Tuberculosis 



121 



outh Rock hen weigh- 

 ing 4 pounds that was 

 reduced to 22 ounces. 

 The emaciation is very 

 marked in the muscles 

 covering the breast- 

 bone. 



Lameness is another 

 symptom often shown 

 in the later stages of 

 the disease. This is 

 caused by tuberculosis 

 of the joints, as has 

 been proven in many 

 cases. Such cases are 

 often called "rheuma- 

 tism" by poultrymen. 

 Tuberculosis may also 

 form tumors or ulcers 

 or various outgrowths 

 on the head and limbs 

 of birds. Such forms 

 of the disease are com- 

 paratively rare in poul- 

 try, however. Parrots 

 are particularly af- 

 fected with these ex- 

 ternal tubercles. 



None of these symp- 

 toms, however, is more 

 than an indication of 

 the possible presence 

 of the disease. 



Post-mortem find- 



