Practical diet with total replacement of fishmeal by soybean meal for Nile tilapia: growth performance and health effects

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Abstract

This study aimed to evaluate the growth performance and animal health in juveniles of Nile tilapia (Oreochromis niloticus) fed a practical diet with total replacement of fishmeal (FM) by soybean meal, as well the effect on survival, following pathogenic challenge with Aeromonas hydrophila. Two hundred juveniles of Nile tilapia were stored in 8 tanks (800 L). The experiment consisted of two treatments: a commercial diet formulated with FM (control) and a practical diet with total replacement of FM by soybean meal (SM). The variables of water quality, zootechnical and hematological parameters were measured. In addition, at the end of the experiment, the fish were submitted to a challenge with A. hydrophila. Higher cost per kg of fish was obtained in the control treatment (with FM). N retention was higher in fish fed a diet without FM, while hematological, immunological parameters and survival after the experimental challenge did not differ between treatments. It is possible to reduce dietary costs by replacing FM with SM without affecting growth performance or animal health, in addition to benefiting the environment by reducing the excretion of N in water.
Keywords: plant protein; Aeromonas hydrophila; nitrogen retention; immunology.

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Author Biography

Adolfo Jatobá, Instituto Federal Catarinense, Araquari, Santa Catarina, Brazil

Inserido no departamento de Aquicultura da Universidade Federal de Santa Catarina, atuando com manejo de peixes nativosm e camarão marinho.

Especialidade em bacteriologia aplicada á Aquicultura, como desenvolvimento e avaliação de probióticos e vacinas.

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Published

2022-03-23

How to Cite

STOCKHAUSEN, L.; VILVERT, M. P. .; DA SILVA, M. .; DARTORA, A.; KRAINZ, R.; BEATRICE FERREIRA, G. .; RAFAELA DA SILVA, L.; JATOBÁ, A. Practical diet with total replacement of fishmeal by soybean meal for Nile tilapia: growth performance and health effects. Brazilian Animal Science/ Ciência Animal Brasileira, Goiânia, v. 23, 2022. Disponível em: https://revistas.ufg.br/vet/article/view/71567. Acesso em: 21 nov. 2024.

Issue

Vol. 23 (2022): Continuous publication

Section

ZOOTECNIA

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Copyright (c) 2022 CIÊNCIA ANIMAL BRASILEIRA (Brazilian Animal Science)

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