Özet:

Purpose: This study was aimed at determining the effects of bacteriological factors included in the etiology of the Bovine Respiratory Disease Complex (BRD) on the clinical score and blood gases. The animal material of the study; 60-120 days, 28 BRD diagnosed (test group) and 10 healthy (control group) bears were created. The bruns with BRD were divided into groups on the basis of the microbiological examination of the broncoalveal washing fluid, Mannheimia haemolytica (n:6), Pasteurella multocida (n:10) and Mycoplasma bovis (n:12). All bulbs were scored according to the Wisconsin (WI) score system (rectal temperature, coughing, nasal fluid, ocular fluid and ear position). Blood gases were measured in venous blood samples. Results: All clinical scores were high (p<0,05) compared to the control group in the trial group. In the M. haemolytica and P. multocida groups, the path of the disease was more severe (p<0,05) than in the M. bovis group. In all the trial groups, pCO2 levels were high (p <0,05), pO2 and sO2 levels were low (p <0,05). Cl levels in the P. multocida group were controlled and low (p <0,05), HCO3 levels were high (p <0,05) compared to the M. haemolytica group. The BEefc and BE levels were significantly high (p <0,05) in the P. multocida group compared to all groups. Recommendation: The changes in blood gases and acid-base balance in BRD bears are associated with metabolic compensation of respiratory problems; according to clinical scores, M. haemolytica and P. The result was that multocidal infections were more severe clinical trajects.

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