Table 1 Nutritional and fatty acid composition (% of total fatty acids) of the diets fed to calf- and yearling-finished steers

Nutrient, % DM

Crude protein

13.2 ± 1.09

9.40 ± 2.83

12.6 ± 1.52

13.4 ± 2.51

12.6 ± 0.49

ADF

15.2 ± 3.68

36.8 ± 4.54

35.3 ± 2.32

34.4 ± 2.71

16.7 ± 1.22

NDF

27.6 ± 4.45

55.6 ± 3.86

55.1 ± 1.81

56.7 ± 2.68

28.1 ± 1.88

Calcium

0.6 ± 0.19

0.7 ± 0.13

0.7 ± 0.07

0.8 ± 0.21

0.9 ± 0.27

Phosphorus

0.4 ± 0.09

0.3 ± 0.03

0.3 ± 0.03

0.3 ± 0.14

0.5 ± 0.06

TDN, %

75.2 ± 1.72^x

57.0 ± 5.91^y

59.0 ± 1.08^y

60.2 ± 3.53^y

74.5 ± 0.57^z

ME², MJ/kg DM

11.4 ± 0.26^x

8.61 ± 0.89 ^y

8.91 ± 0.16^y

9.1 ± 0.53^y

12.6 ± 0.49^z

Fatty acid, % total fatty acids

C16:0

18.7 ± 1.40

24.0 ±1.32

22.1 ± 0.71

28.0 ± 3.82

18.8 ± 0.41

C18:0

2.15 ± 0.17

2.51 ± 0.06

2.07 ± 0.22

2.73 ± 0.56

1.75 ± 0.09

c 9-18:1

20.8 ± 1.88

9.67 ± 6.32

14.1 ± 5.37

4.67 ± 2.12

18.5 ±0.27

c 11-18:1

4.37 ± 0.61

2.23 ± 0.60

2.62 ± 0.86

1.39 ± 0.54

4.00 ± 0.26

C18:2n-6

43.3 ± 0.87

23.7 ± 8.40

28.8 ± 2.39

15.2 ± 0.21

46.5 ± 0.71

C18:3n-3

9.20 ± 0.72

30.1 ± 10.3

26.1 ± 8.09

38.7 ± 8.69

9.00 ± 0.56

Total fatty acids (mg/g DM)

2.30 ± 0.69

1.00 ± 0.69

1.25 ± 0.69

0.96 ± 0.69

2.34 ± 0.69