56 POULTRY DISEASES 



Thrush— Aphtha— Sore Mouth 



This is a condition affecting the mouth and is 

 due to a low-grade fungus called the Oidium al- 

 bicans (saccharomyces albicans). This consists 

 of hyphse (fine thread-like processes) which in 

 some instances show well marked chains of cells. 

 It reproduces by forming round or ovoid spores. 



Symptoms. — Eberth has reported a case in a 

 bird that was emaciated and died in convulsions. 

 On the inner lining or mucous membrane of the 

 first portion of the esophagus whitish to brown- 

 ish yellow deposits adhering to the mucous sur- 

 face were observed. These were found to be 

 composed of the spores and filaments of this 

 fungus. It has also been reported as occurring 

 in turkeys. 



Treatment. — If the patches can be seen it is best 

 to cauterize the area with stick of lunar caustic 

 (moulded nitrate of silver). Intestinal antisep- 

 tics are also indicated such as are given in other 

 intestinal disorders as fowl cholera. (See page 

 83.) 



Tinea Favosa- Honey-Comb Ringworm 



This malady is due to another low-grade fun- 

 gus, the Achorion schoenleinii. The fungus some- 

 what resembles the Oidium albicans appearing in 

 hyphse or threads and reproducing by spore 

 formation. 



Symptoms. — This disease has been called favus, 

 baldness and white comb. It is a disease that is 

 highly contagious and attacks the comb, face and 

 neck. If not treated, but allowed to spread and 

 go on uninterrupted, it may later extend to the 

 body. 



The disease first appears on the comb or face 



