Abstract
An attempt was made to know whether fish waste lipid treated with mold can be utilized as a feed oil or not. The lipid from mackerel waste juice was treated with Aspergillus terreus for 18 h and the treated lipid was added into a diet containing white fish meal, and the effect of treated lipid on growth of red sea bream Chrysophrys major and feed efficiency was compared with that of nontreated lipid and pollack liver oil. Treatment with the mold decreased POV and TBA value of lipid (NTL) from waste juice and increased ω3 HUFA content. The growth and feed efficiency in red sea bream fed on the treated lipid (TL) were significantly high as compared with those of fish fed on the nontreated lipid (NTL), and were similar to the fish fed on pollack liver oil (PLO).
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