Investigations on the prevalence of bovine tuberculosis and brucellosis in dairy cattle in Dar es Salaam region and in zebu cattle in Lugoba area, Tanzania

A study between August 1995 and December 1997 included 343 dairy cattle on 20 farms in the Dar es Salaam region and 2289 zebu cattle on 39 bomas in the Lugoba area (coast region). The aim was to establish the prevalence of bovine tuberculosis (Mycobacterium bovis) and bovine brucellosis (Brucella ab...

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Published in:	Tropical animal health and production Vol. 32; no. 3; pp. 147 - 154
Main Authors:	Weinhäupl, I, Schöpf, K C, Khaschabi, D, Kapaga, A M, Msami, H M
Format:	Journal Article
Language:	English
Published:	United States Springer Nature B.V 01-06-2000
Subjects:	Agglutination Tests - veterinary Animal populations Animals Brucella abortus - immunology Brucella abortus - isolation & purification Brucellosis, Bovine - epidemiology Brucellosis, Bovine - microbiology Cattle Dairy cattle Dairy farms Female Livestock farming Milk - microbiology Mycobacterium bovis - immunology Mycobacterium bovis - isolation & purification Reactors Seroepidemiologic Studies Suburban Population Tanzania - epidemiology Tuberculin Test - veterinary Tuberculosis Tuberculosis, Bovine - epidemiology Tuberculosis, Bovine - microbiology Urban Population Tanzania
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Summary:	A study between August 1995 and December 1997 included 343 dairy cattle on 20 farms in the Dar es Salaam region and 2289 zebu cattle on 39 bomas in the Lugoba area (coast region). The aim was to establish the prevalence of bovine tuberculosis (Mycobacterium bovis) and bovine brucellosis (Brucella abortus). In the single intradermal tuberculin test (SIT), 0.9% (3/343) of the animals in Dar es Salaam tested positive and 1.2% (4/343) were doubtful. Positive reactors were found in 10% (2/20) of the farms. In the Lugoba area, 0.6% (14/2206) were positive and 6.8% (149/2206) doubtful, positive cases being found in 21% (8/39) of all bomas. In the slow agglutination test (SAT) for B. abortus, 14.1% (48/341) of the serum samples reacted positively in Dar es Salaam and 2.3% (8/341) were doubtful. Positive SAT reactors were identified on 25% (5/20) of the dairy cattle farms. In the Lugoba area, 12.3% (273/2221) proved to be positive SAT reactors and doubtful reactions were observed in 2.9% (64/2221). SAT-positive animals were detected on 87% (34/39) of all bomas. The prevalence in single herds in Dar es Salaam varied from 4.3% to 5.3% for the SIT and from 2.2% to 50% for the SAT. The prevalence in single herds in Lugoba area was between 1.1% and 2.9% for SIT and from 1.4% up to 62.1% for SAT. The two cattle populations differed significantly (p < 0.001) in the prevalence of both bovine tuberculosis and bovine brucellosis. Two cows that were positive reactors were slaughtered and subjected to post-mortem examination, and organ samples were bacteriologically cultured. The occurrence of Mycobacterium tuberculosis was confirmed by polymerase chain reaction (PCR) in both cows.
Bibliography:	ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23
ISSN:	0049-4747 1573-7438
DOI:	10.1023/A:1005231514467