Title:	Partial substitution of fishmeal with soybean protein-based diets for dourado Salminus brasiliensis.
Authors:	CORREA, R. de O. AGUILAR, F. A. A. CRUZ, T. M. P. da SABIONI, R. E. CYRINO, J. E. P.
Affiliation:	ROSELANY DE OLIVEIRA CORREA, CPATU Fredy Armando Aguilar Aguilar, Fundación Universitaria Agraria de Colombia Thaline Maira Pachelli da Cruz, USP/ESALQ Rafael Estevan Sabioni, USP/ESALQ José Eurico Possebon Cyrino, USP/ESALQ.
Date Issued:	2020
Citation:	Scientia Agricola, v. 77, n. 2, e20180046, 2020.
Description:	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.
Thesagro:	Aquicultura Nutrição Proteína
NAL Thesaurus:	Salminus brasiliensis Enteritis Aquaculture Protein sources Nutrition
DOI:	10.1590/1678-992X-2018-0046
Type of Material:	Artigo de periódico
Access:	openAccess
Appears in Collections:	Artigo em periódico indexado (CPATU)