528 A STUDY OF FARM ANIMALS 



kept dry, and cleaned and disinfected daily. A 5 per cent 

 solution of crude carbolic acid, mixed with whitewash is an 

 excellent disinfectant, using 2 pounds of the acid to 5 gallons 

 of the whitewash. A preventive measure used with success 

 in recent years is the bacterin treatment, inoculating the 

 fowls with a product made from the disease germs. This 

 treatment makes the birds immune. 



For medical treatment of roup, stick silver nitrate is used 

 for burning ulcers in the mouth, and, after the white matter 

 of the eye is wiped off with absorbent cotton, the silver 

 nitrate may be used here. The nasal passage may be washed 



out with a 20 per 





^ cent solution of 



common baking 

 soda (sodium bicar- 

 bonate), using 

 either a medicine 

 dropper or small 

 syringe, forcing the 

 fluid through the 

 passage into the 



Figure 257. A hen sick with roup. Photograph HlOUth. This treat- 

 from Ohio State University. , _ , 



ment may be fol- 

 lowed with peroxide of hydrogen. The affected parts should 

 then be cleaned with essential oils, of which the following is 

 recommended by Dr. B. F. Kaupp:* Oil of thyme 1 dram, 

 oil of eucalyptus 20 drops, oil of petrol 2 ounces. This 

 treatment should be given three times daily. 



Fowl cholera is a germ disease, distributed by many 

 agencies, as sick birds, water, wind, manure, insects, wild 

 birds, etc. Cholera affects chickens, ducks, turkeys, geese, 

 pigeons and wild birds, especially the buzzard. The germs 

 exist under quite a wide range of conditions, and may live a 

 long time. In protracted cases, writes Dr. Kaupp, "there 

 is a noted loss of appetite, great prostration, staring feathers; 



*Poultry Diseases and Their Treatment, 1914. 



