Selected cows(1)

Initial (a)

Final (b)

Difference

(a)-(b)

∆%(2)

P <(3)

Milk yield, kg∙cow−1∙day−1

36.89 (±5.49)

34.69 (±5.48)

2.20 (±2.13)

−6.66

0.03

4% FCM yield, kg∙cow−1∙day−1

32.83 (±4.39)

29.63 (±5.28)

3.21 (±2.73)

−11.86

0.02

Milk fat content, g 100 g−1

3.28 (±0.42)

3.02 (±0.39)

0.27 (±0.29)

−9.24

0.05

Milk fat yield, , kg∙cow−1∙day−1

1.21 (±0.18)

1.05 (±0.22)

0.16 (±0.14)

−16.68

0.03

Milk protein content, g 100 g−1

2.89 (±0.12)

3.08 (±0.10)

0.10 (±0.25)

5.92

0.04

Milk protein yield, kg∙cow−1∙day−1

1.07 (±0.16)

1.07 (±0.15)

-

-

0.96

Lactose content, g 100 g−1

4.87 (±0.10)

4.86 (±0.10)

0.02 (±0.08)

−0.32

0.65

Lactose yield, kg∙cow−1∙day−1

1.80 (±0.28)

1.69 (±0.29)

0.11 (±0.10)

−6.97

0.02

Total solid content, g 100 g−1

11.78(±0.47)

12.01 (±0.81)

−0.23 (0.64)

+1.66

0.38

Total solid yield, kg∙cow−1∙day−1

4.34 (±0.60)

4.17 (±0.75)

0.17 (±0.46)

−5.09

0.37

Non-fat solid content, g 100 g−1

8.50 (±0.12)

8.68 (±0.11)

0.18 (±0.22)

+2.06

0.08

Non-fat solid yield, kg∙cow−1∙day−1

3.14 (±0.48)

3.01 (±0.47)

0.13 (±0.15)

−4.38

0.07

Milk tank samples(4)

Milk fat content, g 100 g−1

3.43 (±0.03)

3.26 (±0.08)

0.17 (±0.11)

−5.40

0.11

Milk protein content, g 100 g−1 g

3.15 (±0.01)

3.28 (±0.03)

0.12 (±0.02)

+3.76

0.01

Lactose content, g 100 g−1

4.88 (±0.01)

4.90 (±0.01)

0.01 (±0.01)

+0.27

0.06

Total solid content, g 100 g−1 g

12.23(±0.03)

12.23 (±0.07)

-

+0.27

0.94

Non-fat solid content, g 100 g−1 g

8.78 (±0.01)

8.93 (±0.03)

0.14 (±0.02)

+1.61

0.00