Table 1
Mean comparison ± standard deviation between high and low groups for the traits included in the principal components analysis (PCA)
Carcass quality Mean Low Mean High Significance
Carcass height (CH) 72.79 ± 9.90 69.57 ± 12.73 NS
Weight of ham (WH) 19.88 ± 2.46 19.66 ± 3.10 NS
Weight of Shoulder (WS) 10.26 ± 1.25 10.93 ± 2.10 NS
Intramuscular fat (IMF) 2.21 ± 0.88 1.49 ± 0.38 NS
Fatty acids
Saturated FA
Myristic acid (C14:0) 1.22 ± 0.13 1.12 ± 0.12 NS
Palmitic acid (C16:0) 23.78 ± 0.79 21.39 ± 0.69 ***
Heptadecanoic acid (C17:0) 0.20 ± 0.03 0.33 ± 0.09 ***
Stearic acid (C18:0) 14.65 ± 1.16 13.69 ± 0.77 *
Arachidic acid (C20:0) 0.26 ± 0.05 0.21 ± 0.08 NS
Monounsaturated FA
Palmitoleic acid (C16:1 n-7) 2.74 ± 0.24 2.20 ± 0.33 ***
Heptadecenoic acid (C17:1) 0.20 ± 0.05 0.32 ± 0.20 **
Oleic acid (C18:1 n-9) 42.57 ± 1.34 34.92 ± 2.96 ***
Octadecenoic acid (C18:1 n-9) 4.04 ± 0.27 3.70 ± 0.31 *
Eicosenoic acid (C20:1 n-9) 0.86 ± 0.08 0.77 ± 0.07 NS
Polyunsaturated FA
Linoleic acid (C18:2 n-6) 7.16 ± 0.52 15.11 ± 1.65 ***
α-Linolenic acid (C18:2 n-3) 0.46 ± 0.08 1.10 ± 0.56 ***
Eicosadienoic acid (C20:2 n-6) 0.41 ± 0.05 0.63 ± 0.13 ***
Eicosatrienoic acid (C20:3 n-6) 0.16 ± 0.03 0.53 ± 0.15 ***
Arachidonic acid (C20:4 n-6) 0.84 ± 0.17 3.10 ± 0.77 ***
Metabolic ratios
Average Chain Length (ACL) 17.44 ± 0.02 17.49 ± 0.12 *
Saturated FA (SFA) 40.12 ± 1.51 36.72 ± 1.22 ***
Monounsaturated FA (MUFA) 50.72 ± 1.56 42.38 ± 3.13 ***
Polyunsaturated FA (PUFA) 9.03 ± 0.64 20.46 ± 2.21 ***
Peroxidability index (PI) 12.28 ± 3.80 32.43 ± 4.43 ***
Double-bond index (DBI) 0.65 ± 0.20 0.91 ± 0.03 ***
Unsaturated index (UI) 1.63 ± 0.50 2.48 ± 0.10 ***

NS: p-value > 0.05, * p-value < 0.05, ** p-value < 0.01, *** p-value < 0.001.

Ramayo-Caldas et al. BMC Genomics 2012 13:547   doi:10.1186/1471-2164-13-547

Open Data