[Livestock production systems and cattle productivity in rural northern Cameroon] | Systemes d'elevage et productivite des bovins en milieu paysan au Nord-Cameroun

animal husbandry methods animal production bovin cameroon cameroun camerun cattle feeding systems fertilidad fertilite fertility ganado bovino hatos herds mortalidad mortalite mortality performance de reproduction production animale reproductive performance reproductividad technique d'alimentation troupeau