POUIvTRY DISEASES AND THEIR TREATMENT. 



23 



When a bird 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 this table is not intended to tell the readetl 

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

 this book to read in any given case 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 



JBelching of gas 



Breathing abnormal (i. e.) , 

 too rapid, too slow, wheez- 

 ing, whistling, snoring or 

 in any different from nor- 

 mal 



Choking 



Comb, pale 



Comb fir.st pale, but later 

 dark 



Comb, very dark 



Comb, yellow 



Com'b. with white, powdery 

 scurf 



Constipation 



Convulsions .' 



Co ugh 



Crop, enlarged and hard. . . 

 Cro2}. enlarged and soft 



Diarrhea 



Nostrils, discharge from.. 

 Emaciation 



Peritonitis (72), Dropsy (73), White diarrhea (181). 



Inflanimation of crop (34). 



Diseases of the respiratory system (85) , 

 Arsenic poisoning (44) . Pericarditis (112) , 

 Gapes (195), Air-sac mite (110). 



Arsenic poisoning (44). 



Tuberculosis (57), Dropsy (73), Air-sac mite (110), 

 Infectious leukaemia (114), White diarrhea (181). 



Enteritis ^39). 



Liver disease (47), Blackhead (53), 

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



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



White comb (150). 



Simple constipation (41), Indigestion (42), 

 Inflammation of oviduct (165). 



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

 Epilepsy (119), •'Harvest-bug" (145). 



Diseases of the respiratory system (85) . 



Crop bound (32) . 



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

 Gastritis (36). 



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

 Copper, lead or zinc poisoning (44), Blackhead (53), 

 Tuberculosis (57), Cholera (66), Roup (90), 

 White diarrhea (181). 



Diseases of the respiratory system (85). 



Tuberculosis (57), Aspergillosis (104), Visceral gout (121) 

 Mites (132), White diarrhea (181). 



