8 
Brisket Disease 
The two animals pictured above were from a lot of 3 5 that were 
raised near Parker, Colorado. One is a four-year-old cow, the other a 
two-year-old steer. They were shipped to a ranch near Fairplay, Colo¬ 
rado (altitude 9,500 ft.) where they were ranged with about 50 native 
cattle. Six of the animals raised at Parker (altitude 6,000 ft.) became 
ill with brisket disease, while none of the natives were affected. These 
animals were seen on October 17, 1915, at which time they had been sick 
about three weeks. On this same date a six-months-old calf of the Parker 
lot born at the high altitude was found to be suffering from the same 
disease. 
