پاسخ خصوصیات بافت شناسی دوازدهه، اسیدیته و جمعیت میکروبی دستگاه گوارش جوجه های گوشتی به نانو ذرات نقره پوششی زئولیت

This experiment was conducted to evaluate the Response of duodenum histomorphometric characteristics, pH and microbial population of alimentary canal to silver nanoparticles coated on zeolite with ۳۷۵ Cobb ۵۰۰ broiler chickens in a completely randomized design with ۵ treatments and ۵ replicates and ۱۵ birds to each replicate. The examination treatments were: ۱) control diet (C) ۲) control diet supplemented with ۱% zeolite (Z) (۳, ۴, and ۵) control diet supplemented with ۱% zeolite coated with ۰.۲۵% (NS۲۵), ۰.۵% (NS۵۰) and ۰.۷۵% (NS۷۵) nanosilver. group NS۵۰ increased villi surface area compared with the control treatment and group NS۲۵ (P<۰.۰۵). On d ۴۲, groups NS۲۵ and NS۵۰ increased crop lactobacillus population compared with control treatment and group Z (P<۰.۰۵). The use of all treatments (Z, NS۲۵, NS۵۰ and NS۷۵) decreased ceca coliforms compared with the control treatment (P<۰.۰۵). Also, the all of treatments decreased crop pH compared with the control treatment (P<۰.۰۵). Groups NS۵۰ and NS۷۵ decreased ceca pH compared with the control treatment (P<۰.۰۵). In conclusion, the results of this study showed that silver nanoparticles coated on zeolite decreased pH and coliforms Harmful bacteria population and increased lactobacillus Beneficial bacteria and the end increased villi surface area of broiler chickens and it can be considered as a growth and health promoters.

Keywords:

Coliforms , PH , Silver nanoparticles , Villi surface area , Zeolite