Aquaculture Studies
2020, Vol 20, Num, 1 (Pages: 29-35)
Fatty Acid Composition of Fillets of African Catfish, Clarias gariepinus Fed with Various Oil-Based Diets
Mmandu Uwem Effiong 1 ,Clement Ameh Yaro 1
1 Department of Animal and Environmental Biology, University of Uyo, Uyo, Akwa Ibom State, Nigeria
DOI :
10.4194/2618-6381-v20_1_04
Viewed :
7887
-
Downloaded :
3421
The study evaluated effects of diets containing different vegetable oil resources on
growth performances, body compositions and fatty acid profile of Clarias gariepinus.
The oils were incorporated at 7% level of the diet. Fingerlings were randomly stocked
at 20 fish per floating net-hapa (1m3) and fed the experimental diets for 12 weeks.
Fatty acid methyl esters and proximate compositions were determined. Growth
performances revealed that fish fed palm oil-based diets yielded best. Fatty acids
profile revealed that lauric, myristic and palmitic acids were the main saturated fatty
acids while oleic acid was the main monounsaturated fatty acids. High levels of
docosahexaenoic acid (DHA) (22:6n-3) and arachidonic acid (ARA) (20:4n-6) were
observed in muscle lipid of fish fed with sunflower oil diet. The main contributor of
saturated fatty acids was lauric with the highest amount (82.57%) reflected in fish fed
coconut oil diet. The highest (P<0.05) monounsaturated fatty acids (73.55%) was in
fish fed olive oil diet. Proximate analysis revealed catfish belongs to high-protein (15 -
20%) and high-oil (>5%) category. The ω-3/ω-6 ratios obtained in muscle fatty acids of
catfish fed olive, sunflower and sesame-oil diets were within the recommended daily
intake of EPA and DHA for normal human health.
Keywords :
Catfish, Protein, Moisture lipid, Essential fatty acids