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Resistance and resilience of traditionally managed West African Dwarf goats from the savanna zone of northern Nigeria to naturally acquired trypanosome and gastrointestinal nematode infections

Published online by Cambridge University Press:  12 May 2010

J.M. Behnke ,
S.N. Chiejina ,
G.A. Musongong ,
P.A. Nnadi ,
L.A. Ngongeh ,
F.O. Abonyi  and
B.B. Fakae
J.M. Behnke*
Affiliation:
School of Biology, University of Nottingham, University Park, NottinghamNG7 2RD, UK
S.N. Chiejina
Affiliation:
Faculty of Veterinary Medicine, University of Nigeria, Nsukka, Nigeria
G.A. Musongong
Affiliation:
Department of Zoology, University of Maiduguri, Maiduguri, Bornu State, Nigeria
P.A. Nnadi
Affiliation:
Faculty of Veterinary Medicine, University of Nigeria, Nsukka, Nigeria
L.A. Ngongeh
Affiliation:
Faculty of Veterinary Medicine, University of Nigeria, Nsukka, Nigeria
F.O. Abonyi
Affiliation:
Faculty of Veterinary Medicine, University of Nigeria, Nsukka, Nigeria
B.B. Fakae
Affiliation:
Faculty of Veterinary Medicine, University of Nigeria, Nsukka, Nigeria
*
*Fax: +44 (0) 115 951 3252 E-mail: jerzy.behnke@nottingham.ac.uk
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Abstract

A survey was conducted of gastrointestinal nematode infections and trypanosomosis in Nigerian West African Dwarf (WAD) goats from the savanna region of the country. Animals were screened at two markets, Gboko and Akpagher, from the beginning of April until the end of September, coinciding with the end of the dry season and the first 5 months of the wet season. Of 1054 goats that were examined, 80.5% carried gastrointestinal (GI) nematodes belonging to the genera Haemonchus (61.0%), Oesophagostomum (21.0%) and Trichostrongylus (17.9%). Faecal egg counts (FEC) increased very slowly but significantly from April to maximum levels in September, and varied marginally between the two market sources. The majority of goats (68.8 and 70.1% at the two markets) had low FEC not exceeding 50 eggs/g (epg). FEC did not differ significantly between the sexes or between age classes. Packed cell volume (PCV) also declined significantly with month of the study, but was affected by host sex (a significant month × sex interaction) being generally higher in male animals throughout the period. There was a highly significant negative correlation between log10(FEC+1) and PCV, when all other factors had been taken into account. Body condition scores (BCS) also declined with month of the study, but there was a marked difference between the two sexes, with male animals generally showing a greater stability of BCS across the months compared with females. Trypanosome infections were found in only 4% of the goats and only during the rainy season. Most infections (92.86%) were caused by Trypanosoma brucei alone although T. vivax and T. congolense were occasionally detected. Overall, the majority of goats sampled each month maintained generally good body condition (BCS 3.0–5.0), normal or slightly reduced PCV, even when concurrently infected with trypanosomes and GI nematodes. However, four concurrently infected goats showed signs of overt anaemia during periods of peak infection, during the late rainy season, with marked reductions in PCV ( < 15%). Two of the infected goats were also in poor body condition with BCS of < 2.0. There was no evidence of additive or synergistic pathogenic effects of the two parasites. These results are discussed in the context of the unexpectedly strong resistance and resilience of the savanna WAD ecotype to its native strains of GI nematode and trypanosome parasites.

Type
Research Papers
Information
Journal of Helminthology , Volume 85 , Issue 1 , March 2011 , pp. 80 - 91
Copyright
Copyright © Cambridge University Press 2010

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References

Adah, M.I., Otesile, E.B. & Joshua, R.A. (1993) Susceptibility of Nigerian West African Dwarf and Red Sokoto goats to a strain of Trypanosoma congolense. Veterinary Parasitology 47, 177–188.CrossRefGoogle ScholarPubMed
Behnke, J.M., Chiejina, S.N., Musongong, G.A., Fakae, B.B., Ezeokonkwo, R.C., Nnadi, P.A., Ngongeh, L.A., Ebene, J.E. & Wakelin, D. (2006) Naturally occurring variability in some phenotypic markers and correlates of haemonchotolerance in West African Dwarf goats in a subhumid zone of Nigeria. Veterinary Parasitology 141, 107–121.CrossRefGoogle Scholar
Chiejina, S.N. (2001) The epidemiology of helminth infections of domesticated ruminants in the tropics with emphasis on parasitic gastroenteritis and fasciolosis. pp. 41–87in Chowdhury, N. & Tada, I. (Eds) Perspectives on helminthology. Enfield, USA, Science Publishers.Google Scholar
Chiejina, S.N., Fakae, B.B. & Eze, P.I. (1989) Development and survival of free-living stages of gastrointestinal nematodes of sheep and goats on pastures in the Nigerian derived savanna. Veterinary Research Communications 13, 103–112.CrossRefGoogle ScholarPubMed
Chiejina, S.N., Musongong, G.A., Fakae, B.B., Behnke, J.M., Ngongeh, L.A. & Wakelin, D. (2005) The modulatory influence of Trypanosoma brucei on challenge infection with Haemonchus contortus in Nigerian West African Dwarf goats segregated into weak and strong responders to the nematode. Veterinary Parasitology 128, 29–40.CrossRefGoogle ScholarPubMed
Chiejina, S.N., Behnke, J.M., Nnadi, P.A., Ngongeh, L.A. & Musongong, G.A. (2009) The responses of two ecotypes of Nigerian West African Dwarf goat to experimental infections with Trypanosoma brucei and Haemonchus contortus. Small Ruminants Research 85, 91–98.CrossRefGoogle Scholar
Dacie, J.V. & Lewis, S.M. (1995) Practical haematology. 8th edn.609 pp. Edinburgh, Churchill Livingstone.Google Scholar
Daniel, A.D., Joshua, R.A., Kalejaiye, J.O. & Dada, A.J. (1994) Prevalence of trypanosomiasis in sheep and goats in a region of northern Nigeria. Revu d'Élevage et de Médecine Vétérinaire des Pays Tropicaux 47, 295–297.Google Scholar
Dhollander, S., Bos, J., Kora, S., Sanneh, M., Gaye, M., Leak, S., Berkvens, D. & Geerts, S. (2005) Susceptibility of West African Dwarf goats and WAD × Saanen crosses to experimental infection with Trypanosoma congolense. Veterinary Parasitology 130, 1–8.CrossRefGoogle ScholarPubMed
Fakae, B.B. & Chiejina, S.N. (1993) The prevalence of concurrent trypanosome and gastrointestinal nematode infections in West African Dwarf sheep and goats in Nsukka area of eastern Nigeria. Veterinary Parasitology 49, 313–318.CrossRefGoogle ScholarPubMed
Fakae, B.B., Chiejina, S.N., Behnke, J.M., Ezeokonkwo, R.C., Nnadi, P.A., Onyenwe, W.I., Gilbert, F.S. & Wakelin, D. (1999) The response of Nigerian West African Dwarf goats to experimental infections with Haemonchus contortus. Research in Veterinary Science 66, 147–158.CrossRefGoogle ScholarPubMed
Fakae, B.B., Musongong, G.A., Chiejina, S.N., Behnke, J.M., Ngongeh, L.A. & Wakelin, D. (2004) Variability in the resistance of the Nigerian West African Dwarf goat to abbreviated escalating trickle and challenge infections with Haemonchus contortus. Veterinary Parasitology 122, 51–65.CrossRefGoogle ScholarPubMed
Faye, D., Osaer, S., Goosens, B., Van Winghem, J., Dorny, P., Lejon, V., Losson, B. & Geerts, S. (2002) Susceptibility of trypanotolerant West African Dwarf goats and F1 crosses with the susceptible Sahelian breed to experimental Trypanosoma congolense infection and interactions with helminth infections and different levels of diet. Veterinary Parasitology 108, 117–136.CrossRefGoogle ScholarPubMed
Fidalis, M.N. (2004) Genetic characterisation of West African Dwarf goats using microsatellite markers. MSc Thesis, Kenyatta University, Nairobi, Kenya.Google Scholar
Geerts, S., Osaer, S., Goosens, B. & Faye, D. (2008) Trypanotolerance in small ruminants of sub-Saharan Africa. Trends in Parasitology 25, 132–138.CrossRefGoogle Scholar
Goossens, B., Osaer, S., Jaiter, J., Ndao, M. & Geerts, S. (1997) The interaction of Trypanosoma congolense and Haemonchus contortus in Djallonke sheep. International Journal for Parasitology 27, 1579–1584.CrossRefGoogle ScholarPubMed
Goossens, B., Osaer, S., Ndao, M., Van Winghem, J. & Geerts, S. (1999) The susceptibility of Djallonke and Djallonke–Sahelian crossbred sheep to Trypanosoma congolense and helminth infection under different diet levels. Veterinary Parasitology 85, 25–41.CrossRefGoogle ScholarPubMed
Hansen, J. & Perry, B. (1994) The epidemiology, diagnosis and control of helminth parasites of ruminants. A handbook. 2nd edn.171 pp. Nairobi, Kenya, International Laboratory for Research on Animal Diseases.Google Scholar
Herbert, W.J. & Lumsden, W.H.R. (1976) Trypanosoma brucei: A rapid matching method for estimating the host's parasitaemia. Experimental Parasitology 40, 427–431.CrossRefGoogle Scholar
Kaufmann, J., Dwinger, R.H., Haliebeek, A., van Dijk, B. & Pfister, K. (1992) The interaction of Trypanosoma congolense and Haemonchus contortus infections in trypanotolerant N'Dama cattle. Veterinary Parasitology 43, 157–170.CrossRefGoogle ScholarPubMed
MAFF (1977) Manual of veterinary parasitological laboratory techniques. Ministry of Agriculture, Fisheries and Food Technical Bulletin No. 18. pp. 5–50. London, HMSO.Google Scholar
Nnadi, P.A., Kamalu, T.N. & Onah, D.N. (2007) Effect of dietary protein supplementation on performance of West African Dwarf (WAD) does during pregnancy and lactation. Small Ruminants Research 71, 200–204.CrossRefGoogle Scholar
Nwosu, C.O., Ogunrinade, A.F. & Fagbemi, B.O. (2001) Clinico-pathological studies of Haemonchus contortus infection in Red Sokoto (Maradi) goats. Nigerian Journal of Experimental and Applied Biology 2, 157–164.Google Scholar
Ogunsusi, R.A. (1979) Pasture infectivity with trichostrongylid larvae in the northern Guinea savanna of Nigeria. Research in Veterinary Science 26, 320–323.CrossRefGoogle ScholarPubMed
Rohlf, J.J. & Sokal, R.R. (1995) Statistical tables. 3rd edn.San Francisco, USA, W.H. Freeman.Google Scholar
Simukoko, H., Marcotty, T., Phiri, I., Geysen, D., Van den Vercruysse, J. & Bossche, P. (2007) The comparative role of cattle, goats and pigs in the epidemiology of livestock trypanosomiasis on the plateau of eastern Zambia. Veterinary Parasitology 147, 231–238.CrossRefGoogle ScholarPubMed
Soulsby, E.J.L. (1982) Helminths arthropods and protozoa of domesticated animals. 7th edn.London, UK, Baillière Tindall.Google Scholar
Wildman, E.E., Jones, G.M., Wagner, P.E., Boman, R.L., Troutt, H.F. & Lesch, T.N. (1982) A dairy cow body condition scoring system and its relationship to selected production characteristics. Journal of Dairy Science 65, 495–501.CrossRefGoogle Scholar