DISEASES OF POULTKY. 



109 





Fig-. 22- — Sections of diseased liver; n, protozoa in space 

 formerly occupied by liver cells; ^, capillaries dilated and 

 filled with red corpuscles; tr, round cells or leucocytes, x 500. 



the mucous membrane and set up the changes which, 

 constitute the disease. 



Treatment. — It is evident that the treatment of in- 

 fectious entero -hepatitis must be principally of a hy- 

 gienic and preventive nature. Where the disease has 

 existed long upon a farm, the roosting places, runs and 

 feeding grounds must be infected, and the breeding 

 stock are affected in a chronic form and are continually 

 disseminating the contagion. This being the case, 

 adequate measures must be adopted to free the prem- 

 ises from the parasite before healthy stock can be 



