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Dryad

Data and code for: Microalgae-blend tilapia feed eliminates fishmeal and fish oil, improves growth, and is cost viable

Abstract

Aquafeed manufacturers have reduced, but not fully eliminated, fishmeal and fish oil and are seeking cost competitive replacements. We combined two commercially available microalgae, to produce a high-performing fish-free feed for Nile tilapia (Oreochromis niloticus) —the world’s second largest group of farmed fish. We substituted protein-rich defatted biomass of Nannochloropsis oculata (leftover after oil extraction for nutraceuticals) for fishmeal and whole cells of docosahexaenoic acid (DHA)-rich Schizochytrium sp. as substitute for fish oil. Here, we provide the datasets and code that we used to estimate the price of fish-free experimental and reference diets of tilpia in the Scientific Reports manuscript entitled, "Microalgae-blend tilapia feed eliminates fishmeal and fish oil, improves growth, and is cost viable". We include the Rstudio and supporting .csv files for a hedonic analysis of defatted N. oculata meal and whole-cell Schizochytrium sp., non-parametric bootstraps to estimate the median and 95% confidence intervals of commodity and market prices for the formulated tilapia feed ingredients, and for Fig. 2 in the manuscript.