.3℃、0.3℃、0.5℃(P<0.05),说明该添加剂具有一定的提高小鼠热耐力作用。

Effect of Chinese Herbal Compound Medicine Addtive of Milk Cow for Thermoresistant Stress Alleviation on the Endurance of Mice

The experiment explored the effects of Chinese herbal compound medicine addtive of milk cow for thermoresistant stress alleviation on the endurance of heat-stressed mice.The mice were divided into four group(namely A、B、C、D), each group 20 head mice,and were fed with different consistency of addtive for 21 days respectively[ie. 0.5 g/(10 g B.W) for A gorup, 0.25 g/(10 g B.W) for B gorup, 0.13 g/(10 g B.W) for C gorup, 0g/(10 g B.W) for D gorup), Dur-ing the experiments, the animals were maintained on a 12-h light and 12-h dark cycle a day with food and water at liberty.The experiment results showed that the B.W in A and B group increased obviously(P<0.01) compared with C and D group,the death number was significantly lower(P<0.05) in A、B and C group than in D group ,mice rectum temperature in A、B and C group were low 0.3、0.3 and 0.5℃ than of the D gorup(P< 0.05) respectively.It sugg-ested that the additve could enhance the heat stable potency.