Evaluation of the nutritional quality of co-products from the nut industry, algae and an invertebrate meal for rainbow trout, Oncorhynchus mykiss

摘要: Abstract The static supply and increasing demand for fishmeal has created a need to evaluate variety of alternate proteins. Many species algae are being grown as potential source bio-fuels, mussel meals have been shown increase feed intake. tree nut industry is based primarily on whole nuts with production totaling ~ 1,081,000 tons in California during 2010. A portion this does not meet criteria certification must be sold “non-human uses”. Evaluation ingredients included three types experiments rainbow trout: fry screening study, digestibility growth study. First feeding trout were fed control diet containing 45% the test diets contained 5% remainder protein replaced by ingredients. Trout gained between 636 1331% their initial weight after 6 weeks. pistachio almond much diet, but algae's meal grew slower dropped from further evaluation. Apparent coefficients (ADCs) crude protein, lipid, amino acids determined meals, fishmeal, whey soy concentrate (SPC) comparison. Almond had ADCs fat similar phosphorus ADC was 27% compared 40% fishmeal. In final an average 20 g one ten 12 weeks. There two series diets; either 50% or 100% meal, SPC meal. all gains equivalent (753%) except partial replacement (614%). When fish (648%) same which greater gain 830%. These studies demonstrate that palatable, digestible, support high levels whether replacing SPC.