Supplementation of selenium and vitamin E in diets for pacu (Piaractus mesopotamicus): Effect on performance, body yields and lipid stability

Abstract

Current study evaluates the supplementation of selenium and vitamin E in the diet on performance, body yields and lipid stability of pacu. Seven hundred and twenty juveniles were distributed in 36 cages installed in a masonry tank. During 100 days, the animals were fed on diets supplemented with four selenium levels (0, 1, 2 and 4 mg/kg), combined with three levels of vitamin E (0, 100 and 200 mg/kg) in a 4x3 factorial arrangement. Selenium combined with vitamin E levels did not affect (P>0.05) growth and body yield of pacu. The interaction between levels of selenium and vitamin E did not influence (P>0.05) the lipid stability of main trunks. When the levels of vitamin E only are evaluated, 200 mg vitamin E/kg diet decreases lipid oxidation in 90 and 120 days of storage. The combination of 0 Se + 0 vitamin E / kg diet was influenced by storage time, and the highest rate of lipid oxidation was observed with 120 days of storage. Level 1 mg selenium + 200 mg vitamin E/kg in the diet of the pacu decreased meat lipid oxidation after 90 days of storage under freezing, coupled to the maintenance of performance and body yields.

Exigências nutricionais para bagres nativos do Brasil: uma revisão

“…No entanto, eles são necessários visto que a falta ou excesso de minerais e vitaminas podem prejudicar a saúde e o crescimento dos peixes (NRC, 2011). Além de já ser conhecido o fato de haver antagonismo e sinergismo na absorção destes nutrientes, onde a falta ou excesso de um pode limitar a absorção do outro (Elenice et al, 2016). Dentre os poucos trabalhos existentes nesse segmento para o jundiá, estudou-se a suplementação de selênio (Piedras et al, 2005) e cálcio (Copatti et al, 2005) nas dietas desses animais.…”