雏鸡缺硒病的临诊观察

110只二日龄白洛克健雏随机分为三组,喂以缺硒(0.0065ppm)、补维生素E(100IU/kg)和补硒(0.2ppm)日粮,进行了系统临诊观察。缺硒雏鸡三周龄开始发病,四周龄达到高峰,发病率为100％,死亡率达71.79％。病雏主要表现为精神沉郁,食欲减损或废绝,生长缓慢,消瘦或呈恶病质。特征性症状-渗出性素质(发生率达74％),皮下明显水肿,尸检见皮下充血出血并积有多量兰绿色胶样水肿液。补维生素E能明显推迟发病时间,降低发病率(20％)、死亡率(10％)和预防渗出性素质。补0.2ppm硒可预防发病且促进了雏鸡的生长发育。

CLINICAL OBSERVATIONS ON SELENIUM DEFICIENCY IN CHICKS

In chicks fed a natural diet (ND) deficient in selenium (0.0065ppm Se), symptoms began to appear at the age of 3 weeks and became serious at 4 weeks. Morbidity was 100%, and mortality up to 71.79%. The affected chicks showed depression, lack of appetite, poor growth, emaciation and cachexia. The characteristic signs were exudative diathesis and obvious blue-greenish edema under the skin.The ND supplemented with vitamin E (100IU/kg diet)delayed clinical signs, decreased morbidity and mortality, and prevented exudative diathesis.Addition of 0.2ppm Se to the ND prevented the above mentioned symptoms and markedly improved chicks in growth.