Cattle ticks population and prevalence of Babesia spp amongst it vector: Rhipicephalus (Boophilus) microplus in a zone of Ivory Coast

The aim of this survey is to evaluate prevalence of Babesia spp in Rhipicephalus (Boophilus) microplus and the importance of ticks species existing in Bingerville area. In this cross sectional study, thirty six cattlefrom 6 farms have been sampled in Bingerville area (Ivory coast Southeast). From 511 ticks collected, 102 Ambyomma spp (19.97%) and 409 Rhipicephalus (Boophilus) microplus (80.03%) were identified. Then, theprevalence of Babesia spp parasites amongst Rhipicephalus (Boophilus) microplus was focused. With 120 engorged females of Rhipicephalus (Boophilus) microplus, 24 pools of 5 ticks each were done. The Giemsastain test had shown prevalences of 8.33% and 1.73% of Babesia spp respectively in pool and individual levels

Etude de la prévalence des infections à trypanosomes chez différentes espèces d'animaux sauvages du parc national de la Comoé en Côte d'Ivoire : résultats préliminaires sur la comparaison de trois méthodes de diagnostic

Si de nombreuses études portent sur la trypanosomoses chez les animaux domestiques, peu de rcherches ont été effectuées sur la faune sauvage d'Afrique occidentale. Les résultats préliminaires sur la comparaison de trois méthodes de dépistages des trypanosomes : le frottis de sang, la détection des antigènes circulants par le technique ELISA et l'isolement in vitro des trypanosomes par le "kit for in vitro isolation" (KIVI), chez les animaux sauvages du parc national de la Comoé en Côte d'ivoire, ont permis de confirmer l'existence de cette infection chez ces animaux sans toutefois identifier de façon précise les espèces de trypanosomes en cause. Des investigations ultérieures permettront d'affiner l'identification des souches de parasites isolées par KIVI. (Résumé d'auteur

Seasonal epidemiology of ticks and aspects of cowdriosis in N'Dama village cattle in the Central Guinea savannah of Côte d'Ivoire.

In the Central Guinea savannah of Côte d'Ivoire, cattle breeding started only approximately 30 years ago. The impact of parasitism on the overall health status and productivity of the trypanotolerant N'Dama cattle in this area is unknown. In close collaboration with national veterinary institutions and local farmers, we studied spectrum, burden and seasonal dynamics of ticks (including aspects of cowdriosis) on N'Dama village cattle. In a longitudinal study, three randomly selected cattle herds (traditional farming type) of one village were examined repeatedly for ticks. Spectrum, burden, seasonal epidemiology of ticks were assessed. In these traditional herds (which lack (ecto)parasite management), all animals were infested by ticks at monthly counts. Five different tick species were identified; the four genera in order of frequency were: Amblyomma (overall prevalence 96%), Boophilus (47%), Hyalomma (<1%) and Rhipicephalus (<1%). Amblyomma variegatum was the most-abundant tick on cattle in all seasons. Seroprevalence of Cowdria ruminantium was 31% (95% CI: 26, 36%). Most of the animals typically carried low tick burdens. N'Dama cattle seem well adapted to their environment and can resist the tick burdens under this traditional farming system

Epidémiologie des nématodes gastro-intestinaux des bovins dans la région centre de la Côte d'Ivoire

From February to December 1997, six head of N’Dama cattle originating from the Central zone of humid savanna in Côte d’Ivoire were examined postmortem monthly. Fourteen species/genera of parasites were identified: 8 nematodes, 2 trematodes, 1 cestode and 3 protozoa. All animals were infected with at least one of the following gastrointestinal nematodes: Haemonchus sp. (95%), Cooperia punctata (50%), Oesophagostomum radiatum (35.5%), Trichostrongylus axei (30%), Cooperia pectinata (8.1%) and Trichuris sp. (1.6%). Setaria labiatopapillosa was found in 30.6% of the animals examined, microfilaria in 24.1%, paramphistomes in 80.6% and Moniezia sp. in 15%. Trypanosomes and Babesia spp. were found in 11.2 and 3.6% of the animals, respectively. The egg counts and worm burden of gastrointestinal nematodes varied with peaks in May and September/October, i.e. during the rainy seasons. Young animals 1-3 years of age had higher worm burdens than animals over 3 years old (P < 0.05). No larval hypobiosis was detected. In spite of a favorable humid climate, the worm burden of this N’Dama cattle originating from an extensive husbandry system was relatively low. Anthelmintic treatments appear necessary in younger animals only