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Analyser la diversité des trajectoires productives des femelles reproductrices: intérêts pour modéliser le fonctionnement du troupeau en élevage allaitant

Abstract : In suckling herds, farmers' production projects lead to highly variable animal productivity and production temporal pattern. The objective of this paper was to analyse the advantage of the notion of breeding female productive trajectory to model herd functioning based on six case studies. In the first part, six managements related to breeding and replacement practices are presented in relation to different production projects. In the second part, the analysis of management indicates that it is aimed at either decreasing or increasing within herd diversity of female productive trajectories. In the third part, consequences for modelling herd functioning are reviewed. Models of herd functioning should take into account farmers' decision as well as female biological behaviour. To simulate herd performances, it is therefore necessary to represent the groups of females with the same productive behaviour and the switch of females between these groups too. The productive trajectory is both an indicator of the rule for culling and an indicator of performance. The interaction between the fanner's decisions and female biology means taking into account management delayed effects on the sustainability of breeding female stock.
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Muriel Tichit, Stéphane Ingrand, Charles-Henri Moulin, Sylvie Cournut, Jacques Lasseur, et al.. Analyser la diversité des trajectoires productives des femelles reproductrices: intérêts pour modéliser le fonctionnement du troupeau en élevage allaitant. Productions animales, Institut National de la Recherche Agronomique, 2004, 17 (2), pp.123-132. ⟨hal-02678705⟩

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