Agritrop
Home

Dynamics of a sheep population in a Sahelian area (Ndiagne district in Senegal) : a periodic matrix model

Lesnoff Matthieu. 1999. Dynamics of a sheep population in a Sahelian area (Ndiagne district in Senegal) : a periodic matrix model. Agricultural Systems, 61 (3) : pp. 207-221.

Journal article ; Article de revue à facteur d'impact
Full text not available from this repository.

Abstract : The demography of livestock populations in Sahelian areas is highly sensitive to periodic stresses generated by climatic fluctuations. A deterministic age-transition matrix model which explicitly accounts for within-year demographic variability was developed. The annual cycle was divided into a number of 24 two-week phases and the annual projection matrix was the product of the 24 projection matrices for each phase. This model was applied to an extensively managed sheep population in North Senegal. Results such as growth rates, age structures and population size projections were compared to field data. We showed that such models can be useful in exploring demographic patterns and thus be powerful descriptive tools for livestock dynamic analysis in periodic environmental variations. (Résumé d'auteur)

Mots-clés Agrovoc : Démographie, Environnement, Modèle de simulation, Caprin, Ovin, Stress thermique

Mots-clés géographiques Agrovoc : Sénégal

Classification Agris : U10 - Computer science, mathematics and statistics

Auteurs et affiliations

  • Lesnoff Matthieu, CIRAD-EMVT-PPA (FRA)

Autres liens de la publication

  • Localisation du document : BA_RP878 [(Bibliothèque de Baillarguet)]

Source : Cirad - Agritrop (https://agritrop.cirad.fr/391837/)

View Item (staff only) View Item (staff only)

[ Page générée et mise en cache le 2021-01-14 ]