ABSTRACT
Four herds of Mbororo Zebu cattle (approximately 40 head each) in traditional situation of the Fulani breeders were treated over a 12 month period. Flumethrin Pour on was first used every three weeks during the rainy season and then deltamethrin Spot on was used every six weeks during the dry season. Pour on treatments might affect the age structure and feeding patterns of the neighbouring populations of G fuscipes. However, the treatments had no impact on the apparent density of flies. They changed neither the prevalence of trypanosome infection rates in cattle nor the hematocrit levels. This trial shows that, under these experimental conditions, insecticide treatments were not effective for the control trypanosomosis in cattle. Further trials should be carried out to assess the usefulness of this method when it is integrated with the trapping of tsetse flies.
Subject(s)
Insecticides/therapeutic use , Pyrethrins/therapeutic use , Trypanosomiasis, Bovine/prevention & control , Tsetse Flies , Animals , Animals, Wild , Cattle , Central African Republic/epidemiology , Horses , Humans , Insecticides/administration & dosage , Nitriles , Pyrethrins/administration & dosage , Reptiles , Ruminants , Seasons , Trypanosomiasis/epidemiology , Trypanosomiasis, Bovine/epidemiology , Trypanosomiasis, Bovine/transmissionABSTRACT
From 1987 to 1993, a survey on the feeding behavior of Glossina fuscipes fuscipes was conducted in the Central African Republic. A total of 556 blood-meal samples was analyzed by ELISA. According to the results, the number of blood meals from cattle was rather low (12% on average). During the rainy season, this number increased significantly and varied according to the sampling area. Along the riverine forests, this amounted to 5%, while blood meals from wild ruminants amounted to 87%. In the neighborhood of watering-places, the number of cattle blood meals reached 9-22%. Reptiles were found to be important hosts (17-35%). In all cases, man presented a non-negligible host (4-14%), similar to suidae (2-19%). The authors discuss the relevance of these results to risk of trypanosomes transmission.
