Informations et ressources scientifiques
sur le développement des zones arides et semi-arides

Titre : Identification of the environmental and economic determinants of livestock mobility in Senegal

Auteur : García García Katherin Michelle

Etablissement de soutenance : Institut Agro (Montpellier)

Grade : Master Recherche Economie du développement agricole, de l’environnement et alimentation – EcoDEVA 2021

Résumé
Animal mobility is one of the main drivers of infectious livestock disease propagation. In West Africa, the production of ruminant livestock (cattle, sheep, and goat) is dominated by extensive farming systems where animals are frequently moved in response to environmental constraints (short- and long-distance transhumance) or for commercial reasons. Identifying reliable predictors of ruminant mobility is of critical importance for better informing disease surveillance and control strategies in this region. Senegal is part of the Sahel region where most of the West African small and large ruminant production occurs. In this study, we attempted at modelling the occurrence of movements of cattle and small ruminants between administrative units of Senegal using the registry of sanitary permits on movements collected by the Senegalese veterinary services in year 2019. Our objective was to assess whether, and under which conditions, the variation of the price and environmental variables (rainfall and biomass production) predicted changes in the number of cattle and small ruminants displaced between departments. To achieve our objective, we used two statistical methods : a generalized additive mixed effect model (GAMMs) and a gravity model.

Mots-clés : Mobilité ; Commercialisation ; Impact environnemental ; Ruminant

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