Data/hora: 10/06/2024 15:22:29

Provedor de dados: | 63
País: | Brazil
Título: | Partial substitution of fishmeal with soybean protein-based diets for dourado Salminus brasiliensis
Autores: | Correa,Roselany de Oliveira; Aguilar,Fredy Armando Aguilar; Cruz,Thaline Maira Pachelli da; Sabioni,Rafael Estevan; Cyrino,José Eurico Possebon.
Data: | 2020-01-01
Ano: | 2020
Palavras-chave: | Enteritis; Aquaculture; Protein source; Gastrointestinal tract; Nutrition.
Resumo: | ABSTRACT  Cost and environmental restrictions limit the use of fishmeal (FM) in aquafeeds and plant protein (PP) sources. Soybean by-products are important alternative; however, their antinutritional factors may reduce fish growth. This study evaluates the effect of FM substitution for PP (soybean meal and soy protein concentrate) in diets of dourado (Salminus brasiliensis), a promising species for fish farming and empirically considered highly tolerant to PP-based diets. A control diet was formulated to contain 20 % of fishmeal and 61 % of plant protein (SBM) and other five diets with decreasing FM graded levels (16 %, 12 %, 8 %, 4 %, 0 %), which were replaced by soybean protein concentrate (SPC), comprising six treatments and four replicates. Fifteen dourados (6.73 ± 0.2 g) were stocked into 200 L tanks in a recirculating system, fed with experimental diets three times a day to apparent satiation for 90 days. Growth performance, food conversion ratio, protein efficiency ratio and protein retention efficiency of fish were impaired when FM substitution exceeded 13.05 % (the broken line analysis method). Histological analysis of intestinal mucosa showed a decrease in villus height when fishmeal was totally replaced by PP, which probably impaired digestive functions of fish and reflected in a severe loss on growth performance.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162020000200400
Editor: | São Paulo - Escola Superior de Agricultura "Luiz de Queiroz"
Relação: | 10.1590/1678-992x-2018-0046
Formato: | text/html
Fonte: | Scientia Agricola  v.77 n.2 2020
Fonte: | info:eu-repo/semantics/openAccess