Susceptibility of African buffalo and Boran cattle to Trypanosoma congolense transmitted by Glossina morsitans centralis

• Published in: Veterinary parasitology Vol. 35; no. 3; pp. 219 - 231
• Main Authors: Grootenhuis, J.G., Dwinger, R.H., Dolan, R.B., Moloo, S.K., Murray, Max
• Format: Journal Article
• Language: English
• Published: Netherlands Elsevier B.V 01.03.1990
• Subjects: african buffaloes; Animals; bufalo africano; Buffaloes - immunology; Buffaloes - parasitology; buffle africain; Cattle; Cattle Diseases - immunology; Cattle Diseases - parasitology; Cattle Diseases - transmission; cebu; Diptera; Female; Glossina morsitans centralis; Glossinidae; Immunity, Innate; Insect Bites and Stings - pathology; Insect Bites and Stings - veterinary; Insect Vectors - parasitology; Male; pest resistance; resistance aux ravageurs; resistencia a las plagas; Skin - pathology; Time Factors; trypanosoma; Trypanosoma congolense; Trypanosomiasis, African - parasitology; Trypanosomiasis, African - transmission; Trypanosomiasis, African - veterinary; Trypanosomiasis, Bovine - parasitology; Trypanosomiasis, Bovine - transmission; Tsetse Flies - parasitology; vecteur; vectores; vectors; zebu; zebu cattle
• ISSN: 0304-4017; 1873-2550
• DOI: 10.1016/0304-4017(90)90057-I

Four African buffalo ( Syncerus caffer) and four Boran cattle ( Bos indicus) were each exposed to the bites of 10 tsetse flies infected with Trypanosoma congolense. Although both groups of animals became infected, the buffalo showed no clinical signs of trypanosomiasis while the cattle suffered from the disease characterized by pronounced skin reactions, high parasitaemia and severe anaemia. The prepatent periods in the buffalo varied from 18 to 27 days in comparison with 11 to 14 days in the cattle. In the buffalo, skin reactions were only detectable by histological examination of skin biopsies, the peak of parasitaemia was at least a hundredfold below that in cattle and after 54 days parasites were no longer detected. In contrast, the cattle had a continuous high parasitaemia until they were treated with a trypanocidal drug 60 days after infection. Neutralizing a antibody to metacylic trypanosomes appeared in the buffalo during the prepatent period, 15–20 days after infection, whereas in cattle neutralizing antibody was not detected until 10 days after the first peak of the parasitaemia, 25–30 days after infection.