The pig FASN gene which is associated with fatty acid composition of backfat is located in the quantitative trait locus (QTL) region 0 to 40 cM, and is reported to affect the gadoleic acid
(C20:1, a mono-unsaturated fatty acid) content in backfat (Munoz et al., 2007).
Acids wt.% Myristic acid (C14:0) 0.70 Palmitic acid (C16:0) 10.53 Palmitoleic acid (C16:1) 0.05 Margaric acid (C17:0) 0.14 Stearic acid (C18:0) 9.57 Oleic acid (C18:1) 14.07 Linoleic acid (C18:2) 64.65 Linolenic acid (C18:3) 0.10 Arachidic acid (C20:0) 0.12 Gadoleic acid
(C20:1) 0.06 Behenic acid (C22:0) 0.01 TABLE 3: Fuel parameters of CCOME as compared to ASTM standards.
C20:1 (gadoleic acid
) is obtained through the ingestion of seeds (e.g., mustard seeds and hominy) and is likely derived from the action of elongases on oleic acid [101, 102].
Among unsaturated fatty acids the major fatty acids were oleic acid (C18:1), linoleic acid (C18:2), linolenic acid (C18:3) and palmitoleic acid (C16:1), these four fatty acids represent (76-82%) of the total fatty acids while gadoleic acid
(C20:1) and erucic acid (C22:1) were present less than 1% of the total fatty acids.