Studies were conducted in private poultry farms in five economic regions of the Republic of Azerbaijan: Apsheronsky, Sheki-Zakatalsky, Lenkoran-Astarasky, Guba-Khachmazsky and Aransky. It was found that helminthocomplex of domestic chickens is represented by parasites belonging to class Nematoda, including 4 species - Ascaridia galli, Heterakis gallinarum, Syngamus trachea, Capillaria obsignata and Cestoda, represented by one species, Raillietina tetragona. Their ubiquitous distribution has been established; however, with a homogeneous taxonomic composition in economic areas, the infestation of chickens with pathogens of individual helminthic diseases varies. Ascaridia galli and Heterakis gallinarum are the dominant species. Their invasion of hens is maximum (36.8 and 35.5% prevalence) and does not have significant territorial differences. Bird infestation with nematodes C.obsignata and tapeworms Raillietina tetragona is characterized by lower prevalence rates and their pronounced variability within areas. The infestation of chickens with capillariasis and ryetinosis varies from 7.1% in Aransky district to 28.8% in Lenkoran-Astarsky district, from 5.4% to 24.8% in Apsheronsky and Guba-Khachmazsky districts. On average, it is 17.8 and 18.5% in the republic, respectively. Age peculiarities of chickens' helminth infestation are characterized by the same taxonomic spectrum of parasites and maximum infection with the causative agents of ascariasis, heterokidosis, syngamosis, capillariasis and ryetinosis in chickens aged 2.5-5 months with prevalence of 38.9; 40.8; 21.9; 19.7 and 20.9%, respectively. The incidence of these nosoforms in adult birds is much lower and amounts to 32.0; 30,8; 15,3; 16.2 and 16.0%.
Within the framework of these studies during 2014-2015, the levels of extensiveness and intensity of infection by various types of helminths were studied for three age groups of chickens from local breeds, reared in outdoor stabling conditions and walking areas of family poultry farms in mountainous (Khizi district), foothill (Khachmaz district) and lowland (Saatly district) territories. In studies carried out in these three climatic zones, intense infection of birds with helminths at 3-4 months of age, making uo withA.galli EI 62.3, H. gallinarum EI 50.8, II 1-30, R.tetragona IE 36, 6, 1-14, S.trachea EI 29.1, C.obsignata EI 17.7 %, II 1-13, in 5-7 months of age Sinqamus II 1-19, in adults Askaridia II 1-36, were recorded in foothill areas. A low level of extensiveness and intensity of invasion of infected birds was found in lowland areas, and a medium level in foothill areas. One of the main reasons for this is low temperature and high relative humidity in mountainous areas, high air temperature and low relative humidity in low-lying areas and a suitable air temperature and relative humidity in foothill areas for the development of helminth eggs in the external environment.
БАЙРАМОВ Сахман Юсиф оглы, Азербайджанский ветеринарный научно-исследовательский институт Проведены исследования инвазированности гельминтами различных возрастных групп кур. Выявлено, что наиболее распространенными инвазиями являются Аscaridia galli, Heterakis gallinarum, Syngamus trachea, Raillietina tetragona и Capillaria obsignata. Самые высокие показатели интенсив ности и экстенсивности инвазии отмечены у 2-4-месячных птиц с Аscaridia galli, Syngamus trachea, Capillaria obsignata и Raillietina tetragona, а у 6-8-месячных -с Heterakis gallinarum. Наивысшая инвазия птиц отмечена в летний период.
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