480 COMMERCIAL POULTRY RAISING 



foot. Painting with tincture of iodine will dissipate tiie callus 

 if taken in the early stages; but if it has ulcerated, open it, 

 remove any pus, cleanse the wound with an antiseptic, and then 

 bind the foot in an application of carbolated vaseline. 



Canker. — This is probably the most disgusting ailment, and 

 is usually caused by contaminated food, also chronic cases of 

 roup. It is very contagious, hence the sick birds should be iso- 

 lated, and if they are badly afflicted, it is advisable to kill them 

 and destroy their carcasses. A yellow, cheesy, foul-smelling 

 matter forms in the corners of the mouth and in the windpipe, 

 which when removed reveals the raw flesh. Remove this foreign 

 matter and apply carbolated vaseline, or sulpho-carbolate of 

 zinc on the sores. See Roup. 



Catarrh. — ^See Roup. 



Chicken Pox (Bird Pox). — While this is contagious and will 

 spread rapidly throughout an entire flock, it is not necessarily a 

 serious trouble. It is usually caused by dampness or filth. It 

 may be introduced by new birds, or exhibition birds which return 

 from show rooms infected. Or it may be carried into the flock 

 by pigeons, sparrows and other birds, or by the attendant. 

 Scabby, yellow nodules or pimples appear on the face and comb, 

 especially around the beak, and frequently discharge a thick, 

 yellow matter. Isolate the sick birds at once, and anoint the 

 sores with carbolated vaseline. Administer the iron, quinine 

 and strychnine tonic, or a good poultry regulator, and simple, 

 nourishing food. 



Cholera. — See Enteritis. A bacterial disease caused by con- 

 taminated food or drinking water. Highly contagious, with a 

 heavy mortality. 



Colds. — See Roup. 



Crop Bound. — A hard and swollen condition of the crop caused 

 by an obstruction to the gullet from the crop, or by gorging large 

 quantities of grain, which swell and ferment. This trouble is 

 described elsewhere in a special chapter. 



Diarrhea. — See White Diarrhea, described in a separate 

 chapter. 



