Fao animal production and health papers 1 animal breeding selected articles from world animal review 1977c e f s 2 eradication of hog cholera and african swine fever 1976e f s african animal trypanosomiasis selected articles from world animal review 1983 e f s 38. Not only is it important to evaluate the epidemiological role of game ani mals in african trypanosomiasis but also the fact that certain species are less susceptible or even refractile to trypanosome infection makes them important subjects for studies into the basic mechanisms of trypanotolerance animal production division east african . This article examines its potential for increasing individual pro duction and herd numbers as well as for determining the limits of the resis tance of cattle to the difficult sudan guinean climate and their tolerance to trypanosomiasis by presenting a ten year record of experimentation of jersey x ndama crossbreeding choice 1 of animals. Im portation from benin continued dur ing the period prior to the first world war the animals multiplied and spread throughout the mayombe region and other areas of south western zaire ndama cattle have a latent precocity and reach slaughter weight quickly when raised under good conditions max imum 58 percent and minimum 52 . African animal trypanosomiasis is a major livestock health challenge in africa the current perspective on the complexity of trypanosome parasites host interaction there is the need to identify refined trypanotolerant qtl to facilitate genomic selection
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