190 Diseases of Poultry 



According to Dammann and Mane^old ^ the affected fowls 

 show a roughness of plumage, swollen eyes, paleness of the 

 comb and lameness. At autopsy symptoms of hemor- 

 rhagic septicaemia are found. The musculature is permeated 

 with bloody effusions and red spots are observed in the 

 mucous membrane of the intestines. The spleen is con- 

 siderably enlarged and hemorrhagic patches were observed 

 in other parts of the body. 



Etiology. — According to Dammann and Manegold this 

 disease is caused by a capsule bearing streptococcus {Strepto- 

 coccus capsulatus gallinarum). The organism is present both 

 in the blood and the infected organs. The disease may be 

 readily transmitted by inoculation of visulent blood to 

 other chickens. The incubation period varies from 6 to 

 14 days and the course of the disease from 1 to 3 weeks. It 

 is not known how the disease is naturally transferred from 

 one bird to another. 



Treatment. — No treatment is known except the main- 

 tenance of general sanitary conditions. 



Spirochcetosis 



This disease has not yet been reported in this country. 

 It is known in South America, Europe, Africa and Australia. 

 It may exist in this country undistinguished from fowl 

 cholera. 



Diagnosis. — There is a dullness, loss of appetite and thirst. 

 The birds stand with head and tail down and eyes closed 

 as in Fig. 34. 



There is a rise of temperature. Diarrhea is present. 

 There is a pronounced ansemia. Post-mortem examination 



1 Dammann, G., and Manegold, 0., Deut. Tierarztl. Wchnschr. 

 Vol. 13, pp. 577-579, 1905. And Archiv Wiss. u. Prakt. Tier- 

 heilk. Bd. 33, 41-70, 1907. 



