POULTRY DISEASES AND THEIR TREATMENT. 



23 



Wlicn a l)ircl shows these general symptoms of illness it should 

 be picked up and isolated and an effort made to obtain a more 

 precise diagnosis. In doing this the following table of the chief 

 external symptoms may be found of use. 



This table aims to direct one to the discussion of general 

 classes of disease. The identification of special individual dis- 

 eases should be attempted only after reading over the chapters 

 covering the general class involved. In general it should be 

 kept in mind that tliis table is not intended to tell the readeti 

 zchat the disease he finds is, but solely to tell him zvhat parts of 

 this book to read in any giz'en ease in order to make a diagnosis. 



Table of External Symptoms zvhich may be of Some Value in 



Differential Diagnosis. 



The numbers in brackets denote the pages to be consulted. 



Symptom. 



Diseases which the symptom named may indicate. 



Abdomen swollen jPeritonitis (72), Dropsy (73), White diarrhea (181). 



Belehing of gas Inflammation of crop (34). 



Brcfithhtf/ abnormal li. e.). Diseases of the respiratory system (85). 

 too rapid, too slow, wheez- Arsenic poisoning (44). Pericanlilis (112). 

 ing. whistling, snoring or (Japes (19.5). Air-.sae mite (110). 

 in any ditlerent from nor- 

 mal 



Choking. 



Arsenic poisoning (44). 



Comb pale Tuberculosis (57). Dropsy {'%). Airsae mite (110). 



Infectious leukemia (114), Wtiiie diarrhea (181). 



Cmnh tirst pale, but later Enteritis (39). 

 dark 



Coiiih. very dark. 



Comb, yellow. 



Liver disease (47). Blackhead (.53). 

 Congestion of lungs, (107). Pneumonia (108). 



Liver diseases (47) , Visceral gout (121) . 



Co»>i/a witli while, powdery White comb (1.50). 

 scurf i 



Constipation Simple eonsiipaiion (41) , 1 ndlgestion (42) , 



Inflammation of oviduct (16.5). 



funvulxioim Arsenic poisoning (44). Copper, lead or zinc poisoning (44). 



Epilepsy (119). •Harvest-bug" (145). 



Coiii/h : Diseases of the respiratory system (85) 



Crop, enlarged and hard. . . Crop bound (32) 

 Crop, enlarged and soft... 



Inflammation of crop (34). Enlarged crop (36), 

 Gastritis (36). 



Diarrhra Diseases of the alimentary tract (32). Arsenic poisoning (44). 



iCopper. lead or zinc poisoning (44). Hlackhead (.53), 

 Tuberiulosis (57). Cholera (66). Roup (90). 

 White diarrhea (181). 



yostrils. discharge from . . . ; Diseases of the respiratory system (85) . 



Emaciation .Tuberculosis (57). Aspergillosis (104). Visceral gout (121) 



Mites (132), \Vhile diarrhea (ISl). 



