Seasonal variations in lipid composition of Spanish wild rabbit (Oryctolagus cuniculus) meat
1991
Cambero, M.I. | Hoz, L. de la | Sanz, B. | Ordonez, J.A.
Four batches of wild rabbit (Oryctolagus cuniculus: winter, spring, summer and autumn) were caught at the end of the respective season of the year. A study of the meat chemical composition of these animals was carried out. The classes and amounts of total, apolar and polar lipid fractions, and their fatty acids, have been extensively studied. The total, apolar and polar lipid contents from the muscle of the four batches ranged from 37 to 14, 30.1 to 8.4 and 9.0 to 4.8 g kg-1 FW respectively. Triglycerides accounted for more than 59% of the apolar lipids, and phosphatidylcholine and phosphatidylethanolamine were the major phospholipids (> 44% and >35% of total phospholipids, respectively). Almost always, 16:0, 18:0, 18:1 and 18:2 were the more abundant fatty acids of the total lipid fraction. Many seasonal differences may be observed in the fatty acid composition of total and apolar lipid fractions which are obviously related to the kinds of feed available in each season. One of the most significant differences is in 18:1 concentration. This fatty acid accounted for more than 50% in the apolar lipids from rabbits caught in autumn whereas the same fatty acid never reached 30% in other seasons. On the contrary, 18:2 and 20:0 showed a lower concentration in the autumn batch by comparison with those of the other seasons.
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