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International Journal of Pharmacology
Year: 2014  |  Volume: 10  |  Issue: 3  |  Page No.: 160 - 167

Effects of Dietary Nano-Selenium on Tissue Selenium Deposition, Antioxidant Status and Immune Functions in Layer Chicks

P. Mohapatra, R.K. Swain, S.K. Mishra, T. Behera, P. Swain, S.S. Mishra, N.C. Behura, S.C. Sabat, K. Sethy, K. Dhama and P. Jayasankar    

Abstract: Comparative study on the effect of nano selenium (nano-Se) and sodium selenite on the growth, bioavailability, antioxidative activities, hematological and biochemical parameters, cellular and humoral immunity was done in layer chicks upto 8th week post feeding. The results showed significant differences (p<0.05) in relative weight gain and final body weight of the nano-Se treated groups upto a dose of 0.3 mg kg-1 of diet as compared to sodium selenite and control groups. However, further increase in dietary nano-Se content in feed had negative effect on weight and Relative Gain Rate (RGR). Survival rate and Feed Conversion Ratio (FCR) were not affected by dietary treatments. Chicks fed with both nano-Se and sodium selenite showed higher (p<0.05) Se content in different tissues (breast muscle, liver, kidney, pancreas, serum and feathers). However, highest value (p<0.05) of Se content in breast muscle and liver was observed in nano-Se treated groups. Selenium concentrations in serum, liver and breast muscle increased linearly and quadratically (p<0.05) as dietary Se level increased for all Se sources but its magnitude was substantially greater (p<0.05) when nano-Se was fed. Glutathione peroxidase (GSH-Px), erythrocyte catalase (CAT) and superoxide dismutase (SOD) activities were significantly different (p<0.05) in all treated groups than control. Dietary nano-Se also increased several serum biochemical and haematological parameters. In addition, it significantly increased both cellular and humoral immunity in layer chicks after 8th weeks of post feeding. In conclusion, dietary administration of nano-Se was found superior than that of inorganic sodium selenite in various aspects in layer chicks. Further extensive study for exploring absorption mechanisms, metabolic pathways, ideal dose/form of nano-Se is suggested for optimum utilization of nano-material based application of Se feeding in poultry.

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