Subklinička kokcidioza na farmama tovnih pilića

Abstract

Everyday challenges of modern poultry production are various diseases of viral, bacterial and parasitic etiology. One of the most important diseases that occurs frequently is poultry coccidiosis. According to recent literature data, a growing problem of poultry production is a subclinical form of coccidiosis, which causes great economic losses worldwide. The aim of this study was to discover the presence of subclinical infections in the flock at the right time by detecting the number of coccidia oocysts in faecal samples, in order to implement appropriate corrective measures. In this study, we analyzed faecal samples originating from 10 broiler flocks, from 10 different farms. The analyzed farms were located on the territory of Vojvodina, with a capacity of 10,000 - 20,000 chickens. A pooled faecal samples were collected each day, starting at day 21 of age of broilers, up to day 27. A total of 7 faecal samples were collected from each flock/farm, and the parasitological examination was performed by a modified McMaster flotation method. The results of our study show that coccidia oocysts were present on all ten examined farms. The highest average number of oocysts was found on farm III (231,271.4). The lowest average number of oocysts was detected on farm V (11,842.8). Between 22 and 25 days of age, the number of oocysts was increased in most of the examined farms. The obtained results show that coccidiosis continues to be one of the major challenges for modern poultry production. Despite the implementaion of preventive measures on farms, subclinical infection of broilers is a common problem that consequently leads to direct and indirect losses in production. In order to reduce the risk of subclinical coccidiosis, it is necessary to implement biosecurity measures on farms as efficiently as possible, improve washing and disinfection of facilities, rotate coccidiostats and change coccidiostatic programs.