Rhinocytogram in calves with infectious respiratory diseases
The percentage of neutrophils, lymphocytes, eosinophils and epithelial cells was determined in smears-prints from the mucous membrane of the nasal cavity of 35 calves with diseases of the upper respiratory tract. It was found that in the nasal mucosa of 14 clinically healthy calves flat epithelial cells predominated (up to 48,16±1,31 %), the number of leukocyte cells was 20 - 22 % and goblet epithelial cells - 12,6±0,94 %. 11 calves with PG-3 infection had an increase relative number of lymphocytes up to 19,4±1,2 %, cells of the goblet epithelium - up to 24,3±1,7 % (p<0,05). These observations and the results of clinical and laboratory studies confirmed the inadequacy of a complex of specific and nonspecific factors of nasal mucosa protection in calves infected by VPI-3. 10 calves with bacterial infection had in the rhinocytogram in addition to an increase in the number of neutrophils up to 29,2±1,9 %, a significant increase in the number of eosinophils up to 12,7±1,3 % (p<0,05). A change in the composition of epithelial cells was also observed in these animals: the number of squamous epithelial cells decreased 2,4 times, goblet cells in 1,4 times. The revealed results local disturbances of the mucosa and in the submucosal layer of the nasal passages in calves with infectious respiratory diseases.