[Experimental infection with Mycoplasma gallisepticum: influence of ammonia as an exacerbating factor].
Five-week-old SPF chickens were inoculated with a virulent strain of M. gallisepticum and half were exposed to an atmosphere containing 100 ppm ammonia. The inoculation reduced weight gain and induced general and respiratory signs (prostration, tracheal rales, and snoring). Tracheal cilial movement was stopped. The severity and duration of M. gallisepticum infection were exacerbated by exposure to ammonia.
Kempf
I
I
Laboratoire National de Pathologie Aviaire, Ploufragan, France.
Cacou
P M
PM
Guittet
M
M
Ollivier
C
C
Morin
M
M
L'Hospitalier
R
R
Bennejean
G
G