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One of the most common ectoparasitic diseases of domestic carnivorous animals is ctenocephalidosis caused by fleas of the genus Ctenocephalides. The peculiarity of this invasion is a chronic course associated with the constant attack of parasitic insects on the animal, accompanied by severe itching, the occurrence of alopecia, the development of eczema, dermatitis and the subsequent introduction of pathogenic microflora into the damaged tissue. The aim of the study was to investigate the effect of fleas of the genus Ctenocephalides on the biochemical parameters of the blood serum of invaded dogs. Three groups of animals were formed: a control (clinically healthy dog) and two experimental animals (infected by the parasitic insect Ctenocephalides spp.) with different intrusion rates. In blood serum determined: the content of total protein, albumin, total bilirubin, creatinine, urea, glucose, cholesterol, phosphorus, potassium, calcium, magnesium, alanine aminotransferase activity, aspartate aminotransferase, alkaline phosphate. Conducted studies found that rates the intensity of infestation significantly influence the changes that occur in blood serum infested dogs. The intensity of ctenocephalidosic infestation of up to 15 specimens of fleas in the animal in their blood serum showed a significant decrease in albumin content (by 22.37 %) compared to that in clinically healthy dogs. The intensities of xenophalphalous infestation of 16–47 specimens of fleas per animal in the serum of the infected animals showed a significant decrease in albumin (by 29.28 %), glucose (by 25.29 %), and cholesterol (by 35.59 %) relative to similar indicators clinically healthy animals. At the same time in the serum of the infested dogs the content of total bilirubin (by 15.73 %), as well as the activity of alanine aminotransferase (1.4 times), aspartate aminotransferase (1.4 times) and alkaline phosphatase (2 times). The results of the experimental data extend the already existing data on the pathogenesis of fleas parasites in dogs, and will also allow the effective treatment of diseased animals.

Biochemical parameters of blood serum of dogs for ctenocephalidosis