AL¹

LL

P³

−LY

+LY

−LY

+LY

SEM²

D

LY

D × LY

Measured parameters

Intake

OM, kg/d

18.5

19.8

19.9

18.1

0.61

0.44

0.55

0.14

N, g/d

520.8

561.4

549.3

504.7

16.8

0.95

0.73

0.09

Fecal excretion

OM, kg/d

5.6

5.5

6.7

5.4

0.20

0.003

0.007

0.09

N, g/d

128.5^a

135.2^a

232.9^c

185.9^b

11.2

<0.0001

0.03

0.03

Total tract digestibility

OM, %

69.5

71.9

66.3

70.0

0.58

0.005

0.003

0.66

N, %

75.1

75.9

57.9

63.8

1.6

<0.0001

0.01

0.15

Estimated parameters

Potential ruminal degradation

OM, % of OM intake

62.6^c

62.1^c

56.9^a

55.6^b

0.75

<0.0001

0.004

0.03

N, % of N intake

56.2

55.6

36.0

30.8

2.2

<0.0001

0.001

0.25

Amount going out of the rumen⁴

OM, kg/d

7.0

7.6

8.7

8.1

0.28

0.0001

0.87

0.39

N, g/d

228.1

249.1

350.5

345.0

13.4

<0.0001

0.29

0.13

Post-ruminal disparition⁵

OM, %

18.2

26.0

21.6

32.4

1.5

0.05

0.001

0.43

N, %

42.3

45.8

39.7

47.3

1.6

0.21

0.02

0.96