Influence of Amino Acid Supplementations in Juvenile Yellow Perch Fed Plant Protein Combinations

Aaron J Von Eschen,Michael L Brown,Kurt Rosentrater

doi:10.4236/ojas.2019.92016

Aaron J Von Eschen, Michael L Brown + Show 1 more

Open Access

https://doi.org/10.4236/ojas.2019.92016

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Abstract

Distillers dried grains with solubles (DDGS) in combination with soy protein concentrate (SPC) with and without an essential amino acid (EAA) complex were assessed as protein alternatives in juvenile Yellow Perch Perca flavescens diets. Diets contained 5% FM, 40% SPC, and 20% or 40% DDGS each with or without EAA. No mortalities or health assessment differences were observed during the trial and all fish readily accepted the experimental diets. Diets supplemented with EAA produced greater weight gain, improved feed conversion, and apparent protein digestibility. Performance was consistently improved for fish fed diets containing amino acid supplements. Based on these results, Yellow Perch are able to utilize high levels of the plant proteins, accompanied with EAAs, as a FM replacer.

Highlights

A primary concern for aquaculture production is the development of cost-effective feeds, and is a constraining factor that hampers the rapidly growing global aquaculture industry [1] [2]
Results from this study demonstrate that Yellow Perch are able to effectively use combinations of dried grains with solubles (DDGS) and soy protein concentrate (SPC) as FM protein replacers and perform better when supplemented with essential amino acid (EAA)
Schaeffer et al [21] showed that Yellow Perch had greatest growth when fed diets containing 40% DDGS + 9.5 SBM + 24% FM, but noted that growth decreased significantly after DDGS was incorporated at 50% DDGS

Summary

Introduction

A primary concern for aquaculture production is the development of cost-effective feeds, and is a constraining factor that hampers the rapidly growing global aquaculture industry [1] [2]. Feed ingredient prices, such as fishmeal (FM) are following an increasing cost trend; FM production will likely remain static [3]. Fish meal is the traditional animal protein used in fish feeds [4] and generally accounts for the most expensive ingredient in fish diets, translating into one of the largest expenditures in aquaculture production [2] [5] [6].

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