University of Guilan Animal Production Research 2252-0872 5 4 2017 02 19 Effect of different levels of silver nanoparticles coated with zeolite on performance, function of superoxide dismutase and glutathione peroxidase, carcass characteristics and internal organs weight of broiler chickens Effect of different levels of silver nanoparticles coated with zeolite on performance, function of superoxide dismutase and glutathione peroxidase, carcass characteristics and internal organs weight of broiler chickens 1 11 2102 FA M. Esmaili Faculty of Animal Science, Gorgan University of Agricultural Sciences and Natural Resources, Golestan, Iran. S. R. Hashemi Faculty of Animal Science, Gorgan University of Agricultural Sciences and Natural Resources, Golestan, Iran. Y. Jafari Ahangari Faculty of Animal Science, Gorgan University of Agricultural Sciences and Natural Resources, Golestan, Iran. S. Hassani Faculty of Animal Science, Gorgan University of Agricultural Sciences and Natural Resources, Golestan, Iran. A. Shabani Faculty of Animal Science, Gorgan University of Agricultural Sciences and Natural Resources, Golestan, Iran. Journal Article 2015 10 29 The aim of this study was to evaluate the effect of different levels of silver nanoparticles coated with zeolite on performance, function of superoxide dismutase and glutathione peroxidase and level of malondialdehyde of broiler chickens. Three handered seventy five 1-day old broiler chicks divided into 5 treatments with 5 replicates (15 chicks per each) and were fed with basal diet, and basal diet supplemented with 1% zeolite and basal diet supplemented with 1% zeolite coated with 0.25%, 0.5% and 0.75% nanosilver. On days 21 and 42 two birds from each replicate were randomly selected and blood sample from their wing vein were collected to determine the malondialdehyde concentration, glutathione peroxidase and superoxide dismutase function in the serum, and then birds was slaughtered and carcass weight and relative weight percentage of thigh, breast and abdominal fat were measured. The result showed that feed conversion ratio of treatments coated with 0.25 (1.78), 0.5 (1/48) and 0.75 (1.92) percent of silver nanoparticles were not different from other treatments (<em>P</em><0.05). Addition of zeolite coated with 0.5 percent of nanosilver increased function of superoxide dismutase on 21 (585 U/gHb) and 42(472.20 U/gHb) days and increase of breast muscle weight gain in 21 (50.11%) and 42 (39.19%) days (<em>P</em>>0.05). In conclusion, silver nanoparticles coated with zeolite at levels of 0.5% as feed additive in broiler diets improved oxidative enzymes concentrations and breast muscle relative weight percentage The aim of this study was to evaluate the effect of different levels of silver nanoparticles coated with zeolite on performance, function of superoxide dismutase and glutathione peroxidase and level of malondialdehyde of broiler chickens. Three handered seventy five 1-day old broiler chicks divided into 5 treatments with 5 replicates (15 chicks per each) and were fed with basal diet, and basal diet supplemented with 1% zeolite and basal diet supplemented with 1% zeolite coated with 0.25%, 0.5% and 0.75% nanosilver. On days 21 and 42 two birds from each replicate were randomly selected and blood sample from their wing vein were collected to determine the malondialdehyde concentration, glutathione peroxidase and superoxide dismutase function in the serum, and then birds was slaughtered and carcass weight and relative weight percentage of thigh, breast and abdominal fat were measured. The result showed that feed conversion ratio of treatments coated with 0.25 (1.78), 0.5 (1/48) and 0.75 (1.92) percent of silver nanoparticles were not different from other treatments (<em>P</em><0.05). Addition of zeolite coated with 0.5 percent of nanosilver increased function of superoxide dismutase on 21 (585 U/gHb) and 42(472.20 U/gHb) days and increase of breast muscle weight gain in 21 (50.11%) and 42 (39.19%) days (<em>P</em>>0.05). In conclusion, silver nanoparticles coated with zeolite at levels of 0.5% as feed additive in broiler diets improved oxidative enzymes concentrations and breast muscle relative weight percentage https://ar.guilan.ac.ir/article_2102_822d8f25397acb34c24ae1af021a73e2.pdf