Table 2 Comparison of mean polyunsatured fatty acid composition (expressed as mg/g of fatty acid or as a % of total lipid) between grass-fed and grain-fed cattle.

g/100 g lipid

1.35

12.55

5.14*

5.53*

2.13*

2.56*

0.20*

28.99*

24.69*

17.97*

10.41*

1.77*

0.92

11.95

2.65*

0.48*

0.47*

0.91*

0.11*

19.06*

34.99*

17.08

1.97*

8.99*

g/100 g lipid

2.95*

2.01

0.85*

0.71*

0.31

0.24*

na

3.41

42.5*

2.30

1.07*

2.78*

0.51*

2.38

0.48*

0.13*

0.19

0.06*

na

2.77

46.2*

2.58

0.19*

13.6*

% of total FAs

3.22*

3.41

0.72*

1.30*

0.52*

0.70*

0.43*

7.95

37.7*

5.00*

2.95*

1.72*

2.25*

3.93

0.58*

0.74*

0.12*

0.30*

0.14*

9.31

40.8*

8.05*

0.86*

10.38*

mg/100 g muscle tissue

na

108.8*

14.3

32.4*

24.5*

36.5*

4.2

na

930*

191.6

97.6*

1.96*

na

167.4*

16.1

14.9*

13.1*

31.6*

3.7

na

1729*

253.8

63.3*

3.57*

% of total fatty acids

na

6.56

0.87*

2.22*

0.94*

1.32*

0.17*

14.29*

56.09

9.80

4.70*

2.04*

na

5.22

0.72*

0.46*

0.08*

0.29*

0.05*

9.07*

55.51

7.73

0.90*

8.34*

% of total FAs

4.2*

5.4

na

1.4*

tr

0.6

tr

10.31*

34.17*

7.4

2.0

3.72*

2.8*

4.7

na

0.7*

tr

0.4

tr

7.29*

37.83*

6.3

1.1

5.73*

% fatty acid within intramuscular fat

na

3.29*

0.53*

1.34*

0.69*

1.04*

0.09

9.96*

40.96*

na

na

1.44*

na

2.84*

0.25*

0.35*

0.30*

0.56*

0.09

6.02*

46.36*

na

na

3.00*