The role of a rainworms in the emergence of mixed pasteurellosis and ascaridosis diseases of the birds
AbstractThe article describes the results of the role of a rainworms in the emergence of pasteurellosis and ascaridosis diseases of the birds. In cloth homogenates of rainworms, obtained from different types of soils, bacteria of the species Pasteurella multocida have been confirmed and bacteriological studies have confirmed the pathogen of pasterelosis (cholera, hemorrhagic septicemia). Its pathogenicity has been experimentally proved - the fatality of infected 120-day chicks was 70 %. The presence of titres indicates a significant accumulation in the earthworm homogenate of the Pasteurella multocida Pasteurella causative agent: in spring, in samples from sandy soils, selected at 5 m from the trap, in the titre 1:16 (log2), taken at 5 km from the trap, in Titles 1: 8 (log2), 10 km from the sepulcher - in the title 1:16 (log2); In summer, in samples of sandy soils, respectively, in titles 1:16 (log2), 1: 8 (log2), and 1: 8 (log2) and in the autumn – in the titles 1:32 (log2), 1:32 (log2) and 1 : 16 (log2) respectively. Parasitological studies of soil samples have shown that the largest number of ascariide eggs is observed in sandy soils (10-17 eggs) and chernozem (8-14 eggs) types of soils. The results of the studies indicate an intense accumulation of Ascaridia galli eggs in the body of earthworms of the species Lumbricus terrestris. Their infectivity was 9.94 % (an average of 8.7 eggs per individual worm). The intensive increase in the number of helminth eggs in the body of rainworms is noted in the spring – by 2.5 % higher than in the summer, by -15 % compared to autumn time and by – 25.4 % compared with winter. It has been established that the rain worm, which is the reservoir owner for ascarids and for the pathogens of pasteurellosis (cholera, hemorrhagic septicemia) of bird, when entering the body of a susceptible birdheads, is capable of causing mixed of the disease. Clinical signs and pathological and anatomical changes in the experimental poultry were pathognomonic for mixed pasteurellosis and ascaridosis diseases.
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