CROSS SECTIONAL STUDY ON BOVINE TUBERCULOSIS AT GHMBI MUNICIPAL ABATTOIR

Across sectional study to determine the prevalence of bovine tuberculosis at Ghmbi municipal abattoir was carried out on 400 heads of cattle from October 2008 to April 2009.Post mortem examination was used as a tool to establish the prevalence and culture and Ziehl-Neelsen staining to characterize mycobacterium. Tuberculous lesion was observed in a total of 31 animals and this give an overall prevalence of 7 .75 %.The tubercle lesion was detected in 21 (67.7%) mediastinal , 4 (12.9%) trachibronchial , 3 ( 9.67%) mesenteric and 1 (3.2%) hepatic lymph nodes and 2 (6.45%) lung tissues. The highest detection rate was recorded in mediastinal and the lowest in hepatic lymph node. In this study a total of 2 lung tissues and 29 lymph node samples were collected and cultured to isolate mycobacterium, of these 4 (12.90%) samples were found positive for mycobacterium.The risk factors such as sex, age, and body condition were assessed in relation to the occurrence of bovine tuberculosis and found significantly (p<0.05) associated with the occurrence of this disease. In conclusion, the present study shows the potential risk of the disease for both animals and human beings live in the study area, and being female, old and medium body condition animal is more risk to be infected with bovine tuberculosis.