THE EFFICACY OF DICLAZURIL IN FLOOR-MANAGED REPLACEMENT CHICKENS

Russian poultry farming is currently developing at a fast pace. At the same time, parasitic diseases of chickens are widespread and cause great economic damage to the industry. One of these pathologies is avian eimeriosis, which is caused by a protozoan parasite and is considered one of the main threats to poultry farming. On modern poultry farms, replacement chickens are kept on the floor, which leads to infection with coccidia. To prevent the infection development, it is necessary to take a complex of therapeutic and preventive measures using effective anticoccidial drugs. The research purpose was to study the efficacy of Diclazuril in floormanaged replacement chickens. The experiment was conducted in two poultry buildings (n=12,000 birds each). The drug was administered to the chickens from poultry building 1 with drinking water at a dose of 2 mL/L of water for 48 hours on days 9–10, 16–17, 23–24, 37–38, and 51–52. In poultry building 2, Amprolium was prescribed to all the poultry. Eimeria tenella, E. acervulina and E. maxima were found on the farm. The reduced prevalence (up to 5%) and intensity (up to 1.6 thousand specimens) of coccidia infection had a beneficial effect on safety and a body weight gain of the chickens by day 60 and led to lower feed costs. The results of the conducted studies showed that the Diclazuril efficacy was 90.0%.