Dietary intake of radiocaesium by free ranging mountain sheep
| Autor: | B. Rafferty, E.J. McGee, H.J. Synnott, P.A. Colgan |
|---|---|
| Rok vydání: | 1993 |
| Předmět: |
Free ranging
Ecology Health Toxicology and Mutagenesis Dietary intake Diet composition Vegetation composition General Medicine Biology Pollution Mountain sheep cvg.developer Animal science Grazing medicine Environmental Chemistry cvg medicine.symptom Vegetation (pathology) Waste Management and Disposal Feces |
| Zdroj: | Journal of Environmental Radioactivity. 21:33-46 |
| ISSN: | 0265-931X |
| DOI: | 10.1016/0265-931x(93)90023-z |
| Popis: | The vegetation composition of the diet of mountain sheep was determined by faecal fragment analysis. A comparison of diet composition with the vegetation available for grazing revealed selection by sheep of grasses, in preference to the more abundant shrubby vegetation. The radiocaesium content of the diet and of the available vegetation was determined and compared with sheep in-vivo radiocaesium levels and sheep faeces radiocaesium activities. This approach demonstrated the importance of diet selectivity by sheep in determining dietary intake of radiocaesium. Faeces radiocaesium activity was shown to be more appropriate than vegetation radiocaesium activity as a predictor of in-vivo radiocaesium activity in free ranging mountain sheep. |
| Databáze: | OpenAIRE |
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