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Table 2 Plasma α-tocopherol (μg/ml) and blood selenium (μg/g) concentrations in the sampled cows, by geographical region. n = Number of samples. Region 1: South-eastern Norway. Region 2: Rogaland county. Region 3: Western Norway. Region 4: Middle Nor-way (Trøndelag counties). Region 5: Northern Norway. Map of regions, see Fig. 1

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

Region

Plasma α-tocopherol

Blood selenium

 

n

Mean

St. dev.

n

Mean

St. dev.

1

93

6.5a,b

2.7

90

0.14m

0.04

2

49

7.3a,c

3.7

43

0.13m

0.04

3

70

7.5c

2.9

69

0.17n

0.05

4

68

6.9a,b,c

2.8

65

0.17n

0.04

5

34

5.9b

2.6

34

0.18n

0.04

Total

314

6.9

3.0

301

0.16

0.05

  1. a,b,c: Mean values without common letters are significantly different (p < 0.05).
  2. m,n: Mean values without common letters are significantly different (p < 0.001).