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KMID : 1094020170340030161
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Journal of Veterinary Clinics
2017 Volume.34 No. 3 p.161 ~ p.164
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Bacterial Pathogens and Their Antimicrobial Susceptibility in Calves with Summer Pneumonia
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Lee Sung-Whan
Kim Jun-Hee
Kim Doo
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Abstract
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Bovine respiratory disease (BRD) is one of the most important diseases in calves. It causes a huge economic loss in farms. BRD in calves is concentrated during winter because of the cold weather and lack of ventilation. However, BRD during summer in calves has continuously been a problem in farms. But there is no study about pathogens of summer pneumonia in calves and antimicrobial susceptibility in Korea. Therefore, aims of this study were to identify the pathogens and their antimicrobial susceptibility in calves with summer pneumonia. One hundred and one calves (2 weeks to 5 months after birth) with clinical sign of BRD from 5 farms were selected. After sampling by deep nasal swab, bacterial isolation and identification was conducted. Also, antimicrobial susceptibility test was performed. Pasteurella spp (49.4%), Staphylococcus spp (21.5%), Actinomyces spp (12.9%), E coli (10.7%), and Mannheimia haemolytica (5.3%) were isolated. The patterns of isolated pathogens from each farm were various. Also, the susceptibility of bacteria to antibiotics was showed a variety of patterns in each farm.
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KEYWORD
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calves , summer pneumonia , bacterial pathogens , antimicrobial susceptibility
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