Fatty acid profile of the backfat layers in four pig breeds

Abstract

The aim of this study was to describe and compare the fatty acid profile of the backfat layers in four pig breeds – Landrace, Pietrain, Duroc and Large White. Six gilts per breed were used for the analysis. While differences between the examined breeds were limited to the content of C18:1n-9 and the total level of monounsaturated fatty acids (MUFA), which were highest in the inner backfat layer of Duroc pigs, the two layers differed substantially. Generally, the inner backfat layer was more saturated when compared to the outer layer. On the other hand, the content of the polyunsaturated fatty acids (PUFA) was higher in the outer layer. The differences in the fatty acid profile between the two backfat layers were most visible in the Landrace pigs. The latter showed significantly higher content of C18:0 (P<0.001), which was also found in Duroc (P<0.05), as well as total saturated fatty acids (SFA) (P<0.01) in the inner layer. Furthermore, higher levels of C18:2n-6 (P<0.05), C18:3n-3 (P<0.01) and the total amount of PUFA (P<0.05) were found in the outer backfat layer in the animals of the Landrace breed.

Principal Component Analysis and Cluster Analysis for Fatty Acid Assessment of Backfat in Three Pig Breeds

“…Pig breeds have different fat deposition, fat-specific metabolic characteristics, fatty acid compositions and various other different properties (Poklukar et al, 2020;Popova & Nakev, 2019). Zappaterra et al used PCA to study fatty acids composition in BF of 798 individuals Italian Large White heavy pig in order to assess environmental factors and carcass features associated with changes in fatty acids composition (Zappaterra et al, 2022).…”

Genome-Wide Association Study and Identification of Candidate Genes for Intramuscular Fat Fatty Acid Composition in Ningxiang Pigs

“…However, there are significant differences in the composition of fatty acids in different tissues [26], which is also influenced by sex [27]. Interestingly, docosahexaenoic acid (DHA) has only been found in the tissues of Ningxiang pigs [26,28], but not in any other pig breeds or tissues [29,30]. DHA belongs to the omega-3 family alongside alpha-linolenic acid (ALA) and eicosapentaenoic acid (EPA), which are essential nutrients integral to human life.…”