奶山羊缺硒病的实验研究

Study on Selenium Deficiency Disease in Dairy Goat

本文分别以低硒日粮和加硒日粮喂饲实验母奶山羊,并对实验母羊后代肌肉注射0和0.2mg/kg体重的亚硒酸钠,进行缺硒病研究。结果表明,母羊和羔羊对低硒营养均有明显的应答反应。应用低硒日粮喂饲奶山羊60天以后可引起发病,母羊和羔羊的发病率分别为50％和85.7％,死亡率为50％和71.4％。被检的17种器官组织含硒水平的组间比较均呈显著差异(P<0.05、0.01或0.001)。血硒和被毛硒水平的变化出现较早,其测定结果可作为奶山羊缺硒病的早期诊断指标。

This experiment was conducted with dairy goats fed low-selenum (0.02ppm) diet. The results showed that selenium deficiency occurred in 60 days; incidence rates for goats and lambs were 50％ and 85.7％ and mortality 50％ and 71.4％ respectively. Significant differences were found between treated and control groups in 17 organs or tissues examined. Selenium changes appeared earlier in blood and hair,which could be used as indicators for early seIenium deficiency diagnosis.