Influence of dietary levels of lipid and vitamin E on growth and resistance of Nile tilapia to Streptococcus iniae challenge

A study was conducted to determine the effect of dietary levels of lipid and vitamin E on growth performance, immune responses and resistance of Nile tilapia to Streptococcus iniae challenge. A basal purified diet (35% protein and 3.4 kcal DE/g) supplemented with 6, 10 and 14% of 1:1 mixture of corn oil and menhaden fish oil was each supplemented with 50, 100 and 200 mg vitamin E/kg. Each diet was fed to Nile tilapia in triplicate aquaria for 12...