Effects of Se nanoparticles supplementation on growth performance, hematological parameters and nutrient digestibility of Labeo rohita fingerling fed sunflower meal based diet

Efeitos da suplementação de nanopartículas de Se no desempenho de crescimento, parâmetros hematológicos e digestibilidade de nutrientes da dieta baseada em farinha de girassol alimentada com alevinos de Labeo rohita

Abstract

The aim of the present study is to assess the effects of selenium nanoparticles on the growth, hematology and nutrients digestibility of Labeorohita fingerlings. Fingerlings were fed with seven isocaloric sunflower meal-based diet supplemented with different concentrations of nanoparticles naming T₁ to T₇ (0, 0.5, 1, 1.5, 2, 2.5, and 3 mg/kg), with 5% wet body weight while chromic oxide was used as an indigestible marker. After experimentation for 90 days T₃ treated group (1mg/kg ^-1Se-nano level) showed the best result in hematological parameters (WBC’s 7.97 ×10³mm^-3, RBC’s 2.98 ×10⁶ mm^-3 and Platelet count 67), nutrient digestibility (crude protein: 74%, ether extract: 76%, gross energy: 70%) and growth performance (weight gain 13.24 g, weight gain% 198, feed conversion ratio 1.5, survival rate 100%) as compared to the other treatment groups. Specific growth rates were found significantly higher in T₅ than in other groups. The present study indicated positive effect of 1 mg/kg Se-nanoparticles on growth advancement, hematological parameters, and nutrients digestibility of L. rohita fingerlings.

Keyword:
selenium nanoparticle; hematology; nutrients digestibility; L. rohita; growth