Российский паразитологический журнал (Oct 2019)
Complex program against the coccidiosis of birds to reduce the circulation of resistant forms of Eimeria spp. on the poultry ground
Abstract
Objective of research: test the complex program using Deleghol Pro and Baikok 2.5%, which have a disastrous effect on all stages of development of the emmeries, both inside the chicken organism and in the external environment. Materials and methods: studies on the production test of a comprehensive program to control the exo- and endogenous stages of the emery were carried out from September to November 2016 in the conditions of the poultry holding “White Bird” of the Belgorod Region. To establish initial contamination, sampling of litter from 10 poultry houses after slaughter of the previous batch and scrapings from cracks and joints of the floor before processing with a 4% solution of the “Delegol Pro” preparation for disinfection of the floor and walls, up to 0.5 m from the floor at the norm Flow rate 0.5 l / m2 with 2 hours exposure. Residual contamination of environmental objects with oocysts Eimeria spp. and evaluation of the efficiency of Delegol Pro treatment against the endogenous stages of development of the eimeries was carried out on the next day after treatment by taking scrapings from different parts of the floor, from cracks, slits, and they were examined according to the combined Darling method. Sensitivity to coccidiostatics of field crops Eimeria spp., isolated from poultry litter, was established in the laboratory of VNIVIP At the second stage of the program, the efficacy of the “Baikox 2.5%” preparation was tested against the endogenous stages of development of the emery against the background of the use of the ionophore feed coccidiostatic salinomycin. At the age of 8-10 days, the total number of chickens (34 houses) was prescribed with drinking water the recommended _ _ dose of “Baikox 2.5%”. Subsequently, the chickens received feed containing salinomycin. The evaluation of therapeutic and prophylactic efficacy of this program was carried out according to the data of co-proskating studies before the appointment of “Baikox 2.5%”, then one, two, three and four weeks after drinking and finally - before the slaughter of the bird. In order to establish the degree of contamination with eimerias in the previous and experimental batches at the beginning and during the test, simultaneously with the extent of invasion, the intensity of the eimeriosis invasion was established by counting the number of oocysts in 1 g of litter (litter, scrapes) using the Mack Master chamber. Results and discussion: studies have shown that before the application of the Bayer program, the sex and litter of the investigated poultry houses were significantly contaminated with invasive elements: the Eimeria oocysts, the red chicken mite, the litter mite, the beetle hruschak, the nematode eggs - the ascaridia, the heterakis (EI 30-100% ). After disinfection with the drug “Delegol Pro”, a noticeable decrease in the content of exogenous parasites in the cracks of the floor and in the litter was established. Already in the middle of the tour, experienced poultry houses were practically free of previously existing parasites. At the end of the tour, it was recorded the appearance of a small amount of only litter mites and a low level of oocysts of the emery, necessary to maintain immunity. The appointment of “Baikox 2.5%” with drinking water for 8-10 days of life of broilers against the background of the use of fodder coccidiostatic salinomycin significantly improved the program used to combat eimeriosis, as the drug had a disastrous effect on the endogenous stages of the emery, but not only did not prevent the formation of immunity to coccidiosis, but even strengthened it. The results of the study showed that the average number of oocysts in the litter at the end of the round of the experimental batch of poultry decreased by 68.9% compared to the previous round.
