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Protein has historically been the more expensive macronutrient in aquafeeds. In consideration of this, the implementation of high energy diets for increased protein utilisation is common in modern day aquafeed formulations, evoking what is widely coined as the “protein sparing effect”. However, market forces are changing the cost and availability of raw materials, and oils are now as expensive, if...
An 8-week growth trial was conducted to determine the effects of dietary protein and lipid levels on body and plasma biochemical composition and gene expression in liver of hybrid snakehead (Channa maculata ♀×Channa argus ♂) fingerlings. Ten experimental diets were formulated to contain 34%, 40%, 46%, 52% or 57% dietary crude protein with either 6.5% or 12% crude lipid levels.At the end of the experiment,...
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