Influence of levels and forms of selenium associated with levels of vitamins C and E on the performance, yield and composition of tilapia fillet

The objective of this study was to evaluate the influence of vitamin C (VC), vitamin E (VE), and two selenium sources on the performance, yield, and composition of Nile tilapia fillet. The experiment was conducted in a completely randomized design consisting of six treatments with the addition of 100, 200, and 400 mg kg-1 VC and VE and 0.1, 0.2, and 0.4 of two sources of selenium. Each treatment had five replicates of 30 fish each. The diet with 200 mg kg-1 VC and VE + 0.2 mg.k-1 organic selenium resulted in weight gain, length gain, and feed conversion ratio similar to that of the treatment with 400 mg kg-1 VC and VE + 0.4 mg kg-1 organic or inorganic selenium. The addition of organic selenium to the diet improved the weight gain and feed conversion ratio in comparison with the addition of inorganic selenium. The diet with 0.2 mg kg-1 organic selenium showed glutathione peroxidase level equal to the diet with 0.4 mg kg-1 of inorganic selenium. Carcass and fillet yields were not affected by treatments; however, there was treatment effect on the fillet's chemical composition.

Bibliographic Details

Main Authors:	Fonseca,Sthelio Braga da, Silva,José Humberto Vilar da, Beltrão Filho,Edvaldo Mesquita, Mendes,Paulo de Paula, Fernandes,João Batista Kochenborger, Amancio,Alda Lúcia Lima, Jordão Filho,José, Lacerda,Patrícia Barbosa de, Silva,Francisca Rodrigues Pereira da
Format:	Digital revista
Language:	English
Published:	Sociedade Brasileira de Ciência e Tecnologia de Alimentos 2013
Online Access:	http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612013000500017
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