Title:	Growth and hematological and immunological responses of Arapaima gigas fed diets supplemented with immunostimulant based on Saccharomyces cerevisiae and subjected to handling stress.
Authors:	DIAS, M. K. R. YOSHIOKA, E. T. O. RODRIGUEZ, A. F. R. RIBEIRO, R. A. VIANA, F. S. E. D. OZÓRIO, R. O. A. TAVARES-DIAS, M.
Affiliation:	MARCIA KELLY REIS DIAS, UNIFAP. PPG em Biodiversidade Tropical; ELIANE TIE OBA YOSHIOKA, CPAF-AP; ANSELMO FORTUNATO RUIZ RODRIGUEZ, UFAC; RICARDO AMARAL RIBEIRO, UFAC; FERNANDO SÉRGIO ESCÓCIO DRUMMOND VIANA, UFAC; RODRIGO OTÁVIO ALMEIDA OZÓRIO, CIIMAR; MARCOS TAVARES DIAS, CPAF-AP.
Date Issued:	2020
Citation:	Aquaculture Reports, v. 17, p. 1-6, July 2020.
Description:	Saccharomyces cerevisiae is rich in bioactive ingredients and nutrients such as essential amino acids, peptides, cell wall carbohydrates, nucleotides and B vitamins. Diets with this immunostimulant product may offer improves in growth performance and immune of farmed fish. This study evaluated the effects of a commercial immunostimulant based on S. cerevisiae on growth performance, hematology and immunity of Arapaima gigas subjected to handling stress after 30 days of supplementation (0, 4, 6 and 8 g kg−1). Diet with 6 and 8 g kg−1 of immunostimulant increased final biomass, final length, body weight gain, daily weight gain, daily feed intake, specific growth and decreased the cholesterol levels. After handling stress, supplemented fish with 4, 6 and 8 g kg−1 of immunostimulant had increase in glucose levels and decrease in globulin levels, while supplemented fish with 4 and 6 g kg−1 had decrease in cholesterol, and supplemented fish with 4 and 8 g kg−1 in globulin levels. Protein levels decreased in supplemented fish with 4 g kg−1, while hematocrit decreased in all treatments and lymphocytes number and burst respiratory of leukocytes decreased in supplemented fish with 8 g kg−1 and submitted to handling stress. For A. gigas, since 6 to 8 g kg−1 of immunostimulant has not negative impacts on the hematological and biochemical parameters, thus such concentrations may be used as a growth promoter in A. gigas.
Thesagro:	Peixe de Água Doce Hematologia Aquicultura
NAL Thesaurus:	Aquaculture Blood Freshwater fish
Keywords:	Feed additive Aditivo alimentar
Type of Material:	Artigo de periódico
Access:	openAccess
Appears in Collections:	Artigo em periódico indexado (CPAF-AP)