Tropical Animal Health and Production

, Volume 44, Issue 7, pp 1593–1598 | Cite as

African swine fever among slaughter pigs in Mubende district, Uganda

  • Adrian Muwonge
  • Hetron M. Munang’andu
  • Clovice Kankya
  • Demelash Biffa
  • Chris Oura
  • Eystein Skjerve
  • James Oloya
Original Research

Abstract

Owing to frequent reports of suspected outbreaks and the presence of reservoir hosts and vectors (warthogs, bushpigs and O. moubata ticks), African swine fever (ASF) is believed to be an endemic disease in Uganda. There have, however, been very few studies carried out to confirm its existence in Uganda. This study was carried out to describe the prevalence of ASF based on pathologic lesions and analysis of serum samples from slaughtered pigs during a suspected outbreak in the Mubende district of Uganda. The study was based on visits to 22 slaughterhouses where individual pigs were randomly selected for a detailed ante-mortem and post-mortem inspections. Sera were also collected for laboratory analysis. A total of 997 pigs (53.7% male and 46.3% female) were examined for lesions suggestive of ASF and sero-positivity of sera for ASF antibodies. The sera were tested using enzyme-linked immunosorbent assay (ELISA) and positive samples were further confirmed with an immunoblot assay. The results showed that 3.8% (38/997) of the pigs examined had clinical signs and post-mortem lesions suggestive of ASF. Two of 997 (0.2%) sera analysed were positive for ASF antibodies. Of the sub-counties investigated, Bagezza (12%) and Kiyuni (11%) had the highest prevalence of lesions suggestive of ASF based on ante- and post-mortem examination results, while Mubende town council (1.7%) had the lowest. This study found a low number of pigs (3.8%) with lesions suggestive of ASF at slaughter and an even lower number of pigs (0.2%) that were seropositive at slaughter, however a significantly higher number of pigs were slaughtered during the outbreak as a strategy for farmers to avoid losses associated with mortality.

Keywords

Sero-prevalence African swine fever Pigs Uganda 

References

  1. Awa, D.N., Njoya, A.C., Tama, N., and Ekue, F.N., 1999. Diseases in north Cameroon: the health status of pigs in north Cameroon, PigTrop for Agricultural Research for Development CIRAD, http://pigtrop.cirad.fr/subjects/animal_health/diseases_in_north_cameroon
  2. Carlos, M., 2009. Evaluation and controlling the risk of African swine fever in the EU, ASFRISK project report. http://www.asfrisk.eu/index.php?option=com_content&view=category&layout=blog&id=1&Itemid=187
  3. El Swalhy, A., Berhuanu, B., Lewa, A., Boussini, H., Oduor, A., Baboucar, J., Oumou, S., Simplice, N., Chibeu, D., 2008. Pan African Animal Health Yearbook, African Union Interafrican Bureau for Animal Resources, 2, 11–12Google Scholar
  4. Fasina, F.O., Shamaki, D., Makinde, A.A., Lombin, L.H., Lazarus, D.D., Rufai, S.A., Adamu, S.S., Agom, D., Pelayo, V., Soler, A., Simón, A., Adedeji, A.J., Yakubu, M.B., Mantip, S., Benshak, A.J., Okeke, I., Anagor, P., Mandeng, D.C., Akanbi, B.O., Ajibade, A.A., Faramade, I., Kazeem, M.M., Enurah, L.U., Bishop, R., Anchuelo, R., Martin, J.H., Gallardo, C., 2010. Surveillance for African Swine Fever in Nigeria, 2006–2009, Transboundary and Emerging Diseases, 57, 244–253PubMedGoogle Scholar
  5. Feran, J., and Bastos, A.D.S., 2009. Role of wild suids in the epidemiology of African Swine Fever. Ecohealth, 10393–103409Google Scholar
  6. Gallardo, C., Ademun, A.R., Nieto, R., Raquel, N., Noelina, N., Marisa, A., Elena, M., Virginia, P., and Richard, P.B., 2011. Genotyping of African swine fever virus (ASFV) isolates associated with disease outbreaks in Uganda in 2007. African Journal of Biotechnology, 10, 3488–3497Google Scholar
  7. Kateregga, D., 2010. Lake Wamala Uganda, Global Nature Fund, http://www.globalnature.org/29791/Living-Lakes/Network-EastAfrica/Wamala/02 vorlage.asp. Accessed on 9/10/10
  8. Lubisi, B.A., Bastos, A.D.S., Dwarka, R.M., and Vosloo, W., 2007. Intra-genotypic resolution of African swine fever viruses from an East African domestic pig cycle: a combined p72-CVR approach. Virus Genes, 35, 729–735PubMedCrossRefGoogle Scholar
  9. Mannelli, A., Sotgia, S., Patta, C., Sarria, A., Madrau, P., Sanna, L., Firinu, A., Laddomada, A., 1997. Effect of husbandry methods on seropositivity to African swine fever virus in Sardinian swine herds. Preventive Veterinary Medicine, 32, 235–241PubMedCrossRefGoogle Scholar
  10. Mannelli, A., Sotgia, S., Patta. C., Oggiano, A., Carboni, A., Cossu, P., Laddomada, A., 1998. Temporal and spatial patterns of African swine fever in Sardinia. Preventive Veterinary Medicine, 35, 297–306PubMedCrossRefGoogle Scholar
  11. Mugisha, O.R., 2007. Uganda districts: information handbook. Fountain Publishers, Kampala, pp. 139–141Google Scholar
  12. Muwonge, A., Kankya, C., Godfroid, J., Berit, D., Opuda-Asibo, J., Biffa, D., Ayanaw, T., Munyeme, M., Skjerve., 2010. Prevalence and associated risk factors of mycobacterial nfections in slaughter pigs from Mubende district in Uganda. Tropical Animal Health and Production, 42, 905–913PubMedCrossRefGoogle Scholar
  13. OIE, 2008. Manual of Diagnostic Tests and Vaccines for Terrestrial Animals. Office of International Eepizootics Terrestrial Manual, pp. 1069–1082Google Scholar
  14. OIE, 2010. Disease timelines: African swine fever in worldwide between 2005 and 2010, Office of International Epizootics. http://www.oie.int/wahis/public.php?WAHIDPHPSESSID=b788b3db2fd9729dfbcfecf68d3215b2&page=disease_timelines&disease_id=12&empty=225.
  15. Penrith, M.L., Thomson, G.R., and Bastos, A.D.S., 2005. African swine fever. In: Coetzer, J.A.W., Tustin, R.C., eds., Infectious diseases of livestock. Oxford University Press, Southern Africa, 2, 1087–1119Google Scholar
  16. Penrith, M.L., Gurbeti, V., Depner, K., and Lubroth, J., 2009. Preparation of African Swine fever contingency plans. Food and Agriculture Organization (FAO) of the United Nations, 8, 1–69Google Scholar
  17. Solenne, C., Weiland, B., De-Glanville, W., 2009. African swine fever: how can global spread be prevented? Philosophical Transactions of the Royal Society Biological Sciences 1530, 2863–2696Google Scholar
  18. Swai, E.S., Mrosso, A., Njau, P., Mbise, A., Kessy, V., Massambu, J., 2005. A cross sectional study on African Swine fever (ASF) in domestic pigs in Northern Tanzania. Bulletin Animal Health Production, 53, 43–49Google Scholar
  19. Waiswa, C., Fevre, E.M., Nsadha, Z., Sikasunge, C.S. and Willingham, A.L., 2009. Porcine cysticercosis in southeast Uganda: seroprevalence in kamuli and kaliro districts. Journal of Parasitology Research, 2009, 1–5CrossRefGoogle Scholar

Copyright information

© Springer Science+Business Media B.V. 2012

Authors and Affiliations

  • Adrian Muwonge
    • 1
  • Hetron M. Munang’andu
    • 2
  • Clovice Kankya
    • 3
  • Demelash Biffa
    • 1
  • Chris Oura
    • 4
  • Eystein Skjerve
    • 1
  • James Oloya
    • 5
  1. 1.Department of Food Safety and Infection BiologyNorwegian School of Veterinary ScienceOsloNorway
  2. 2.Department of Basic Sciences and Aquatic Medicine, Section of Aquatic Medicine and NutritionNorwegian School of Veterinary ScienceOsloNorway
  3. 3.Department of Veterinary Public Health and Preventive Medicine, Faculty of Veterinary MedicineMakerere UniversityKampalaUganda
  4. 4.Institute for Animal HealthPirbright laboratorySurreyUK
  5. 5.Department of Epidemiology and Biostatistics/Population Health, College of Public health, 132 Coverdell CentreUniversity of GeorgiaAthensUSA

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