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Table 2 Total lipids and fatty acid composition of longissimus lumborum muscle from Alentejana and Barrosã breeds fed either high or low silage diets 1-3

From: Expression of genes controlling fat deposition in two genetically diverse beef cattle breeds fed high or low silage diets

 

Alentejana

Barrosã

P

 

HS

LS

HS

LS

Breed

Diet

Breed × Diet

 

Mean

SE

Mean

SE

Mean

SE

Mean

SE

   

Total lipids§

1.21a

0.758

1.25a

0.836

1.76b

1.208

2.76c

1.955

<0.001

<0.001

0.001

Main individual fatty acids

           

  14:0†

2.04

0.082

2.24

0.121

2.29

0.075

2.71

0.098

<0.001

0.003

0.261

  16:0†

23.50a

0.362

23.17a

0.439

23.33a

0.325

25.40b

0.373

0.011

0.028

0.003

  16:1c9

2.37

0.162

2.52

0.102

2.85

0.103

3.27

0.189

<0.001

0.057

0.361

  18:0

15.14

0.709

14.04

0.492

14.20

0.424

14.04

0.423

0.378

0.244

0.380

  18:1c9‡

28.36

0.702

28.85

0.783

31.04

0.823

33.52

0.645

<0.001

0.053

0.189

  18:1c11

2.90

0.302

3.35

0.083

3.40

0.254

3.08

0.088

0.586

0.762

0.078

  CLA(c9t11)

0.21

0.011

0.20

0.014

0.45

0.025

0.45

0.018

<0.001

0.815

0.789

  18:2n-6*

7.39c

0.387

8.32c

0.719

6.07b

0.329

4.22a

0.251

<0.001

0.333

0.007

  20:4n-6†

2.39

0.156

2.25

0.148

1.53

0.140

1.28

0.117

<0.001

0.001

0.052

Partial sums

           

  Σ SFA†

42.10a

0.755

40.69a

0.815

41.29a

0.672

43.22b

0.624

0.209

0.736

0.037

  Σ MUFA‡

35.77

0.876

36.92

0.866

41.58

0.825

40.31

0.939

<0.001

0.952

0.206

  Σ TFA

1.65

0.095

2.03

0.145

2.49

0.106

2.62

0.114

<0.001

0.038

0.294

  Σ PUFA*

11.92

0.465

12.57

0.929

9.11

0.959

7.29

0.491

<0.001

0.446

0.111

  Σ n-3 PUFA†

1.50

0.095

1.13

0.059

1.23

0.134

0.661

0.038

<0.001

<0.001

0.288

  Σ n-6 PUFA*

10.27

0.407

11.34

0.886

7.90

0.791

6.55

0.472

<0.001

0.843

0.083

  Σ BCFA

1.66

0.062

1.41

0.057

1.71

0.054

1.46

0.054

0.394

<0.001

0.956

  1. §Published in [19].
  2. 1Different superscripts differ at least P < 0.05. SFA, sum of 12:0, 14:0, 15:0, 16:0, 17:0, 18:0, 20:0 and 21:0; MUFA, sum of c9-14:1, c7-16:1, c9-16:1, c9-17:1, c9-18:1, c11-18:1, c12-18:1, c13-18:1, 18:1c15 and c11-20:1; TFA, sum of 18:1t6-t8, 18:1t9, 18:1t10, 18:1t11, 18:1 t16 + c14 and 18:c9t11; PUFA, sum of 18:2n-6, 18:3n-6, 18:3n-3, 20:2n-6, 20:3n-6, 20:3n-9, 20:4n-6, 20:5n-3, 22:4n-6, 22:5n-3 and 22:6n-3; BCFA, sum of i-15:0, a-15:0, i-16:0, i-17:0, a-17:0 and i-18:0.
  3. 2Total lipids are expressed as g/100 g muscle; fatty acid composition is expressed as g/100 g fatty acids.
  4. 3HS high silage, LS low silage.
  5. †Variable adjusted for breed × total lipids; ‡ Variable adjusted for total lipids; * Variable adjusted for breed × diet × total lipids.
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BMC Veterinary Research

ISSN: 1746-6148

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