Linoleic acid metabolic pathway allows for an efficient increase of intramuscular fat content in pigs

Table 1 Description of the data set used in the analyses

Items	No. of pigs	No. of sires	No. of dams	No. of litters	Mean	Standard deviation
Pedigree	162,494	1032	32,767	38,253	–	–
Trait^a
Body weight at test, kg	91,448	670	22,297	38,226	105.4	12.4
Backfat thickness at test, mm	91,061	670	22,256	38,109	16.1	3.4
Intramuscular fat, %	1371	179	752	755	4.9	1.9
C18:2, mg/g FA	1371	179	752	755	113.4	21.9
C20:2, mg/g FA	1371	179	752	755	5.4	1.2
C20:4, mg/g FA	1371	179	752	755	13.5	6.3
C18:2, mg/g	1371	179	752	755	17.1	4.2
C20:2, mg/g	1371	179	752	755	0.8	0.3
C20:4, mg/g	1371	179	752	755	1.9	0.7
C20:2 / C18:2 (×100)	1371	179	752	755	4.8	0.8
C20:4 / C18:2 (× 100)	1371	179	752	755	11.9	4.8
Covariates
Age at test, d	91,448	670	22,297	38,226	177.2	10.6
Age at slaughter, d	1371	179	752	755	213.5	9.9

^aIntramuscular fat content and fatty acid composition in the muscle gluteus medius. Linoleic acid (C18:2), eicosadienoic acid (C20:2) and arachidonic acid (C20:4) are expressed in relative (mg/g of fatty acid (FA)) or in absolute value (mg/g of dry muscle)

ISSN: 2049-1891