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This document is intended for educational use and is a handbook to be used by researchers, engineers, and technicians of national services, development professionals or students who are dealing with demographic parameters (reproduction, mortality, etc.) of tropical livestock ruminant (cattle, sma...


Lesnoff, MatthieuSaley, M.Adamou, K.N'Djafa Ouga, H.Ayantunde, Augustine A.Gerard, Bruno G.[12 Mo. A retrospective method for estimating demographic parameters in tropical ruminant livestock population. Version 3.1]12 Mo. A retrospective method for estimating demographic parameters in tropical ruminant livestock population. Version 3.1

This document is the user's manual of DynaMod, which is a simple tool for demographic projection of tropical livestock populations. DynMod is intended to researchers, developers, engineers and technicians of national services, or students dealing with demography of tropical livestock. DynaMod rep...


Lesnoff, Matthieu[DynMod: A tool for demographic projections of tropical livestock populations under Microsoft Excel. User's Manual - Version 1]DynMod: A tool for demographic projections of tropical livestock populations under Microsoft Excel. User's Manual - Version 1
Bonnet, P.Jean-Baptiste, S.Lesnoff, MatthieuWorkalemu, A.[Determining the reliable scale when aggregating data to model risk of disease spread through mapping of animals movements. Combined use of Ripley K and Besag L functions applied on farm points and distance distribution study on animal exchange function]Determining the reliable scale when aggregating data to model risk of disease spread through mapping of animals movements. Combined use of Ripley K and Besag L functions applied on farm points and distance distribution study on animal exchange function
Bonnet, P.Workalemu, A.Lesnoff, Matthieu[How to better target health interventions in developing countries. An illustration of the use of segregation and concentration indexes to assess socio-spatial differentiation and discuss better access to sub groups at risk]How to better target health interventions in developing countries. An illustration of the use of segregation and concentration indexes to assess socio-spatial differentiation and discuss better access to sub groups at risk

Linear-multilevel models (LMM) are mixed-effects models in which several levels of grouping may be specified (village, herd, animal, ...). This study highlighted the usefulness of graphical methods in their analysis through: (1) the choice of the fixed and random effects and their structure, (2) ...


Lancelot, R.Lesnoff, MatthieuTillard, E.McDermott, John J.[Graphical approaches to support the analysis of linear-multilevel models of lamb pre-weaning growth in Kolda (Senegal)]Graphical approaches to support the analysis of linear-multilevel models of lamb pre-weaning growth in Kolda (Senegal)

A field experiment was carried out in Kolda (southern Senegal) from July 1986 to July 1988. Its goals were to: (1) describe the patterns of mortality of female Guinean goats by age, season and year; (2) assess preventive measures against respiratory diseases and gastrointestinal parasitism in red...


Lancelot, R.Lesnoff, MatthieuMcDermott, John J.[Use of Akaike information criteria for model selection and inference. An application to assess prevention of gastrointestinal parasitism and respiratory mortality of Guinean goats in Kolda, Senegal]Use of Akaike information criteria for model selection and inference. An application to assess prevention of gastrointestinal parasitism and respiratory mortality of Guinean goats in Kolda, Senegal

Contagious bovine pleuropneumonia (CBPP) is a major threat for cattle health and production in Africa. This disease is caused by the small-colony type of Mycoplasma mycoides subspecies mycoides (MmmSC). Transmission occurs from direct and repeated contacts between sick and healthy animals. Vete...


Lesnoff, MatthieuLaval, G.Bonnet, P.Abdicho, S.Workalemahu, A.Kifle, D.Peyraud, A.Lancelot, R.Thiaucourt, Francois[Within-herd spread of contagious bovine pleuropneumonia in Ethiopian highlands]Within-herd spread of contagious bovine pleuropneumonia in Ethiopian highlands

Demographic parameters are useful for assessing productivity and dynamics of tropical livestock populations. Common parameters are the annual instantaneous hazard rates, which can be estimated by m/T (where m represents the number of the considered demographic events occurred during the year and ...


Lesnoff, Matthieu[Evaluation of 12-month interval methods for estimating animal-times at risk in a traditional African livestock farming system]Evaluation of 12-month interval methods for estimating animal-times at risk in a traditional African livestock farming system

Periodic matrix population models are a useful approach to modelling cyclic variations in demographic rates. Caswell and Trevisan [1] introduced the perturbation analysis (sensitivities and elasticities) of the per-cycle population growth rate for such models. Although powerful, their method can...


Lesnoff, MatthieuEzanno, P.Caswell, H.[Sensitivity analysis in periodic matrix models: A postscript to Caswell and Trevisan]Sensitivity analysis in periodic matrix models: A postscript to Caswell and Trevisan

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