426 DISEASES OF CATTLE. 



of Animal Industry is prepared so that it will not be necessary to 

 dilute it. and tlie dose is 2 cubic centimeters for an adult animal. 

 Yearlings and 2-year-olds, according to size, should receive from 

 1 to 1^ cubic centimeters, while bulls and very large animals may 

 receive 3 cubic centimeters. 



6. The next day, at 6 a. m., commence taking temperatures, and 

 continue every two or three hours until the twentieth hour after 

 injection, at which time, if there is no tendency for the temperature 

 to rise, the test may cease. 



7. A rise of two or more degrees Fahrenheit above the maximum 

 temperature observed on the previous day, provided the temperature 

 exceeds 103.8° F., should be regarded as an indication of tuberculosis. 

 Those cases which approximate but do not reach this standard should 

 be considered as suspicious and held for a retest six weeks later, giv- 

 ing double the original dose. 



TREATMENT OF TUBERCULOSIS. 



Treatment of the disease is not seriously considere'd by any author- 

 ities at the present time. 



The measures to be adopted to prevent the spreading of the disease 

 must take into consideration not only the tubercle bacillus, but like- 

 wise all those circumstances that make cattle more susceptible to the 

 disease, and which have already been dwelt upon. It would be useless 

 to repeat here all that has been said above on the transmission of 

 tubercle bacilli from one animal to another, and on the dangers of 

 certain debilitating influences. A careful study of these influences 

 will show how tuberculosis may, at least in some cases, be prevented. 

 Great care should be bestowed upon the breeding, the surroundings, 

 and the feed of the animal, so that the latter may be put into a condi- 

 tion to resist irfection even when exposed to it. A tuberculin test 

 should be applied to all strange cattle before they are introduced into 

 the herd, and those which show a reaction should be refused. 



A rigid exclusion of tuberculous animals is all that is necessary to 

 prevent the appearance of the disease, provided cattle are not infected 

 by consumptive persons and animals, though it is probably unusual, 

 because the bacilli from man are, in most cases, attenuated and harm- 

 less to cattle. 



Tuberculosis in cattle must also be considered as bearing upon 

 tuberculosis of other domesticated animals, particularly hogs. In 

 Europe and the T"''nited States this disease is not uncommon among 

 hogs, and appears to be on the increase. The reason for its existence 

 may be looked for in the feeding of pigs with skim milk, buttermilk, 

 and whey from creameries, with the otfal of tlie abattoirs, with the 

 household refuse generally, and behind tuberculous cattle. If tuber- 



