Publisher: Bachudo Science Co. Ltd

The Effects of Climatic Factors On The Occurrence and Gross Pathological Lesions In Bacterial Pneumonia of Ovine and Caprine Hosts In Zaria, Nigeria

Oiiji L. Obasi, Mashood A. Raji, T. Adogwa, A. J. Natala
KEYWORDS: Seasons, small ruminants, bacterial pneumonia.


'Tfle bacterial agents of ovine and caprine pneumonia and associated gross pathologic losions were studied for a period of ten years (1985-1995). Bacteriological data were obtained from the necropsy repoit books of the Microbiology and Pathology Diagnostic units of the Department of Veterinary Pathology and Microbiology, Ahmadu Bello University, Zaria, on 283 Pathologic lung samples. The major bacterial agents isolated from affected bvine lungs were E. coli 24.7%; Pasteurella multocida 17.3%; Arcanobacterium pyogenes 14.9% Streptococcus pyogenes 6.9%; and Neiseria cataffhalis 5.7% and from caprine lungs were E coli 26.6% Pasteurella multocida 13.8%; Staphy/ococus aureus 16.5%Arcanobacterium pyogenes 11.9% Str:eptococcus pyogenes 8.2%; and Proteu vulgaris 5.5%; There were more cases of ovine pneumonia (61.5%) than caprine (38.5%).ln both sheep and goat, more cases of pneumonia were recorded during the dry season, wtth the highest monthly average value for both occurring in January. Annual distribution of ovine Pneumonia was highest in 1990 (24.7%), followed by 1987 (21.8%), while caprine pneumonia was highest in 1990 (22.9%) followed by 1988 (21.1 %). The finding of this study, suggest a high susceptibility of small ruminants in Zaria to bacterial pneumonia during the early dry season and early rainy season. It Is recommended that adequate management measures should be instituted to protect stock during these periods of high vulnerability.

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