Table 3 Average weekly milk production, milk composition, DMI and EB in the two groups of cows during the first 7 weeks postpartum

ovarian resumption

day

ovarian resumption × day

Milk yield (kg/day)

A

17

19

24

23

25

26

27

2.67

NS

*

NS

B

21

19

20

23

25

25

27

Milk Fat (%)

A

7.03

5.31

4.53

4.48

4.65

4.41

4.70

0.47

NS

**

NS

B

7.10

5.40

4.18

4.53

4.53

4.50

4.55

Milk Protein (%)

A

3.53

3.83

3.78^a

3.34

3.15

3.20

3.18

0.17

*

*

NS

B

3.60

3.37

3.25^b

3.28

3.08

3.23

3.03

DMI (kg/day)

A

11.3

14.5

15.5

15.8

18.0

17.9

19.3

1.28

NS

**

NS

B

11.2

11.8

13.6

16.9

17.1

17.5

18.6

Energy Balance (MJ/day)

A

-28.66

-7.64

-12.66

-3.81

2.65

1.52

5.80

8.31

NS

**

NS

B

-42.60

-27.48

-2.40

8.19

3.90

4.31

5.71