DISEASES OF ANIMALS 



143 



tern joints. The disease appeared to 

 originate as a result of infection in 

 wounds while the sheep were allowed 

 to stand in the mud. The best treat- 

 ment was found in the use of an iodized 

 phenol or a saturated solution of borax. 

 Creolin also gave good results when ap- 

 plied to the affected parts. 



Aspergillosis_A number of molds 

 belonging to the genera Aspergillus and 

 Penicillium have been found to be some- 

 what pathogenic when inhaled into the 

 lungs in large quantities. The spores 

 may germinate in the lungs, causing the 

 development of tubercles, which some- 

 what resemble those of true tuberculosis. 



trouble prevails most extensively in cer- 

 tain localities in the western parts of the 

 United States but ordinarily runs a be- 

 nign course and therefore does not at- 

 tract much attention except upon the 

 inspection of mutton after slaughter. 

 All kinds of sheep, whether pure breeds 

 or common stock, are equally susceptible, 

 but the symptoms do not develop to an 

 alarming extent except among breeding 

 ewes. According to the investigations of 

 Norgaard and Mohler fatal cases are 

 practically unknown and the losses 

 which result from the rejection of af- 

 fected carcasses in abbattoirs are very 

 small. 



Fiff. 98 — AN ADVANCED CASE OF COMMON SCAB 



There is no satisfactory treatment for 

 the disease except that of a preventive 

 nature, which naturally consists in 

 avoiding the use of moldy or dusty hay 

 for sheep. 



Pseudo-tuberculosis — This disease is 

 well known in Europe and the United 

 States and is sometimes also referred to 

 as caseous lymphadenitis. It is a 

 specific, infectious disease caused by a 

 bacillus which is pathogenic for a num- 

 ber of small laboratory animals as well 

 as sheep. It is apparently not patho- 

 genic for chickens or pigeons and it ap- 

 pears doubtful whether the disease ever 

 develops in horse and cattle. This 



Influenza — J n cases of this disease in 

 sheep the affected animals show great 

 depression, fever, weakness, and stagger- 

 ing gait, a cough develops and the appe- 

 tite is gradually lost. In some outbreaks, 

 diarrhea is a striking symptom, together 

 with such complications as pneumonia 

 and meningitis. The lesions which oc- 

 cur in this disease vary greatly accord- 

 ing to the part affected and are found 

 chiefly in the respiratory organs. In 

 the catarrhal form of the disease, Craig 

 and Bitting recommend one tablespoon- 

 ful three times daily of a mixture con- 

 taining 4 grams tincture of belladonna, 

 Yo gram tincture of aconite and enough 

 sirup of squill to make 4 ounces. 



