Table 3 Fatty acid composition of longissimus dorsi muscle of lambs restricted to 2-, 4-, 8-, and 12-h access to pasture.

From: Diet selection and n-3 polyunsaturated fatty acid deposition in lambs as affected by restricted time at pasture

Item

Treatment1

s.e.m.

P-value2

2H

4H

8H

12H

C10:0 (%)

0.16

0.17

0.17

0.20

0.008

0.437

C12:0 (%)

0.22

0.22

0.21

0.20

0.011

0.885

C14:0 (%)

2.68

2.59

2.65

2.51

0.074

0.880

C14:1 (%)

0.10

0.08

0.09

0.11

0.005

0.186

C15:0 (%)

0.38

0.47

0.47

0.50

0.019

0.113

C15:1 (%)

0.12

0.11

0.11

0.11

0.009

0.997

C16:0 (%)

23.12

22.81

22.67

21.59

0.233

0.096

C16:1 (%)

1.56

1.58

1.57

1.62

0.040

0.958

C17:0 (%)

1.18

1.32

1.38

1.34

0.041

0.364

C17:1 (%)

0.12b

0.17a

0.08c

0.09c

0.008

<0.001

C18:0 (%)

21.40

19.49

20.07

20.94

0.282

0.060

C18:1 trans-11 (%)

0.42b

0.60a

0.55a

0.58a

0.018

0.0002

C18:1cis-9 (%)

40.47

39.72

40.01

39.82

0.334

0.879

C18:2 trans-9 trans-12 (%)

0.42b

0.51a

0.50a

0.47a

0.011

0.003

C18:2 cis-9 cis-12 (%)

2.78b

3.64a

3.47a

3.88a

0.134

0.014

C18:3 n-6 (%)

0.04

0.05

0.04

0.04

0.003

0.584

C18:3 n-3 (%)

0.74b

1.16ab

1.10ab

1.56a

0.098

0.014

CLA cis-9 trans-11 (%)

0.47b

0.64a

0.72a

0.80a

0.036

0.004

CLA trans-10 cis-12 (%)

0.12

0.14

0.15

0.19

0.011

0.283

C20:0 (%)

0.18

0.17

0.22

0.21

0.010

0.224

C20:1 (%)

0.08

0.08

0.08

0.10

0.006

0.542

C21:0 (%)

0.38

0.34

0.46

0.41

0.073

0.953

C20:2 (%)

0.12b

0.21a

0.13b

0.12b

0.010

<0.001

C20:3 n-6 (%)

0.15

0.10

0.14

0.17

0.010

0.097

C20:3 n-3 (%)

0.02c

0.04b

0.02c

0.08a

0.005

0.034

C20:4 n-6 (%)

1.73b

2.09a

1.98a

1.93a

0.041

0.007

C20:5 n-3 (%)

0.09

0.13

0.11

0.11

0.002

0.052

C22:0 (%)

0.08a

0.05b

0.05b

0.07ab

0.004

0.005

C22:6 n-3 (%)

0.35b

0.44a

0.31bc

0.23c

0.021

0.0003

SFA (%)

49.71a

47.12b

48.13ab

48.17ab

0.307

0.016

MUFA (%)

43.73

43.60

42.85

42.30

0.282

0.245

PUFA (%)

6.79b

8.32a

7.78a

8.51a

0.204

0.005

n-6/n-3

3.74

3.68

3.93

3.79

0.153

0.955

IMF (g kg−1 DM)

4.42

3.03

3.33

3.38

0.291

0.350

  1. a–dMeans within a row with different superscripts differ significantly (P < 0.05). 1Treatments: 2H = 2-h access to pasture; 4H = 4-h access to pasture; 8H = 8-h access to pasture; 12H = 12-h access to pasture (control). 2Probability values for main effects. SFA = saturated fatty acid; MUFA = monounsaturated fatty acid; PUFA = polyunsaturated fatty acid; IMF = intramuscular fat; DM = dry matter; s.e.m. = standard error of mean.