绵羊硒应答性健康不佳的研究

通过对甘肃陇南地区绵羊食物链系统中微量元素分析和补硒效果观察表明,当地土壤和牧草中S_(?)含量分别为(0.154±0.02)×10~(-6)和(0.02±0.01)×10~(-6),绵羊全血和被毛S_(?)含量明显低于正常值。认为当地绵羊以营养不良为特征的疾病为硒应答性健康不佳。

Study on Selenium—responsive Unthriftiness in Sheep

The concentrations of trace elements in soils, forages and blood and hair of sheep were determined. The effectiveness of supplementation with selenium (Se) was observed in Longnan district, Gansu province. It was showed that the contents of Se in soils and forages were 0. 154±0.02 and 0.02±0.01 ppm respectively; the concentrations of Se in blood and hair of affected sheep were significantly lower than that in the healthy sheep. It is suggested that the disease of sheep characterized by malnutrition in this region is selenium—responsive unthriftiness