ISOLATION AND CHARACTERISATION OF <i>MYCOPLASMA GALLISEPTICUM</i> FROM A FOWL

Rosenfeld, Lorraine E.

doi:10.1111/j.1751-0813.1971.tb02031.x

Cited by 6 publications

(3 citation statements)

References 8 publications

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“…Isolates of M . gallisepticum were identified by growth inhibition test or by immunofluorescence using the indirect epifluorescence procedure described by Rosendal and Black (1972). In some experiments an attempt was made to quantify the number of organisms in the upper respiratory tract.…”

Section: Post-mortem Examination and Culturementioning

confidence: 99%

Virulence and transmissibility of Mycoplasma gallisepticum

Soeripto

Whithear²,

Cottew³

et al. 1989

Aust Veterinary J

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The virulence of 4 low passage strains of Mycoplasma gallisepticum obtained from different sources within Australia was studied by experimental infection of chickens. Strain Ap3AS, originally isolated from the air sac of a broiler chicken, produced severe air sac lesions following injection into the abdominal air sacs of 2-week or 3-week-old chickens, and adult hens. Strain 80083 which was isolated from a clinically normal broiler breeder hen was also capable of producing gross air sac lesions following intra-abdominal (IA) injection, although it did so less consistently than strain Ap3AS. Strain 82078 isolated from a layer hen and strain QXO which was isolated from a turkey were also moderately pathogenic in terms of the incidence and severity of lesions elicited following IA injection. Strains Ap3AS and 80083 both caused a substantial loss of egg production over a 5 week period after IA infection of 27-week-old hens. Neither strain Ap3AS nor 80083 caused gross lesions or loss of egg production when administered alone into the upper respiratory tract. However, when inoculated into the conjunctival sac in combination with the Vic S strain of infectious bronchitis virus (IBV) strains Ap3AS and 80083 produced identical clinical signs of conjunctivitis. The mean numbers of M. gallisepticum in tracheal washings were significantly higher 2 weeks after infection in the group receiving strain 80083 in combination with IBV than in the group infected with strain Ap3AS and IBV (p less than 0.01).(ABSTRACT TRUNCATED AT 250 WORDS)

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Section: Post-mortem Examination and Culturementioning

confidence: 99%

Virulence and transmissibility of Mycoplasma gallisepticum

Soeripto

Whithear²,

Cottew³

et al. 1989

Aust Veterinary J

View full text Add to dashboard Cite

show abstract

“…Chronic respiratory disease is a cause of economic loss to the Australian poultry industry. Isolates of Mycoplasma gallisepticuni confirmed serologically have been made in Australia by Rosenfeld (1971) from chickens, and from the air sacs of turkeys (F. Yeats and C. J . R. Gorrie personal communication).…”

Section: Isolation Of Mycoplasma Gallisepticum From Embryonated Chickmentioning

confidence: 99%

“…The difficulties associated with isolating M . gullisepticurn directly from clinical cases of chronic respiratory disease were emphasised by Rosenfeld (1971). Nasal exudate from a chicken was passaged in the infraorbital sinus of experimental birds three times before the organism was grown on artificial medium.…”

Section: Isolation Of Mycoplasma Gallisepticum From Embryonated Chickmentioning

confidence: 99%