Effects of organic selenium on thrombocytes and parasite infestation in nile tilapia juveniles

Document Type : Short communication

Authors

1 Embrapa Tabuleiros Costeiros, Avenida Beira Mar, 3250, Caixa Postal 44, CEP 49.025-040 Aracaju, SE, Brasil

2 VB Alimentos Industria e Comércio Ltda, Rua jurema, 692, Novo Vale, CEP 78.820-000, Jaciara, MT, Brasil

3 Universidade Federal Fluminense, Faculdade de Veterinária, Departamento de Zootecnia e Desenvolvimento Agrossocioambiental Sustentável. Rua Vital Brasil Filho, 64, Vital Brasil, CEP 24.230-340 Niterói, RJ, Brasil

4 Universidade Estadual Paulista, Faculdade de Ciências Agrária e Veterinárias de Jaboticabal, Departamento de Fitossanidade, Via de Acesso Paulo Donato Castellane, s/no, Nova Aparecida, CEP 14.870-000 Jaboticabal, SP, Brasil

5 Universidade Federal do Pará, Rua Augusto Corrêa, n 1, Guamá, CEP 66075-110. Belém-PA-Brasil

6 Universidade Tiradentes, Av. Murilo Dantas, 300, Farolândia, CEP 49032-490. Aracaju – SE. Brasil

Abstract

The knowledge of fish mineral requirements, such as selenium, is important to promote the growth and health status for fish in captivity, but excess or deficiency must be avoided. Therefore, this study evaluated the growth performance, hematology and the parasite load of Nile tilapia (Oreochromis niloticus) supplemented with organic selenium (0.0; 0.25; 0.5; 1.0 and 1.5 mg/Kg). The increased levels of selenium did not affect significantly (p<0.05) the growth performance of tilapia. However, the increases of thrombocytes and parasite load are proportional to the increases of selenium levels. Unlike expected, supplemented diets with selenium did not benefit growth performance and supplementation of 1.5 mg/kg caused deleterious effects on the health of tilapia.

Keywords

International Aquatic Research
Volume 12, Issue 2
June 2020
Pages 127-132

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