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Pleuritis in slaughter pigs: Relations between lung lesions and bacteriology in 10 herds with high pleuritis |
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| Authors: | Pichai Jirawattanapong Norbert Stockhofe-Zurwieden Henk Wisselink Toine Cruijsen Mirjam Nielen |
| Institution: | a Department of Farm Resources and Production Medicine, Faculty of Veterinary Medicine, Kasetsart University, Kamphaengsaen Campus, Nakhon-Pathom 73140, Thailand b Department of Farm Animal Health, Faculty of Veterinary Medicine, Utrecht University, Yalelaan 7, 3584 CL Utrecht, The Netherlands c Department of Virology, Central Veterinary Institute of Wageningen UR, P.O. Box 65, 8200 AB Lelystad, The Netherlands d Department of Bacteriology, Central Veterinary Institute of Wageningen UR, P.O. Box 65, 8200 AB Lelystad, The Netherlands e Veterinair Centrum Someren, 5711 PK Someren, The Netherlands f Intervet International B.V., 5830 AA Boxmeer, The Netherlands g Division of Animal Sciences, Animal Sciences Group, Wageningen UR, P.O. Box 65, 8200 AB Lelystad, The Netherlands |
| Abstract: | Pleuritis in slaughter pigs has increased in recent years in the Netherlands. The aim of the present study was to determine what respiratory pathogens were involved in pleuritis.In total, lungs of 968 slaughter pigs from 10 herds with high prevalence of pleuritis were morphologically examined for size, location, and type of lesions. Moreover, histology and bacteriology were performed.Examination of gross lung lesions showed 45% pleuritis, 14% pleuropneumonia and 38% catarrhal pneumonia. Peribronchiolar cuffing was found in 61 of 142 samples. Actinobacillus pleuropneumoniae was cultured from 22 lung samples from four herds. Pasteurella multocida was cultured from 55 lung samples in eight herds. No specific pattern with respect to the causal pathogens was found.In conclusion, no single infectious cause of pleuritis was found. A variety of infectious agents combined with environmental factors should be considered as a cause of pleuritis. |
| Keywords: | Actinobacillus pleuropneumoniae Mycoplasma hyopneumoniae Swine Pleuritis Slaughter survey |
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