352 



ANNUAL REPORTS OF DEPARTMENT OF AGRICULTURE. 



shall be tested with tuberculin by an inspector of the Bureau of Ani- 

 mal Industry before beinf^ exported or after arrival at the animal 

 quarantine station at the port of entry. The following table shows 

 the results of such tests made in Great Britain during the fiscal year: 



Results of tuberculin tests in Oreat Britain of cattle for importation, fiscal 



year 1912. 



Note.— Eight Ayrshire, 1 Dexter, and 1 Guernsey were not shipped, owing to having been 

 exposed to tuberculous cattle. 



SUPPRESSION OF BOVINE TUBERCULOSIS. 



TUBERCULIN TESTING OF CATTLE IN VIRGINIA AND MARYLAND. 



The tuberculin testing of dairy cattle in Virginia and Maryland 

 Avas started in 1907 in cooperation with the health department of the 

 District of Columbia. The systematic work of eradicating cattle 

 tuberculosis from the District of Columbia was taken up under an 

 order of the Commissioners of the District, approved by the Secre- 

 tary of Agriculture November 27, 1909. In 1910 the work was ex- 

 tended to cooperate with the dairy and food division of the State 

 of Virginia. These closely related lines of work have been con- 

 tinued throughout the past year with encouraging results, as is 

 evidenced by the increased number of cattle tested, the marked reduc- 

 tion in the percentage of reacting animals in previously tested herds, 

 and the confirmation of reactions by post-mortem examination of 

 slaughtered reacting animals to the extent of 97.78 per cent. The 

 results of these tests are shown by the following table : 



ReKults of tuberculin testing of dairy cattle in Virginia and Maryland, fiscal 



year 1912. 



Item. 



Virginia: 



Cattle not previously tested 



Annual retests 



Total 



Maryland: 



Cattle not previously tested 



Annual retests. 



Total 



Cattle not previously tested, both States 

 Annual retests, both States 



Total, both States 



Number 

 tested. 



2,799 

 2,716 



5,515 



649 

 879 



1,528 



Number Number 

 passed, reacted. 



3,448 

 3,595 



7,043 



2,315 

 2,634 



4,949 



510 



847 



1,357 



2,825 

 3,481 



6,306 



462 



77 



539 



126 

 28 



154 



588 

 105 



693 



Number 

 of sus- 

 pects. 



22 

 5 



27 



13 

 4 



17 



36 

 9 



44 



Percent- 

 age of 

 reactors 

 and sus- 

 pects. 



17.29 

 3.02 



10.26 



21.42 

 3.64 



11.19 



18.07 

 3.17 



10.46 



