POULTRY DISEASES AND THEIR TREATMENT 



obstruct the air passages and cause suffoca- 

 tion. A secretion from the mucous mem- 

 brane affected, results from 

 the presence of the mites 

 and increases the obstruc- 

 tion of the air passages. 

 Treatment. The fumiga- 

 tion method tried for gapes 

 has been recommended, 

 but there is little reason 

 to expect success. 



FIG. 15 



THE AIR SAC MITE 

 (From Salmon.) 



MITES, DEPLUMING (SCABIES) 



Symptoms. Bare patches on the bird's 

 body due to the loss of 

 feathers. The rump and 

 the breast are most fre- 

 quently attacked. 



Cause. A small mite 

 (Sarcoptes Icevis) found 

 on the bird's body near the 

 base of the fallen feathers. 



Treatment. Isolate af- 

 fected birds; rub bare 

 patches and neighboring 



74 



FIG. 16 



THE DEPLUMING MITE 

 (From Salmon.) 



