Abstract

Over the years, the results of studies on the use of disinfectant chemicals to control coccidiosis have been promising, and oocysts have been shown to be resistant to commonly known disinfectants. Some iodine compounds kill oocysts, but their contact time and concentration are longer than those commonly encountered in poultry nests by oocysts. Therefore, in this study, we investigated the rate of oocyst changes around densities and drinkers at different weeks in poultry farms of Mahabad city. Due to the distribution and abundance of poultry in Mahabad region, 5 units were randomly selected and sampled at the regional level. The poultry age selected for sampling was between 1 and 6 weeks. The basis for the detection of coccidial contamination was to identify the presence of Eimeria oocysts in the poultry litter. Samples were taken from each litter of drinkers and dunkers to prepare a complete sample that indicates contamination of the entire bed with a low percentage of sampling error. Litter samples were also collected around the densities at a distance of 5 meters across the hall on both sides of the hall and were thrown into the corresponding container. For oocyst spray, 30 cc bicarbonate was added 2.5% to 5 g of feces and incubated at 28 ° C. Then the culture medium was stirred once every 12 hours and aerated with a pet paste. The results of this study showed that despite the use of anti-coccidiosis drugs, this parasite is still prevalent among broilers and is one of the major problems in farmland in the region. , Substrate including moisture, Eimeria spruce shape remains longer in the substrate and thus may be a factor for dispersal and propagation of oocysts among different farms.