

TUBERCULOUS COWS AND USE OF THEIR MILK. 109 
Feeding calf B with milk of cow No. 1343. — This calf was 
dropped by a vigorous Jersey cow on February 20, 1897, and 
was ten days old when the feeding period began. The dam of 
the calf was tested with tuberculin about a year previous to 
the birth of this calf, and was pronounced healthy. Calf B, 
when about two weeks old (March 3-4) was tested with 
tuberculin and gave no response. From March 1, 1807, tom 
early in July, 1898, calf B was fed the entire milk supply of 
cow No. 1343. This calf has not been a vigorous eater, and 
at times has refused single feeds of milk. The calf has seemed 
healthy and has eaten hay readily. When a year old, the ani- 
mal was thought to be rather small for its age, but this may 
have been due to the fact that he had always refused grain 
feeds. Besides the test with tuberculin at the beginning of 
the feeding period, calf B was also tested July 30-31, Sep- 
tember 27-28, and December 17-18, 1897, and April 11-12, 
1898. This animal was also castrated in May, 1898, and was 
sent to pasture with calf A July 9, where it remained until 
November, 1898. It was returned to the same stable with the 
cows early in November, and was started upon a heavy grain 
ration, with a view to fattening for beef. When tested Decem- 
ber 22-23, this steer gave a marked response to the tuberculin 
test. (See temperatures, Table 2, page 104.) In addition to 
a marked rise of temperature, the steer showed physical symp- 
toms of roughness of the coat, shivering, and twitching of the 
muscles. Steer B was killed and carefully examined by the 
College veterinarian December 30, 1898. The only trace of 
the disease found was a few tubercles in one of the pharyngeal 
glands of the throat.. The disease was without doubt of recent 
origin. Had the disease been produced by the milk upon 
which the animal was fed for sixteen months before going to 
pasture, the disease would, doubtless, have appeared first in 
the digestive tract. While, of course, there is no positive 
_ proof as to how this animal contracted the disease, it seems 
most probable that the germs entered the system in the breath 
after the animal was returned to the stable early in November, 
1808. 
Feeding calf C with milk of cow No. 1337.— This was a 
heifer calf dropped by cow No. 1337 April 5, 1897. The calf . 
was allowed to suck its dam until about six months old. 
About October Ist the calf was weaned, but was fed the milk 
of the dam till January, 1898. It was then gradually changed 
