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Abstract The present study was conducted to evaluate the effect of dietary linoleic acid/linolenic acid (LA/LNA) ratio for Nile tilapia (Oreochromis niloticus) breeding females. Four isonitrogenous (38% protein) and isolipidic… Click to show full abstract
Abstract The present study was conducted to evaluate the effect of dietary linoleic acid/linolenic acid (LA/LNA) ratio for Nile tilapia (Oreochromis niloticus) breeding females. Four isonitrogenous (38% protein) and isolipidic diets were formulated to contain different dietary LA/LNA ratios (20.1; 4.5; 3.9 and 0.7) by increasing of linseed oil at the expense of corn oil. 96 fishes were stocked in twelve 250-L each tank and their reproductive performance assessed over 105 days. Reproductive and growth performances, fatty acid composition, total lipids in eggs, plasma profile of lipoproteins and estradiol and expression of steroidogenic genes on ovaries were examined. At the end of the experiment, fish fed the 3.9 and 0.7 LA/LNA diets produced higher number of eggs (p 0.05). However, higher levels of cholesterol were observed in fish fed 4.5 and 3.9 LA/LNA diets (p
Journal Title: Aquaculture
Year Published: 2020
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