Table 1.
Levels of selenium in serum and plasma measured by particular authors in their studies.
| Author | Sample Type | Number of Dogs | Breed | Age (Years) | Range (µmol/L) | Mean (µmol/L) | Method | Diet (Se Content) | Locality |
|---|---|---|---|---|---|---|---|---|---|
| Forrer et al. [6] | serum | X | X | X | 1.9–4.3 | X | ET-AAS | X | Switzerland |
| de Oliveira El-Warrak et al. [26] | serum | 6 | beagle | mean 3.2 | X | 3.44 | HPCL | Deficient | Canada |
| Pérez Alenza et al. [28] | serum | 38 | various breed | 5–13 | 2.7–5.1 | 3.71 | Fluorometric | X | Spain |
| Pilarczyk et al. [27] | serum | 14 | various breed | X | 2.6–4.4 | 3.47 | Fluorometric | X | Poland |
| Stowe et al. [24] | serum | 48 | Labrador retriever | 0–10 a | 2.7–3.1 | X | Fluorometric | Deficient b | USA |
| van Zelst et al. [10] | serum | 12 | Labrador retriever | 2–6 | 2.7–3.9 | 3.26 | ICP-MS | Sufficient | UK |
| Vitale et al. [25] | serum | 50 | various breed | 1–12 | X | 3.83 | ICP-MS | X | USA |
| Todd et at. [8] | plasma | 18 | Harrier hounds | 2–8 | X | 3.50 | Fluorometric | Sufficient | New Zealand |
| Waters et al. [29] | plasma | 49 | beagle | 8–10 | 2.9–4.3 | 3.49 | X | Sufficient | USA |
Se—selenium; a—long-term study, dogs measured from early age to 10 years of age; b—two groups of dogs, half getting approximately 90% of FEDIAF recommendation, another half about 65%; X—information is not available; ET-AAS—electrothermal atomic absorption spectrometry; HPCL—high-performance liquid chromatography; ICP-MS – inductively coupled plasma atomic emission spectrometry.