Show II L DAIRY HINTS Ir III I REDUCE EXTENT OF DISEASE Testing Cattle Tor 01 r Tuberculosis Tuberculosis and Cleaning Up Infected Herds Having Effect Prepared by the United States State Department of ot Agriculture That testing cattle for tor tuberculosis and nd the cleaning up of or Infected herds are having a permanent effect In reducing reducing reducing re re- the extent of of the disease Is I shown conclusively by figures recently collected by the United d States Department Depart Depart- anent ment of tf Agriculture from Inspectors Inspectors' fors' fors In charge of ot the eradication work w In various arlous parts of the country The Inspectors Inspectors In In- w were r asked to supply fi figures on the results of ot three or more tests on badly diseased herds those that had not less than 10 per cent of ot reactors reactors re re- actors on the first t test st st. The first test teston teston teston on more than C cattle In these bad herds showed allowed that 20 per r cent had bad tuberculosis Another test six sir months later on on tha same ame herds from which the reactors had been removed showed only 69 per cent of ot the disease dis dis- ease B By another mother sIx sir months the percentage percentage percentage per per- had gone down to 28 A fourth test on more than of ot these cattle showed only 18 8 per cent of ot tuberculosis The reports from which these figures figures figures fig fig- ures were taken show that under normal normal normal nor nor- mal conditions herds very ery badly dIseased diseased dis dIs- eased may be established as relatively relative relative- ly free In a tl short time They also show that eradication work can be carried on without destroying the cattle cat tie tle Industry as Is sometimes thought Erratic results were nere obtained on a aver avery avery ver very few of ot the 1882 herds tested the list of ot this tills class containing less than Out of the herds under underA r f rat ratA i A Dairy Herd Certified by the Department Department Department De De- of Agriculture as as' Free Fre From Tuberculosis r observation atlon December 1 1921 there were I only i a very few tow that ha had not shown satisfactory Improvement as a are re result result tilt of testing v |