高温气候下猪热应激的发生及防制

The Occurrence and Prevention Of Heat Stress of Swine in High Temperature

猪的生长与外界环境变化密切相关,而外界环境可以影响到猪对体温的调节,进而对猪的生产性能和健康状况产生影响。我国南方地区夏季气温高,且持续时间长,极其容易导致猪发生热应激。猪热应激一直是养殖户难以解决的难题,其可降低猪的生产性能,发病率上升,严重时导致猪只淘汰和死亡,给养殖户带来巨大的经济损失。随着我国养猪业不断集约化和规模化,南方地区夏季高温环境所引起的猪热应激反应愈发严重,逐渐引起国内外学者和养猪户的关注和担忧。为了预防高温气候下猪热应激的发生,给猪群创造良好的养殖环境,笔者通过对猪热应激发生原因和危害进行详细阐述,着重论述猪热应激的预防和调控措施。

The growth of pig is associate with the external environmen, while it could affect pig ajust its heat, and then have an impact on production performance and physical condition. It is extremely easy to lead to pig heat stress in south of Chi- na because of long time high temperature. Heat Stress of pig has been a difficult problem to handle, which could reduce the production performance and increase infective rate, even lead to death and elimination, and even bring enormous economic loss to farmers. With the development of large--scale and intensification, the severe condition of heat Stress of pig has been caused the reflection of scholars and farmers. In order to prevent from the occurrence of heat Stress under high--heat and high--wet circumstance and provide agood living environment for pigs. i have stated the reasons of its occurrence and harm in detail, and elaborated the measures of precaution, adjustments and controlment of pig Heat Stress.