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Table 4 Average NEFA, IGF-I and leptin plasma levels in the two groups of cows during the period of observation

From: Energy balance, leptin, NEFA and IGF-I plasma concentrations and resumption of post partum ovarian activity in swedish red and white breed cows

Week from calving

-1

1

2

3

4

5

6

7

S.E.

P

           

ovarian resumption

day

ovarian resumption × day

NEFA (mEq/l)

A

155

299

255

244

214

236

144

134

44.11

NS

**

NS

 

B

119

328

319

138

142

134

160

130

    

IGF-I (ng/ml)

A

128

86a

66a

94

69

90

86

86

15.1

**

**

NS

 

B

106

37b

19b

56

42

52

57

52

    

Leptin (ng/ml)

A

3.5

3.2

3.4

3.6

3.4

3.3

3.4

3.4

0.43

NS

NS

NS

 

B

3.3

3.5

4.4

4.2

4.4

4.3

3.8

3.8

    
  1. a,b P – value < 0.05.
  2. ** P – value < 0.01