[Mycoplasma bovis infection: epidemiological and clinical survey of dairy cattle farms in Morocco].
An epidemiological survey of M bovis infection in dairy cattle was performed in 10 herds of the Gharb's region, by sampling the animals three times with a two-month interval, between November 1985 and May 1986. M bovis was isolated in six herds with calf enzootic bronchopneumonia with a total frequency of 39% during the first visit, then 25 and 13% after two and four months, respectively. The severity of the symptoms seems closely related to the age of the animals: the youngest being the most susceptible. On the other hand, M bovis was isolated in two herds from 11% of cows suffering from clinical and subclinical mastitis. The isolation occurs at any lactation stage and the infection lasted more than four months in 40% of the animals. These results suggest that mycoplasma are important bovine pathogens in Morocco.
Taoudi
A
A
Département de Microbiologie, Immunologie et Maladies Contagieuses, Institut Agronomique et Vétérinaire Hassan II, Rabat-Instituts, Maroc.
Maaroufi
K
K
Fassi-Fehri
M
M
Oudar
J
J
D000818:Animals; D002417:Cattle; D002418:Cattle Diseases / Q000453:epidemiology* / Q000382:microbiology; D005260:Female; D009018:Morocco; D009175:Mycoplasma Infections / Q000453:epidemiology / Q000662:veterinary*
Infection à Mycoplasma bovis: suivi épidémiologique et clinique dans des élevages bovins laitiers au Maroc.