A TUBERCULIN TEST.

Dominion, Volume 4, Issue 1018, 6 January 1911, Page 8

A TUBERCULIN TEST.

r. • STRATEGY AND SOME ADVICE. ! , .The following concerning the tuberculin ; ..test is amusing and instructive. A subscriber to "Iloard's Dairyman" . sent to the' paper the following:— 1 "Olio ! of. the largest dairymen in the State, iJiaving a herd of some three or four ■ hiin'dred head and gathered irmu all parts .of' the. State, came out of the test with ya 'clear ticket,' no cattle condemned; . Another small dairyman with a herd of about a dozen head, lia'd seven cows conj demiied. I'ecling dissatisfied, however, } with ;the J test, and believing his cattle were I healthy, he exchanged herds with,/a neigli- ; bour after'th'o test had been made, and [before the expert (?) was to test his \ neighbour's herd the following day. Five i. ofsthe seven, condemned. cattle reversed : oyer'night and were pronounced O.K. on ! the second test." • j In a-reply .to its subscriber, "Hoard's [ Dairyman mader the-: following -obServa- ; tion"A word in reference in the above .inslance., It is well known that an anij m'al suffering", from tuberculosis will not respond, as a rule, to , the second test, if uiade 100 .soon after the first, unless a • double dose of tuberculin is used.' The customary practice is to wait sixty days before' retesting. • The very fapt that five • nf-the seven animals which reacted > iw- • der the first:,test did not react' to' the i oeixind test, strengthens the claim that a l period of sixty dnvs must elapse before i. a retest is roade.'\; 1 . .... .