Arthur J R, Price J, Mills C F
Vet Rec. 1979 Apr 14;104(15):340-1. doi: 10.1136/vr.104.15.340.
Cattle on 18 of 21 farms in north-east Scotland were found to have low whole blood activities of the selenium-containing enzyme, glutathione peroxidase (less than 5 units per ml whole blood), and a low blood concentration of selenium (less than 0.05 mg per litre). These cattle had all been fed on locally produced feedstuffs without any mineral supplementation. The low selenium status in cattle occurred on farms with soils derived from a range of parent material, no one particular type predominating.
在苏格兰东北部21个农场中的18个农场里，发现牛的含硒酶谷胱甘肽过氧化物酶的全血活性较低（每毫升全血低于5个单位），且血液中硒浓度较低（每升低于0.05毫克）。这些牛均以当地生产的饲料为食，未添加任何矿物质。牛的低硒状况出现在土壤源自多种母质的农场，没有一种特定类型占主导。
