FATTY ACID COMPOSITION OF INTRAMUSCULAR LIPIDS N EAST BALKAN PIGS

Valentin Doychev, Stoyanka Stefanova

Abstract: A trial with 16 fattening pigs from N East Balkan breed has been conducted. The pigs has been divided in two groups with 8 pigs (5 mail castrated and 3 female) per group. The pigs from I group has been kept free range, on pasture, from 30 – 90 kg. The pigs from II group has been kept indoor and fed by compound feed during the complete fattening period (30 – 90 kg live weight). The chemical composition of meat has been determined on samples of m. longissimus thoracis. The fatty acid composition of triacilglicerols and phospholipids has been determined on samples of m. longissimus thoracis и m. semimembranosus. Insignificant (Р>0.05) higher intramuscular fat content in meat of indoor kept pigs compared to free range pigs has been observed. Statistically significant differences in fatty acid composition of triacilglicerols has been established. Statistically significant higher levels of n-3 PUFA (P<0.05) and lower levels of n-6/n-3 ratio (P<0.01) have been observed in muscle triacilglicerols of free range kept pigs compared to indoor kept pigs have been observed. Higher changes in fatty acid composition of triacilglicerols compared to phospholipids have been established.

Keywords: fatty acid composition; free range keeping; n-3 PUFA; phospholipids; pigs; triacilglicerols

Date published: 2023-01-30