| Autor: |
A, Hamliri, D W, Johnson, M, Kessabi, W G, Olson |
| Rok vydání: |
1990 |
| Předmět: |
|
| Zdroj: |
Annales de recherches veterinaires. Annals of veterinary research. 21(2) |
| ISSN: |
0003-4193 |
| Popis: |
In order to evaluate the selenium status of sheep in the major raising areas of Morocco, blood selenium concentration, erythrocyte glutathione peroxidase activity and feed selenium levels were determined. A total of 843 blood samples from sheep and 118 feed samples were analyzed. Results showed that 73% of sheep sampled had blood selenium concentrations below 100 ng/ml, and were deficient or marginal. Erythrocyte glutathione peroxidase activity was below 19 IU/g hemoglobin and feed selenium levels below 0.1 mg/kg on a dry matter basis. The erythrocyte glutathione peroxidase activity was highly correlated with blood selenium concentration over a wide range of selenium levels (r = 0.88, P less than 0.001, N = 622), indicating that the enzyme can be used as an indicator of the selenium status of grazing sheep. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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