Tuberculosis in dromedary camels slaughtered in Nigeria: a documentation of lesions at postmortem
In comparison with other livestock, tuberculosis (TB) in camels has not been extensively studied in Nigeria. Camels in the hands of Nigerian pastoralists share the livestock ecosystem and are increasingly becoming an important component of the sector. This study was designed to investigate the occurrence of TB lesions and animal-level risk of infection in slaughtered camel carcasses in one of the public abattoirs in Nigeria, from June to August 2016. A total of 212 camel carcasses comprising 82.5% (175/212) males and 17.5% (37/212) females were examined for tuberculous lesions. Of the carcasses examined, 33.5% (71/212) had TB lesions. The occurrence of lesions was most significantly associated with poor body condition (OR = 0.249; CI 0.134–0.454 [p < 0.001]). Distribution among anatomical sites of macroscopic lesions in the infected camels revealed three different pathological patterns as pulmonary (n = 51), abdominal (n = 11), and disseminated (n = 9) forms. Higher prevalence of gross TB lesions in camel carcasses highlights eminent threats to both animal and public health, pointing to an already existing risk of intra- and inter-species transmission of infection.
KeywordsTuberculosis Camels Nigeria
Authors gratefully acknowledge Dr. Fatima Bello (Mrs) (Director, Public Health Department) of Directorate of Animal Health and Livestock Development, Zamfara State, for her logistic supports. We are also very grateful to the extended contribution from Mohammed Dahiru Aminu, PhD (Cranfield University, Bedford, UK), who assisted in proofreading the manuscript text. We would like to thank all butchers and abattoir attendants from the study area for their cooperation.
All authors designed the study. Ibrahim Ahmad conducted the field work, wrote the manuscript text, and prepared the figures. Umar Mohammed Chafe and Mohammed Babashani performed the data analysis. Caleb Ayuba Kudi, Yusuf Yakubu, and Aminu Shittu coordinated the data collection and edited the manuscript text. The final manuscript was read and approved by all authors.
Compliance with ethical standards
The findings and conclusions in this study are those of the authors.
Conflict of interest
The authors declare that they have no conflict of interest.
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