Document Type : Research Paper
Authors
1
M. Sc Student, Faculty of Animal Science, Gorgan University of Agricultural Sciences and Natural Resources, Gorgan, Iran
2
Assistant Professor, Faculty of Animal Science, Gorgan University of Agricultural Sciences and Natural Resources, Gorgan, Iran
3
Assistant Professor, Nanotechnology Department, Agricultural Biotechnology Research Institute of Iran, Karaj, Iran
4
Professor, Faculty of Animal Science, Gorgan University of Agricultural Sciences and Natural Resources, Gorgan, Iran
5
Associate Professor, Faculty of Animal Science, Gorgan University of Agricultural Sciences and Natural Resources, Gorgan, Iran
6
Ph. D. Student, Faculty of Animal Science, Gorgan University of Agricultural Sciences and Natural Resources, Gorgan, Iran
Abstract
This experiment was conducted to evaluate the effect of supplementing the diet with zeolite coated with silvernanoparticles on performance, intestinal morphology characteristics and ilium microbial population of broiler chickens in a completely randomized design with 375 day-old broiler chicks with five replicates per treatment and 15 chicks per replicate.Treatments were: 1) basal diet, 2) basal diet supplemented with1% zeoliteand 3, 4, and 5) basal diet supplemented with1% zeolitecoated and 0.25%, 0.5% and 0.75% nanosilver. Results showed that dietary supplementation with 1% zeolite and all level of silver nanoparticles had better feed conversion ratio than the basal diet on d 22-42 (P<0.05). Diets supplemented with silver nanoparticles at 0.5% and 0.75% level increased villi length and villus/crypt ratio significantly compared to the basal diet (P<0.05). In comparison to the basal diet, diets supplemented with silver nanoparticles decreased crypt depth. On d 21, broiler chickens fed diets supplemented with 0.5% and 0.75% silver nanoparticles had lower coliforms bacteria population compared with basal diet and basal diet supplemented with 1% zeolite (P<0.05). In conclusion, the present results showed that zeolite coated with silvernanoparticles can improve feed conversion ratio, intestinal morphological characters and decrease coliforms population in broiler chickens and it can be considered as a growth and health promoters.
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