甘肃省永靖县羔羊死亡原因调查及预防措施探讨

Investigation on the Cause of Death of Lambs in Yongjing County of Gansu Province and Its Preventive Measures

近年甘肃省永靖县肉羊业稳步发展,存栏量达到60多万只,但是羔羊死亡率高,降低了肉羊养殖的经济效益。通过对永靖县5个乡镇9个行政村、133个养羊专业户进行了现场调查,对死亡羊只解剖,记录、观察和对比分析死亡时间、症状、环境变化等。结果表明,羔羊因疾病因素死亡率33.28%,饲养管理因素死亡率25.66%,饲料及营养因素死亡率的23.01%,遗传因素死亡率18.05%。羔羊死亡与遗传、饲养管理、营养水平的高低、疫病防控等密切相关,通过对羔羊死亡原因调查分析,结合有效的预防措施,能够显著提高羔羊的成活率,促进肉羊业健康发展。

In recent years,the mutton sheep industry in Yongjing county of Gansu province has developed steadily,and the number of lamb has reached more than 600000.The authors conducted a field survey of 133 sheep farmers in nine administrative villages in five towns of Yongjing county province,the time of death,symptoms and environmental changes were recorded,observed and compared.The results showed that the death rate of lamb due to disease was 33.28%,the death rate of feeding management was 25.66%,the death rate of fodder and nutrition was 23.01%,the death rate of genetic factors was 18.05%.The death of lamb is closely related to heredity,feeding and management,nutrition level and epidemic disease prevention and control,it can significantly improve the survival rate of lamb and promote the healthy development of mutton sheep industry.