OMER ABDELHADI, SALIH BABIKER, J.F. HOCQUETTE
University of Kordofan, Animal Production, Sudan
University of Khartoum, Fac. of Animal Production, Sudan
INRA, Herbivore Research Unit, France
The present work was designed to study the effect of slaughter season on fatty acids composition of the desert camel Longissimus thoracis (LT) muscle. Desert camel calves (n=30) were fattened by local camel herders in Sudan and slaughtered in different seasons of the year: winter, summer and autumn, ten camels each. The results showed that the average of total lipids was 11.7 g/ 100 g fresh muscle. No differences among seasons were observed in fatty acids composition. Slaughter season did not influence Myristic acid (14:0) which was 5.2% (average of three seasons). Camel LT muscle contained 52.2% SFA, 35.8% MUFA, 11.6 PUFA and 0.5% CLA, respectively. The total MUFA was higher in summer season as compared to other seasons. Similar results were obtained, the ratio of 18:2 n-6/ 18:3 n-3, n-6/ n-3 as well as UFA/ SFA were significantly influenced by slaughter season (). The concentration of conjugated linoleic acid trans11, cis9 18:2 (CLA) was 0.5%, however no differences among seasons were observed. CLA content and the percentages of trans11, cis 9 18:2 isomer are relatively high. Slaughter season significantly affected the n-6/ n-3 ratio of camel LT muscle (). This ratio was within the recommended values for the human diet which indicated that camel LT muscle has a high nutritional value throughout the year. The predominant fatty acids in camel LT muscle were Palmitic acid (16:0) and stearic acid (18:0) as saturated fatty acids (SFA), 18:19+10 cis and 18:111 cis as monounsaturated fatty acids (MUFA) and LA; 18:2n-6 as polyunsaturated fatty acids (PUFA) indicating the high quality of fatty acids.
Keywords: Desert camel, fatty acids, lipids, slaughter season