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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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