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Mus-as The Disease Progresses: The severity and duration of the disease vary greatly. Symptoms may be so mild as to go unnoticed by the casual observer. In severe cases the animal usually becomes thin, and the pulse and breathing rate increase. As the disease progresses, there is drooling from the mouth, discharge of mucus from the nostrils, and increasing weakness. The disease is most severe in mature cattle, and as many as 50% of the affected animals have died in some outbreaks.
Mycoplasmosis is a respiratory disease caused y the bacteria Mycoplasma gallisepticum. It is Iso known as air sac disease or chronic respira-jry disease. Those affected with the disease may how nasal discharge, watery eyes, and respira-)ry difficulty. This disease is often associated /ith other respiratory diseases. It is transmitted hiefly from infected hens to their chicks through le eggs. The disease can also be transmitted by ontact with infected individuals, but it spreads ery slowly in this manner. The disease can best e controlled by maintaining breeding flocks free f the disease by strict measures of isolation and mitation. Chicks hatched from such flocks can egin life free of the disease.
The incubation period is generally one to 3 weeks, but it can be longer. Clinical Signs n with a stiffness of the legs and jaw mus-As the disease progresses, the ears become ; the tail extended, the neck stiff, and the ils dilated; the third eyelid will flick back-[ across the eyeball. Loud noises, sudden ;ments, or flashes of light will stimulate these ulsions and spasmodic contractions. The al assumes a rigid stance and has difficulty ing backward.
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