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Table 2 Relative contribution of farm and litter to variation in plasma vit E and Se

From: Vitamin E and selenium plasma concentrations in weanling pigs under field conditions in Norwegian pig herds

All herds:

Variable:

Vit E

Se

Bodyweight

 

At D -1

D -1 to D 4

At D -1

D -1 to D 4

At D -1

Daily gain

Source of variation:

      

Farm

12.5%

25.7%

32.0%

45.6%

66.7%

58.2%

Litter

13.7%

0.4%

18.0%

33.4%

9.4%

2.3%

Remnant variance

73.7%

73.8%

50.0%

21.0%

23.9%

39.4%

Herds 2 to 6:

Variable:

Vit E

Se

Bodyweight

 

At D -1

D -1 to D 4

At D -1

D -1 to D 4

At D -1

Daily gain

Source of variation:

      

Farm

2.8%

15.9%

16.6%

11.4%

8.3%

31.9%

Litter

20.2%

3.4%

32.6%

22.7%

26.1%

7.1%

Remnant variance

77.0%

80.6%

50.7%

65.8%

65.7%

61.0%

  1. Variance component analysis of variation in the following variables of plasma vit E, plasma Se and bodyweight in weanling pigs: Start values at day -1 (At D -1), changes from day -1 to day 4 (D -1 to D 4), and daily bodyweight gain from day -1 to day 18 (Daily gain). Relative contribution from different sources of variation to the total variance of each variable, with and without herd 1 included.
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Acta Veterinaria Scandinavica

ISSN: 1751-0147