INVESTIGATION OF TUBERCULOSIS IN SHEEP AT SADAR AND PARBATIPUR UPAZILA UNDER DINAJPUR DISTRICT IN BANGLADESH

Abstract

Tuberculosis is highly zoonotic contagious diseases caused by Mycobacterium tuberculosis complex (MTC or MTBC) occurs both human and animal. Sheep are considered susceptible to M. bovis infection. The duration of the study was from January to June, 2018. Out of 140 sheep 7 were found positive and overall prevalence was 5% positive, 15% were doubtful cases and 80% were negative. According to this study the highest number of positive TB was found in female sheep that are equivalent to 6.4%, while doubtful cases were 14.9% and the negative cases were 78.7%. In terms of males the positive cases were 2.2%, the doubtful cases were 15.2% whereas the negative cases were 82.6%. In this study the high prevalence 23.5% was recorded 4 and above years while no positive animal was detected in lambs. In this study highest positive rate 14.8% was recorded in the crossbreed followed by non-descript Deshi 2.7%. On the other hand according Body Condition Score group poor body condition showed high prevalence 15% as compared with medium body condition score was 2.7 %, no positive reactor was recorded in sheep having good body condition score. And 10.2% Positive cases were found in lactating females and 3.6 % was found in non-lactating females. The study also recorded that 7.7% positive in pregnant ewes and 6.9% positive in non-pregnant ewes. In the study area, there was no previous history of TB and PPD Skin Test for diagnosis of TB by using TST (tuberculin skin test).