POULTRY DISEASES AND THEIR TREATMENT 
larged, hangs down at the back, and some- 
times touches the ground. 
Cause. Old layers are generally one 
The cause may be the strain of heavy 
laying, or may in cases be due to too much 
internal fat. 
Treatment. No satisfactory treatment 
can be recommended and the bird had best 
be killed. Such birds should not be used 
for breeding purposes. 
BRONCHITIS (CROUP) 
Not very common 
Symptoms. Bronchitis may be distin- 
guished by the rattling in the throat of the 
bird affected and by the rapid breathing and 
cough. The rattling is due to mucus in 
the inflamed bronchial tubes. In bad cases, 
birds mope, refuse to eat, and soon die. 
Cause. Bronchitis may develop from an 
ordinary cold, or may be due to sudden 
changes of temperature, or to exposure to 
rain, cold, and damp. 
Treatment. Keep affected bird away 
34 
