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Mycoplasmas isolated from goats and sheep with pleuropneumonia in Saudi Arabia

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Summary

Pleuropneumonia of goats and sheep has been known to cause serious economic losses in many countries including Saudi Arabia. A preliminary investigation was carried out on 163 goats and 130 sheep which showed clinical symptoms or post-mortem lesions of pleuropneumonia. Pathological samples from the respiratory tract of live or slaughtered goats and sheep (183 and 160 samples respectively) were cultured for mycoplasmas. Of 343 mycoplasma cultures examined 211 (61·5%) isolates were characterised biochemically. A total of 116 isolates were serologically identified asM. mycoides subsp.mycoides, M. ovipneumonia, M. conjunctivae, M. agalactiae subsp.agalactiae, M. putrifaciens andM. arginini. The remaining mycoplasma isolates were not identified. The significance of the identified isolates and their probable pathogenic effect on the respiratory tract of goats and sheep are discussed. Their pathogenicity needs to be established experimentally before initiating a control programme in the Kingdom.

Résumé

On sait que la pleuropneumonie du mouton et de la chèvre cause de sérieuses pertes économiques dans beaucoup de pays, dont l'Arabie Saoudite. Une recherche préliminaire a été entreprise sur 163 chèvres et 130 moutons montrant des symptômes cliniques ou des lésions à l'autopsie. Des prélèvements du tractus respiratoire de chèvres et de moutons vivants ou abattus (respectivement 183 et 160 échantillons) ont été mis en culture pour la recherche de mycoplasmes. Sur les 343 cultures de mycoplasmes examinées, 211 souches (soit 61,5%) ont été caractérisées au point de vue biochimique. 116 souches ont pu être identifiées sérologiquement comme étantM. mycoides sub.mycoides, M. ovipneumoniae, M. conjunctivae, M. agalactiae sub.agalactiae, M. putrefaciens etM. arginini. Les autres souches de mycoplasmes n'ont pas été identifiées. La signification des souches identifiées et leur effet pathogène probable sur le tractus respiratoire des chèvres et des moutons sont discutés. Leur pouvoir pathogène demande à être expérimentalement établi avant de mettre en place un programme de contrôle de la maladie dans le Royaume.

Resumen

Se llevó a cabo una investigación preliminar en 163 cabras y 130 ovejas las cuales mostraron síntomas clínicos o lesiones postmortem de pleuroneumonía contagiosa. Se cultivaron en medios especiales muestras patológicas del tracto respiratorio de cabras y ovejas vivas (183 y 160 muestras respectivamente. De 343 cultivos examinados, 211 (61·5%) aislamientos se caracterizaron bioquímicamente. Un total de 116 aislamientos se caracterizaron serológicamente comoM. mycoides, subsp.mycoides, M. ovipneumonia, M. conjuntivae, M. agalactiae subsp.agalactiae, M. putrifaciens yM. arginini. Los restantes micoplasmas aislados no fueron identificados. Se discute el significado de los aislamientos identificados y su posible efecto patógeno en el tracto respiratorio de cabras y ovejas. Es necesario establecer la patogenicidad experimentalmente antes de iniciar un programa de control en el Reino.

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Authors and Affiliations

  1. Animal Production and Health Section, Regional Agriculture and Water Research Center, Ministry of Agriculture and Water, PO Box 17285, 11484, Riyadh, Saudi Arabia

    Ahmed I. Radwan, Saad I. Bekairi & Abdullah A. Al-Mukayel

  2. Environmental Health Department, Ministry of Municipal and Rural Affairs, 11136, Riyadh, Saudi Arabia

    Nabil M. Al-Zeftawi & Mohamed A. Al-Issa

Authors
  1. Ahmed I. Radwan
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  2. Nabil M. Al-Zeftawi
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  3. Mohamed A. Al-Issa
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  4. Saad I. Bekairi
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  5. Abdullah A. Al-Mukayel
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Radwan, A.I., Al-Zeftawi, N.M., Al-Issa, M.A. et al. Mycoplasmas isolated from goats and sheep with pleuropneumonia in Saudi Arabia. Trop Anim Health Prod 17, 233–238 (1985). https://doi.org/10.1007/BF02356983

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  • DOI: https://doi.org/10.1007/BF02356983

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