Adipose tissues of fat-tailed sheep reared in highland or lowland: Fatty acids and volatile compounds

Abstract

The study was conducted on the determination of fatty acids and volatile compounds of adipose tissues (perirenal, caul and tail) from different ram breeds (Akkaraman and Morkaraman) reared in highland or lowland. The tail fats of the both breeds on lowland or highland had cis9-C18:1 as the major fatty acid, perirenal fat had C18:0 and caul fat had both C18:0 and cis9-C18:1. Grazing on the lowland enhanced total trans- fatty acid. The present study showed that the lowest n-6/n-3 ratio was obtained for perirenal fat from highland, irrespectively of breed. This may be considerable, in terms of nutrition. Ethenylbenzene was principal volatile compound identified in all adipose tissues, with dominance in Morkaraman on lowland. Among adipose tissues, perirenal tissues of Morkaraman and Akkaraman on highland had 2-phytene and trans,trans2,4-heptadienal in highest levels, respectively. All the adipose tissues from lowland with high ethenylbenzene, especially in Morkaraman, were separated from those in highland. These VCs may be diet traces, depending on breed.