Health and productivity of traditionally managed Djallonke sheep and West African dwarf goats under high and moderate trypanosomosis risk

Veterinary Parasitology
S OsaerL Darboe

Abstract

Trypanosome infections, packed red cell volume levels (PCV), body weight and nematode faecal egg counts of village-based small ruminants were monitored in two areas in The Gambia with either moderate or high trypanosomosis risk for 24 and 30 months respectively. Outflows from the flock and new-born animals were recorded and data on housing and management were compiled. Reported mortality rates were higher in goats than in sheep, but for both species highest in the moderate risk area. The peak of trypanosome infections lagged the peak of tsetse densities by 1-3 months in both areas. Trypanosoma vivax was the predominant species found in the infected animals, followed by T. congolense. Trypanosome prevalence was, in general, higher in sheep than in goats but only significantly higher during Year 1 in the moderate risk area. Trypanosome infection reduced the PCV level significantly and seasonal effects indicated significantly lower PCV levels during the rains. Trypanosome infection significantly depressed weight gain in both species at periods where infection rates were highest. In both species considerably lower weight gains were observed during the rainy season. Abortion rates were higher in goats than in sheep in both study sit...Continue Reading

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Citations

Apr 11, 2001·Small Ruminant Research : the Journal of the International Goat Association·J JaitnerL Dempfle
Jan 24, 2014·PloS One·Marieke KlaasenArjan Stegeman
Dec 1, 2006·Annals of the New York Academy of Sciences·Carlos GutierrezPhilippe Büscher
Sep 8, 2004·Veterinary Parasitology·L Bell-SakyiA R Walker
Feb 10, 2009·Trends in Parasitology·Stanny GeertsDéthié Faye

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