Liver retention of fat and of fatty acids in cod (Gadus morhua) fed different oils
1986; Elsevier BV; Volume: 59; Issue: 3-4 Linguagem: Inglês
10.1016/0044-8486(86)90003-7
ISSN1873-5622
AutoresØyvind Lie, Einar Lied, Georg Lambertsen,
Tópico(s)Fatty Acid Research and Health
ResumoDuplicate groups of cod were fed, for 8 weeks, diets in which 48% of the available energy came from either cod liver oil, Greenland halibut oil or peanut oil. The hepatosomatic index of the fish increased from 9.5% to an average of 13%, and the liver fat content from 55% to 67–70%. The average liver retention of the absorbed fat was 60%. Corresponding fatty acid retentions were calculated for most major fatty acids, showing a general non-specific retention. Exceptions were increased values for 16:0, 18:0 and 18:1, assumed from de novo synthesis, and decreased retentions for 14:0, 22:1 and 18:4 fatty acids. The fatty acid composition of the dietary fat had a strong influence on the composition of liver triglycerides, which constitute the main fat depot in cod, and also affected the composition of polar lipid fatty acids in liver and muscle.
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