CHAPTER XVIII 



A FEW REPORTS OF CONTAGIOUS UDDER-INFECTIONS 

 I. Contagious Udder-streptomycosis 



A. REVIEW of a description BY M. SANDGREN, 

 VETERINARIAN AT YSTAD 



During a period of ca. two months, twenty cows were 

 affected with a contagious mastitis. The condition oc- 

 curred principally in good milking cows. The disease 

 began with intense fever and diminished appetite. It 

 spread rapidly from one quarter to another until the entire 

 udder was soon affected. The diseased quarters were mod- 

 erately swollen. The quantity of milk was lessened and 

 it was yellow and mixed with pus and flocculi of fibrin. 



The sample submitted was almost normal in appearance 

 and of yellowish-white color. The sediment consisted of a 

 moderate amount of yellowish- white pus containing a mod- 

 erate number of Gram positive streptococci arranged in 

 twos. The diagnosis was corroborated by cultures. 



B. REVIEW OF A DESCRIPTION BY S. LINDKVIST, VETERINARIAN 



AT BROSARP 



An obviously contagious mastitis occurred suddenly in 

 a cow stable, and in the course of a few days four cases 

 developed. The stalls of the animals affected were situated 

 in different parts of the stable. The udders were swollen 

 and painful, but not hard. The milk at first was com- 

 paratively normal, but became mixed with pus and croupous 

 flakes. The animals showed no fever, but a diminution of 

 appetite. They showed great weakness. They preferred 

 to lie down and could only get up with great difficulty. 



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