Abstract
Contagious caprine pleuropneumonia (CCPP), an Office International des Epizooties listed disease, can cause significant levels of morbidity and mortality in goats in Africa, the Middle East, and Western Asia. A cross-sectional study was conducted to determine the seroprevalence of CCPP, in two contrasting administrative districts of northern Tanzania, namely, Babati and Arumeru. A total of 337 serum samples were collected from January to July 2010, from apparently clinically healthy unvaccinated dairy goats breeds of different ages and sexes. Samples were subjected to monoclonal antibody-based competitive enzyme-linked immunosorbent assay for the specific measurement of antibodies to Mycoplasma capricolum subsp. capripneumoniae bacterium. The overall animal flock and village-level seroprevalence of CCPP was found to be 3.3 % [95 % confidence interval (CI) = 1.6-5.8], 9.6 % (95 % CI = 4.7-16.9), and 31.5 % (95 % CI = 15.6-56.5), respectively. There was no evidence (p = 0.659) of differences in seroprevalence between samples from the two administrative locations. Despite the fact that there was no significant difference (p > 0.05) in seropositivity between sex and age and between breeds sampled, there was a significant difference (p < 0.05) in seropositivity between the different physiological status groups examined with the non-lactating (dry) category of goats showing a higher seroprevalence. The findings of this survey revealed evidence of dairy goat exposure to M. capricolum subsp. capripneumoniae, although at a low prevalence. It is therefore advisable to include CCPP serology in the seromonitoring program so as to give a better indication of flock immunity. This should lead to the establishment of appropriate CCPP control measures in smallholder dairy goat flocks, which are increasingly being recognized for their value as a vital source of livelihood for resource poor livestock keepers in Tanzania.
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