Effect of supplementing isomerised poppy seed oil with high concentration of linoleic isomer T10,C12 and C9,T11 on fat level in sheep milk and its fatty acids profile

The influence of an addition of isomerised poppy seed oil on fat content in sheep milk and fatty acids composition was assessed in the present study. As a result of the isomerisation process of linoleic acid C18:2 cis-9, trans-12 in poppy seed oil, the synthesis of its conjugated dienes trans-10, cis-12 and cis-9, trans-11 in amount 34.3% and 32.2 %, respectively, took place. Addition of this oil to the feed of milking sheep caused a decrease in fat concentration in milk by 26 to 33 per cent. It also modified fatty acids composition causing an increase in concentration of conjugated dienes of linoleic acid c9,t11 and t10,c12, vaccenic acid and trans isomers of unsaturated fatty acids, and a decrease in short-chain saturated fatty acids content.

Zusammenfassung deutsch