Publication Date

1989

Description

Intensive continuous grazing is now well established in tem­perate climate countries (Parker, 1987). In semi-continental cli­mate, the adjustment of stocking rate to herbage growth is more complex (Mathieu and Jeannin, 1986). Moreover parcels are very often an assemblage of different types of permanent meadows. The question of animal behaviour in relation to this spatial heterogeneity, and the subsequent evolution of the pas­ture was posed. The perenniality of this grazing system is dependent on the trend of this evolution. An experimentation was carried out in the northeastern France (Mirecourt, Vosges) by INRA, in order to analyse spa­tial choices made by dairy cows on a large heterogeneous pas­ture, in relationship with production and quality of the sward, traffi.cability and evolution of botanical composition. Results on evolution of botanical composition and spatial frequentation of zones by cows during five years are given.

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Intensive Continuous Dairy Cows Grazing of an Heterogeneous Grassland: Botanical Evolution in Relation with the Animal Behavior

Intensive continuous grazing is now well established in tem­perate climate countries (Parker, 1987). In semi-continental cli­mate, the adjustment of stocking rate to herbage growth is more complex (Mathieu and Jeannin, 1986). Moreover parcels are very often an assemblage of different types of permanent meadows. The question of animal behaviour in relation to this spatial heterogeneity, and the subsequent evolution of the pas­ture was posed. The perenniality of this grazing system is dependent on the trend of this evolution. An experimentation was carried out in the northeastern France (Mirecourt, Vosges) by INRA, in order to analyse spa­tial choices made by dairy cows on a large heterogeneous pas­ture, in relationship with production and quality of the sward, traffi.cability and evolution of botanical composition. Results on evolution of botanical composition and spatial frequentation of zones by cows during five years are given.