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An Abattoir Survey of Pneumonia and Pleuritis in Slaughter Weight Swine from 9 Selected Herds
En slaktehusundersøkelse over pneumoni og pleuritt hos slaktegris fra 9 utvalgte besetninger. II. Enzootisk pneumoni hos gris: Mikrobielle funn og deres relasjon til patomorfologi
II. Enzootic Pneumonia of Pigs: Microbiological Findings and their Relationship to Pathomorphology
Acta Veterinaria Scandinavica volume 32, pages 67–77 (1991)
Abstract
Lungs from 191 slaughter pigs with gross lesions indicative of enzootic pneumonia of pigs (EPP) and 80 grossly normal lungs, all originating from 9 different herds, were subjected to microbiological and pathological examinations. The microbiological studies included both bacterial and mycoplasmal culture and also testing for Mycoplasma hyopneumoniae antigen in tissue by indirect immunofluorescent technique. M. hyopneumoniae, Pasteurella multocida and Mycoplasma hyorhinis were detected in 83 %, 43 % and 37 % of the pneumonic lungs, respectively. Mycoplasma flocculare was the most frequently isolated organism in the non-pneumonic lungs. The greatest amounts of macroscopic pneumonia (25.2 %) were recorded in lungs with all the three agents M. hyopneumoniae, P. multocida and M. hyorhinis present. The anmounts of pneumonia in lungs with M. hyopneumoniae alone and in concurrence with P. multocida, were 9.3 % and 15.6%, respectively. M. hyorhinis was also, in this study, associated with higher frequency of diffuse pleuritis. These findings indicate that M. hyorhinis might be involved in the pathogenesis of pneumonia in slaughter pigs. Ninety-six per cent of the isolates of P. multocida from pneumonic lungs could be characterized as type A. In the herds which had the most severe pneumonia problems, toxin production was detected in 83 % of the P. multocida strains while only 28 % were toxigenic in herds with subclinical to moderate pneumonia problems.
Sammendrag
Hundreognitten slaktegrislunger med patologiske forandringer som kunne tyde på enzootisk pneumoni hos gris (EPP), samt 80 lunger med normalt utseende, ble undersøkt patologisk og mikrobiologisk. De stammet alle fra 9 utvalgte besetninger. De mikrobiologiske undersøkelsene omfattet dyrkning med hensyn på både bakterier og mykoplasmer. I tillegg ble indirekte immunfluorescensteknikk anvendt for påvisning av Mycoplasma hyopneumoniae i lungevev.
M. hyopneumoniae, Pasteurella multocida og Mycoplasma hyorhinis ble påvist i henholdsvis 83 %, 43 % og 37 % av de pneumoniske lungene. Mycoplasma flocculare var den vanligst påviste mikroorganismen i normale lunger.
Enkeltlunger der både M. hyopneumoniae, Pasteurella multocida og Mycoplasma hyorhinis ble påvist, hadde størst utbredelse av pneumoni (25.2 %). I lunger der M. hyopneumoniae ble påvist alene eller i kombinasjon med P. multocida, var utbredelsen av pneumoni henholdsvis 9.3 % og 15.6 %. I denne undersøkelsen ble det også påvist en sammenheng mellom forekomst av M. hyorhinis og diffus pleuritt. Disse funnene tyder på at M. hyorhinis har betydning for patogenesen ved pneumoni hos slaktegris.
Nittiseks prosent av P. multocida isolatene fra pneumoniske lunger var type A. Fra de besetningene som hadde de mest uttalte pneumoniproblemene, ble toksinproduksjon påvist hos 83 % av de isolerte P. multocida stammene, mens bare 28 % av stammene fra de besetningene som hadde moderate pneumoniproblemer var toksinogene.
References
Adegboye DS: A review of mycoplasms-induced immunosuppression. Brit. vet. J. 1978, 134, 556–560.
Armstrong CE, Freeman MJ, Sands-Freeman L, Lopez-Osuna M, Young T, Runnels LJ: Comparison of the enzyme-linked immunosorbent assay and the indirect hemagglutination and complement fixation tests for detecting antibodies to Mycoplasma hyopneumoniae. Canad. J. comp. Med. 1983, 47, 464–470.
Armstrong CH, Scheidt AB, Thacker HL, Runnels LJ, Freeman MJ: Evaluation of criteria for the postmortem diagnosis of mycoplasmal pneumonia of swine. Canad. J. comp. Med. 1984, 48, 278–281.
Armstrong CH, Sands-Freeman L, Freeman MJ: Serological, pathological and cultural evaluations of swine infected experimentally with Mycoplasma flocculare. Canad. J. vet. Res. 1987, 51, 185–188.
Bœkbo P: Toxigenic Pasteurella multocida isolated from pneumonic lesions in swine. Studies of the pathogenic properties of toxin producing strains. 9th. Pig vet. soc. Congr., Barcelona 1986, 230.
Bölske G, Martinsson K, Persson N: The incidence of mycoplasma and bacteria from lungs of swine with enzootic pneumonia in Sweden. 6th. Pig vet. Soc. Congr., Copenhagen 1980, 213.
Carroll EJ, Rollins M, Jasper DE: The immune response of rabbits to 3 strains of Mycoplasma agalactiae var. bovis isolated from mastitic bovine udders. Cornell Vet. 1976, 66, 143–151.
Carter GR, Subronto P: Identification of type D strains of Pasteurella multocida with acriflavine. Amer. J. vet. Res. 1973, 34, 293–294.
Carter GR, Rundell SW: Identification of type A strains of Pasteurella multocida using staphylococcal hyaluronidase. Vet. Rec. 1975, 96, 343.
Ciprian A, Graza M de la, Pijoan C: Interaction between Mycoplasma hyopneumoniae and Pasteurella multocida in conventional pigs. 9th. Pig vet. Soc. Congr., Barcelona 1986, 282.
Falk K: Lung infections in pigs. An abattoir survey of pneumonia in slaughter weight swine. Thesis. The Norwegian College of Veterinary Medicine, Oslo 1988.
Falk K, Lium BM: An abattoir survey of pneumonia and pleuritis in slaughter weight swine from 9 selected herds. III. Serological findings and their relationship to pathomorphological and microbiological findings. Acta vet. scand. 1991, 32, 79–88.
Farrington DO: Pneumonic pasteurellosis. In: Diseases of Swine. Ed. by AD Lehman et al. 6th ed. Iowa State University Press, Ames 1986, p. 436–443.
Friis NG: Mycoplasmas cultivated from the respiratory tract of Danish pigs. Acta vet. scand. 1971a, 12, 69–79.
Friis NF: Mycoplasma hyorhinis as a causative agent in pneumonia of pigs. Acta vet. scand. 1971b, 12, 116–119.
Friis NF: The pathogenicity of Mycoplasma flocculate. Acta vet. scand. 1973, 14, 344–346.
Friis NF: Mycoplasmas in pigs with special regard to the respiratory tract. Thesis. Royal Veterinary and Agricultural University, Copenhagen 1974a.
Friis NF: Mycoplasma suipneumoniae and Mycoplasma flocculare in comparative pathogenicity studies. Acta vet. scand. 1974b, 15, 507–518.
Friis NF: Some recommendations concerning primary isolation of Mycoplasma suipneumoniae and Mycoplasma flocculare. A survey. Nord. Vet.-Med. 1975, 27, 337–339.
Friis NF: Selective isolation of slowly growing acidifying mycoplasmas from swine and cattle. Acta vet. scand. 1979, 20, 607–609.
Gois M, Kuksa F: Intranasal infection of gnotobiotic piglets with Mycoplasma hyorhinis: Differences in virulence of the strains and influence of age on the development of infection. Zbl. Vet.-Med. [B] 1974, 21, 352–361.
Gois M, Sisak F, Kuksa F, Sovodina M: Incidence and evaluation of the microbial flora in the lungs of pigs with enzootic pneumonia. Zbl. Vet.-Med. [B] 1975, 22, 205–219.
Gois M, Kuksa F, Sisak F: Microbiological findings in the lungs of slaughter pigs. 6th Pig vet. Soc. Congr., Copenhagen 1980, 214.
Kielstein Von P, Schimmel D: Typisierung sowie Toxinbildung und Virulenzeigenschaften von Pasteurella-multocida-Stämmen aus den Atmungsorganen von Schwein und Kalb (Kurzmitteilung). (Typing, toxin formation, and virulence properties of Pasteurella multocida strains from respiratory organs of swine and calf (Brief communication)). Mh. Vet.-Med. 1986, 41, 563–565.
L ‘Ecuyer C, Switzer WP, Roberts ED: Microbiologic survey of pneumonie and normal swine lungs. Amer. J. vet. Res. 1961, 22, 1020–1025.
Little TWA: Respiratory disease in pigs: a study. Vet. Rec. 1975, 96, 540–544.
Lium BM, Falk K: An abattoir survey of pneumonia and pleuritis in slaughter weight swine from 9 selected herds. I. Prevalence and morphological description of gross lung lesions. Acta vet. scand. 1991, 32, 55–65.
Morrison RB, Pijoan C, Hilley HD, Rapp V: Microorganisms associated with pneumonia in slaughter weight swine. Canad. J. comp. Med. 1985, 49, 129–137.
Nicolet J: Sur l’hémophilose du porc. III. Différenciation sérologie de Haemophilus parahaemolyticus. (Haemophilus infections in pigs. III. Serological studies on Haemophilus parahaemolyticus). Zbl. Bakt. Hyg. [Orig A] 1971, 216, 487–495.
Nielsen R, O’Connor PJ: Serological characterization of 8 Haemophilus pleuropneumoniae strains and proposal of a new serotype: Serotype 8. Acta vet. scand. 1984, 25, 96–106.
Osborne AD, Saunders JR, K-Sebunya T: An abattoir survey of the incidence of pneumonia in Saskatchewan swine and an investigation of the microbiology of affected lungs. Canad. vet. J. 1981, 22, 82–85.
Pijoan C, Lastra A, Ramirez C, Leman AD: Isolation of toxigenic strains of Pasteurella multocida from lungs of pneumonic swine. J. Amer. vet. med. Ass. 1984, 185, 522–523.
Pijoan C: Respiratory system. In: Diseases of Swine. Ed. by AD Lehman et al. 6th ed. Iowa State University Press, Ames 1986, p. 152–162.
Pijoan C, Fuentes M: Severe pleuritis associated with certain strains of Pasteurella multocida in swine. J. Amer. vet. med. Ass. 1987, 191, 823–826.
Ross RF, Whittlestone P: Recovery of identification of, and serological response to porcine mycoplasmas. In: Methods in Mycoplasmology. Vol. II: Diagnostic mycoplasmology. Ed. by JG Tully & S. Razin. Academic Press, New York 1983, p. 115–127.
Ross RF: Mycoplasmal diseases. In: Diseases of Swine. Ed. by AD Lehman et al. 6th ed. Iowa State University Press, Ames 1986, p. 469–483.
Rutter JM, Luther PD: Cell culture assay for toxigenic Pasteurella multocida from atrophic rhinitis of pigs. Vet. Rec. 1984, 114, 393–396.
Smith IM, Hodges RT, Betts AO, Hayward AHS: Experimental infections of gnotobiotic piglets with Pasteurella septica (sero-group A) alone or with Mycoplasma hyopneumoniae. J. comp. Path. 1973, 83, 307–321.
Whittlestone P: Porcine mycoplasmas. In: The Mycoplasmas. Vol. 2: Human and Animal Mycoplasmas. Ed. by JG Tully & RF Whitcomb. Academic Press, New York 1979, 134, p. 134–176.
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Falk, K., Høle, S. & Lium, B.M. An Abattoir Survey of Pneumonia and Pleuritis in Slaughter Weight Swine from 9 Selected Herds. Acta Vet Scand 32, 67–77 (1991). https://doi.org/10.1186/BF03546998
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DOI: https://doi.org/10.1186/BF03546998