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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Long-term exposure of Pacu (Piaractus mesopotamicus) fish to dietary aflatoxin B-1: residues in tissues and performance

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Author(s):
Michelin, E. C. [1] ; Bedoya-Serna, C. M. [1] ; Carrion, L. C. S. [1] ; Godoy, S. H. S. [1] ; Baldin, J. C. [1] ; Lima, C. G. [2] ; Yasui, G. S. [3] ; Rottinghaus, G. E. [4] ; Sousa, R. L. M. [1] ; Fernandes, A. M. [1]
Total Authors: 10
Affiliation:
[1] Univ Sao Paulo FZEA USP, Fac Zootecnia & Engn Alimentos, Dept Med Vet, Av Duque de Caxias Norte 225, BR-13635900 Pirassununga, SP - Brazil
[2] Univ Sao Paulo FZEA USP, Fac Zootecnia & Engn Alimentos, Dept Ciencias Basicas, Av Duque de Caxias Norte 225, BR-13635900 Pirassununga, SP - Brazil
[3] Inst Chico Mendes Conservacao Biodiversidade ICMB, Rodovia SP-201, Km 6-5, BR-13630970 Pirassununga, SP - Brazil
[4] Univ Missouri, Coll Vet Med, Vet Med Diagnost Lab, 1600 East Rollins St, Columbia, MO 65211 - USA
Total Affiliations: 4
Document type: Journal article
Source: WORLD MYCOTOXIN JOURNAL; v. 14, n. 3, SI, p. 411-419, 2021.
Web of Science Citations: 1
Abstract

The objective of this work was to evaluate the aflatoxins residues on tissues of Pacu (Piaractus mesopotamicus) fish chronically exposed to dietary aflatoxins, also evaluating the effects on fish performance. Aflatoxins were incorporated into the extruded fish feed and the concentrations were confirmed by high performance liquid chromatography (HPLC). The experimental design comprised the following treatments: Control - feed without toxin; Treatment A: feed + 10 mu g aflatoxin B-1 (AFB(1))/kg; Treatment B: feed + 20 mu g AFB(1)/kg and Treatment C: feed + 50 mu g AFB(1)/kg. Pacu juvenile were allocated in tanks with density of one fish per litter. The experiment lasted 180 days with monthly sampling, and approximately ten fish per treatment were used to compose a sample. Biometric surveys were performed every 30 days, including standard weight and length. Aflatoxins were detected and quantified in fish muscle and liver by HPLC, using immunoafinity columns. Results showed AFB(1) deposition in the liver throughout the experiment in all treatments, but only treatment C differed significantly (P<0.05) from the others after 150 days, while in muscle there was low residual deposition. Long-term exposed fish had negative influence in weight and length. The higher mortality was observed in treatment C. Although there were AFB(1) residues at low levels in liver and only a slight amount in fish muscle, it should be noted that accumulation is possible in the Pacu species. The diets contaminated with AFB(1) negatively interfered in weight and length of fish when compared to control. Therefore, it can be concluded that long- term exposure of Pacu to dietary AFB(1) can cause losses to producers. (AU)

FAPESP's process: 13/23556-4 - Evaluation of aflatoxins transfer from feed to commercial species of fish and occurrence of aflatoxins in fish farming from State of São Paulo
Grantee:Andrezza Maria Fernandes
Support Opportunities: Regular Research Grants