增加体重,减少死亡,防止生产力下降,是夏季高温期养好肉鸡的重点管理内容,也是肉鸡产业发展的重大课题之一。高温对产蛋期肉种鸡的影响,主要表现在:产蛋下降、蛋重变小、种蛋品质降低、种鸡死亡上升。作为预防对策,为减少高温给肉鸡生产造成的损失,有的使用机械通风、有的使用喷水、有的在饲料和饮水中添加应激调节剂,等等。本试验在 Increase weight, reduce deaths and prevent loss of productivity. It is the key management content of raising broilers during the hot summer months and is also one of the major issues in the development of broiler industry. The effects of high temperature on broiler breeders during the laying period are mainly manifested in the following: drop in egg production, decrease in egg weight, decrease in egg quality and increase in death of breeders. As a precautionary measure, in order to reduce the high temperature caused to the loss of broiler production, some use mechanical ventilation, some use water spray, some add feed and drinking water stress regulator, and so on. This test is in