The influence of trypanosome infection (Trypansoma congolense and/or T. vivax) in a high-risk area of Burkina Faso was studied in 66 Baoulé cattle (23 females) and 20 zebu. For 17 weeks the degree of parasitaemia was recorded weekly, together with haematocrit values, body weight, oestrous cycle...

Serological tests were carried out on 250 cattle from 227 herds in 1989: an American and a Cuban commercial card test for anaplasmosis and indirect immunofluorescence tests for Babesia bovis, Babesia bigemina and Trypanosoma vivax. In the card tests for anaplasmosis 108 (43%) of the 250 were...

Monthly blood tests and three-monthly weighings were used to assess the prevalence of Trypanosoma infection in ranched cattle at one location and cattle, goats and sheep raised by small farmers in 2 villages in Togo from December 1983 to December 1986. Prevalence in ranched cattle was 6%, in...

Trypanosoma infections (mostly T. vivax) of cattle were more readily detected in blood samples from the jugular vein than from the marginal ear vein, and in blood taken during the day. The most favourable time was 09.00.

The present level of trypanosomiasis in Togo is summarized. Exact data are not available for all regions but in cattle rates of up to 23% have been recorded. Most infections are Trypanosoma vivax, even among sheep and goats. Reductions in densities of the insect vectors have been achieved but...

Experimental infection of 19 one-year-old Brahman zebu with a strain of T. vivax isolated in Guyana resulted in moderate, transient fever, a decrease in packed cell volume and a rapid, severe weight loss (10-17 kg in one month). Other signs associated with the parasitaemia were diarrhoea, swollen...

A 2-year study, using the haematocrit centrifugation technique, on 100 animals born between October, 1984, and September, 1985, showed that their first trypanosome infections occurred between 1 and 24 weeks of age with 80% before 2 months old. Massive parasitaemias were detected in 10% of the...