Editing Tsetse fly (section)

===In domestic animals===
{{main article|Animal trypanosomiasis}}
Animal [[trypanosomiasis]], also called ''nagana'' when it occurs in [[cattle|bovine cattle]] or [[horse]]s or ''sura'' when it occurs in domestic [[pig]]s, is caused by several trypanosome species. These [[disease]]s reduce the growth rate, [[milk]] productivity, and strength of [[farm]] animals, generally leading to the eventual [[death]] of the infected animals. Certain species of cattle are called ''[[trypanotolerance|trypanotolerant]]'' because they can survive and grow even when infected with trypanosomes although they also have lower productivity rates when infected.

The course of the disease in animals is similar to the course of [[African trypanosomiasis|sleeping sickness]] in humans.

''Trypanosoma congolense'' and ''Trypanosoma vivax'' are the two most important species infecting bovine cattle in [[sub-Saharan Africa]]. ''Trypanosoma simiae'' causes a virulent disease in [[swine]].

Other forms of animal trypanosomiasis are also known from other areas of the globe, caused by different species of trypanosomes and transmitted without the intervention of the tsetse fly.

The tsetse fly vector ranges mostly in the central part of Africa.

[[Trypanosomiasis]] poses a considerable constraint on livestock agricultural development in tsetse fly-infested areas of sub-Saharan Africa, especially in West and Central Africa. International research conducted by [[ILRI]] in [[Nigeria]], the [[Democratic Republic of the Congo]] and [[Kenya]] has shown that the [[N'Dama]] is the most resistant breed.<ref>{{Cite web |last=Agyemang |first=K. |year=2004 |title=Trypanotolerant livestock in the context of trypanosomiasis intervention strategies |url=https://openknowledge.fao.org/handle/20.500.14283/y5832e |access-date= |series=PAAT Technical and Scientific Series, No. 7. |publisher=FAO |publication-place=Rome}}</ref><ref>{{Cite web|url=https://www.slideshare.net/mobile/ILRI/animal-genetic-resources-characterization-and-conservation-research-in-africa-an-overview|title=Animal genetic resources characterization and conservation research i...|website=Slideshare.net|date=9 January 2012|access-date=12 November 2020}}</ref>