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Hematological and biochemical responses of pirarucu (Arapaima gigas, Arapaimidae) fed with diets containing a glucomannan product derived from yeast and algae

Authors :
HOSHINO, M. D. F. G.
MARINHO, R. das G. B.
PEREIRA, D. F.
YOSHIOKA, E. T. O.
TAVARES-DIAS, M.
OZORIO, R. O. de A.
RODRIGUEZ, A. F. R.
RIBEIRO, R. A.
FARIA, F. S. E. D. V. de
MARIA DANIELLE FIGUEIREDO GUIMARÃES HOSHINO, Unifap
RENATA DAS GRAÇAS BARBOSA MARINHO, Pescap
DIOGLE FARIAS PEREIRA, Ueap
ELIANE TIE OBA YOSHIOKA, CPAF-AP
MARCOS TAVARES-DIAS, CPAF-AP
RODRIGO OTAVIO DE ALMEIDA OZORIO, CIIMAR
ANSELMO FORTUNATO RUIZ RODRIGUEZ, UFAC
RICARDO AMARAL RIBEIRO, UFAC
FERNANDO SÉRGIO ESCÓCIO DRUMMOND VIANA DE FARIA, UFAC.
Source :
Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA-Alice), Empresa Brasileira de Pesquisa Agropecuária (Embrapa), instacron:EMBRAPA
Publication Year :
2017

Abstract

The hematological and biochemical responses of pirarucu fingerlings (Arapaima gigas) fed with diets containing different concentrations of a glucomannan product derived from yeast and algae were evaluated in order to ascertain the effect of these diets on fish physiology. Four treatments were conducted, with three replications, with 12 fish in each tank. The product evaluated (MycosorbA+®) was incorporated into the commercial diet, at four concentrations: 0, 1, 2 and 4 g.kg-1, called M0%, M0.1%, M0.2% and M0.4%, respectively. After 45 days of feeding, blood samples from six fish in each replicate were collected to perform the analyses. Their weight and length were determined to calculate the condition factor and weight gain, but no differences (P > 0.05) were observed among the treatments. No changes to the hematocrit, hemoglobin or erythrocyte levels or to the hematimetric indices of the pirarucus were observed. The glucose and triglyceride levels of the pirarucus in the M0.1% and M0.2% groups were significantly lower than those of the M0% group. The M0.2% group showed higher albumin levels (P < 0.05) than M0% and M0.4%. The M0.4% group showed a total cholesterol level that was significantly higher than in all other treatments. MycosorbA+® contributed towards increasing the levels of defense cells in A. gigas. It would be possible to use this product at concentrations of between 0.1% and 0.2%, given that they increase the levels of some defense cells and plasma albumin concentrations, without changes to hematological parameters, cholesterol and triglyceride plasma levels or condition factor.

Details

Language :
English
Database :
OpenAIRE
Journal :
Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA-Alice), Empresa Brasileira de Pesquisa Agropecuária (Embrapa), instacron:EMBRAPA
Accession number :
edsair.od......3056..3ab15881ff3b46185f80bb8989692263