高温条件下湿度对肉仔鸡耗料量、耗水量及生产性能的影响

Effect of Humidity on Feed Consumption,Water Consumption and Performance of Broilers Under High Temperature Condition

本研究分２个试验，研究了高温条件下不同湿度对肉仔鸡耗料量、耗水量以及生产性能的影响。试验１用４～５周龄肉仔鸡２１６只，温度控制为３２℃；试验２用６～７周龄肉仔鸡１８０只，温度控制为３０℃。试验１和２均设３０％、６０％、９０％三个湿度组，每组设６个重复，试验期均为２周。结果表明，在高温条件下（３２℃和３０℃），９０％相对温度组鸡单位体重耗水量显著高于３０％相对湿度组；随着鸡周龄从４～５周龄增至６～７周龄，高湿对鸡单位体重耗料量、单位体重耗水量以及日增重、料肉比的影响减小。

216 4～5weekold and 180 6～7weekold Avian broilers were each divided into 3 groups with 6 duplicates to study effect of humidity on feed consumption,water consumption and performance in two trials.Three humidity treatments in each trial were 30%、60%、90% relative humidity (RH) with 32℃ in trial 1 and 30℃ in trial 2.The results were showed that water consumption per unit body weight at 90% RH was significantly increased as compared with 30% RH,and effect of 90% RH on feed consumption per unit body weight,water consumption per unit body weight,Daily gain and feed to gain ratio became less with increasing age.