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Table 3 Plasma α-tocopherol (μg/ml) and blood selenium (μg/g) concentrations in sampled cows with or without recorded treatments for selected diseases in the same lactation. Means and standard deviations (in brackets)

From: Plasma Vitamin E and Blood Selenium Concentrations in Norwegian Dairy Cows: Regional Differences and Relations to Feeding and Health

Disease: Mastitis (all) (COWMAST) Acute mastitis (COWACMA) Repro. disorders (COWREPRO) Ketosis (COWKETOS) Partur. Paresis (COWPARES)
With recorded treatments
No. of cows1 80 56 35 60 31
Plasma α-toc 7.2 (3.4) 7.5 (3.7) 7.2 (3.6) 6.8 (3.2) 6.0 (3.5)
No. of cows1 77 53 33 58 30
Blood Se 0.16 (0.05) 0.16 (0.04) 0.16 (0.04) 0.14 (0.04)* 0.15 (0.04)
Without recorded treatments
No. of cows 205 229 250 225 254
Plasma α-toc 6.8 (2.8) 6.8 (2.8) 6.9 (2.9) 7.0 (2.9) 7.1 (2.9)
No. of cows 197 221 241 216 244
Blood Se 0.15 (0.05) 0.15 (0.05) 0.15 (0.05) 0.16 (0.05)* 0.15 (0.05)
  1. 1 Due to limited material, some samples were analysed for a-tocopherol only. See Materials and methods.
  2. *These two values are significantly different (p < 0.02).