BLOOD DISEASES 113 



Rupture of the Heart and Large Blood 



Vessels 



Internal hemorrhage (bleeding) due to rupture 

 of the heart or large blood vessels is common 

 in overfed fowls. It may be caused by any excite- 

 ment or overexertion in such birds. It is described 

 in this section because affecting organs of circu- 

 lation. 



Symptoms. — There is a sudden blanching of the 

 comb and mucous membranes followed by great 

 weakness, coma and death. No treatment is prac- 

 ticable. 



