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Evaluation of digestive enzymes of dourado (Salminus brasiliensis) fed diets with increasing levels of fish meal replacement by soybean meal and soy protein concentrate

Grant number: 14/10983-4
Support type:Scholarships in Brazil - Scientific Initiation
Effective date (Start): August 01, 2014
Effective date (End): January 31, 2015
Field of knowledge:Agronomical Sciences - Fishery Resources and Fishery Engineering - Aquaculture
Principal researcher:José Eurico Possebon Cyrino
Grantee:Letícia Pacheco Inoue
Home Institution: Escola Superior de Agricultura Luiz de Queiroz (ESALQ). Universidade de São Paulo (USP). Piracicaba , SP, Brazil


The replacement of fishmeal (FM), by crop residues such as soybean meal (SBM) and soy protein compound (SPC), is becoming more intense due to the stagnation of the fishing market. This replacement is done primarily by those possess a competitive price, they are easy to purchase and had low pollution potential. However, these ingredients may contain high levels of anti-nutritional factors (ANF), which lead to serious consequences for fish, such as morphological changes in the intestine of the animal and negatively affect the enzymatic function, which causes damage to the digestion and absorption of ingested nutrients. This project aims to evaluate the activity of amylase, protease and lipase digestive tract gold (Salminus brasiliensis), fed with increasing levels (0%, 20%, 40%, 60%, 80% and 100%) of protein replacement stemmed from FM, SBM and the SPC.

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