Impact of replacing fish meal by a mixture of different plant protein sources on the growth performance in Nile Tilapia (Oreochromis niloticus L.) diets.

A Al-Thobaiti,K Al-Ghanim,S Mahboob,Z Ahmed,E M Suliman

doi:10.1590/1519-6984.172230

A Al-Thobaiti, K Al-Ghanim + Show 3 more

Open Access

https://doi.org/10.1590/1519-6984.172230

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Abstract

The present study aimed to assess the appropriate level of replacement of fish meal (FM) with alternative plant sources in the feed fed to Oreochromis niloticus to evaluate the growth performance. Three isoproteinious (40% crude protein) diets were prepared from different ingredients viz., fish meal, corn gluten meal, wheat gluten meal, and bagasse kenna meal. O. niloticus showed a maximum increase in weight as 9.70, 11.09, 8.53 and 8.32 g during the 2nd, 2nd, 3rd and 2nd fortnight with feeding treatment A, B, C and D, respectively. The growth performance of the fish in terms of weight gain, specific growth rate, feed conversion ratio and protein efficiency ratio were found to be significantly (P < 0.05) higher in the fish fed with 20% replacement of fishmeal in diet B. The worst growth performance was observed in fish fed with commercial diet, designated as diet D. It was concluded that the fish meal can be replaced up to 20 percent with other plant protein sources without any negative impact on fish health. The replacement of fish meal with local plant sources (corn gluten meal, wheat gluten meal, soybean meal and bagasse kenna mix) will not only be beneficial to achieve better growth performance in O. niloticus, it will be a value addition as well.

Highlights

The intensification of tilapia in Saudi Arabia has made it necessary for the fish culturists to develop balanced and cost effective diet for use in the aquaculture industry
An initial average body weight of Oreochromis niloticus was recorded as 41.05±2.45g at the beginning of the experiment (Table 1)
O. niloticus performed better when fed with diet B in which 20% of the fish meal (FM) was replaced with protein from corn gluten meal, wheat gluten meal, bagasse kenna meal and maize gluten

Summary

Introduction

The intensification of tilapia in Saudi Arabia has made it necessary for the fish culturists to develop balanced and cost effective diet for use in the aquaculture industry. Fish meal is the major constituents of feed. Fish meal is the preferred component of fish feed due to its balanced amino acid composition, palatability and growth potential. An increase in the cost of fish meal has forced

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