Variable

Treatment¹

SEM

p<

T3.5

T7.0

T10.5

Treat²

Lineal³

Quadratic³

Milk, kg cow⁻¹ d⁻¹

27.7^b

29.6^a

30.6^a

0.91

0.01

0.01

0.36

4% FCM. kg cow⁻¹ d⁻¹

24.5^b

26.1^a

26.2^a

0.62

0.01

0.01

0.11

ECM, kg cow⁻¹ d⁻¹

24.2^b

25.7^a

26.0^a

0.62

0.01

0.01

0.18

Milk fat

kg cow⁻¹ d⁻¹

0.90

0.95

0.93

0.03

0.23

0.30

0.15

g/100g

3.26

3.25

3.05

0.11

0,14

0,08

0,33

Milk protein

kg cow⁻¹ d⁻¹

0.82^c

0.87^b

0.92^a

0.03

0.01

0.01

0.86

g/100g

2.97

2.95

2.99

0.05

0.56

0.63

0.35

Lactose, g/100g

4.91^b

4.93^ab

4.98^a

0.02

0.04

0.02

0.55

ST, g/100g

11.79

11.78

11.67

0.15

0.65

0.40

0.66

SNG, g/100g

8.57

8.57

8.66

0.06

0.27

0.15

0.43

Urea, g/100g

0.048^a

0.047^a

0.043^b

0.001

0.01

0.01

0.17

Casein, g/100g

2.40

2.38

2.42

0.02

0.21

0.42

0.12