Effect of adding silver nanoparticles with drinking water on some lymphatic organs and microflora in the intestinal for broiler chickens (ROSS 308)

Abstract

This study was conducted in the farm of domestic birds belonging to the Department of Animal Production, College of Agriculture, Al-Qasim Green University for the period from 21/3/2019 to 24/4/2019, Laboratory work was then conducted, where 225 chicks from broiler chicks and raised in 1x1.5 m cages, the chicks were randomly divided into five treatments and for each treatment contains three replicates, each replicate included 15 chicks. Nano-silver was used by adding it with drinking water in concentrations of (0, 20, 30, 40, 50 ppm.L-1 drinking water) for the treatments (T1, T2, T3, T4, T5), respectively. Chicks were bred in the field for 35 days. The study showed the following results: A significant superiority (P <0.05) for the T5 treatment was obtained in the weight of bursa of Fabricius compared to other treatments. It was also found that there was a significant superiority (P <0.05) for the treatments (T1, T5) in the index of the bursa of Fabricius compared to the rest of the treatments. It was also observed a significant superiority (P <0.05) for the treatments (T4, T5) in the number of beneficial bacteria (Lactobacilli) in the Jejunum compared to the rest of the treatments. The excelling of the T5 treatment continued in the number of beneficial bacteria in the ileum compared to other studied treatments. As for the harmful bacteria (E.coli), the T1 treatment was significantly (T <0.01) excelled in Jejunum and ileum over other treatments at the age of 14 days from birds’ age and at the age of 35 days from birds’ age. The treatments (T5, T2) was significantly (P <0.01) excelled in the number of beneficial bacteria in the Jejunum. As for the harmful bacteria, the T1 treatment maintained on their superiority (P <0.01) compared to the rest of the experiment.