La valeur alimentaire des fourrages : rôle des pratiques de culture, de récolte et de conservation
2009
Baumont, René | Aufrere, Jocelyne | Meschy, Francois
By combining cultivation, harvesting and conservation practices, the farmers are able to find the best compromise between the amount of herbage harvested and its feeding value. Present environmental requirements however do question a certain number of the practices that had made possible the intensification of the forage production. This paper is the synthesis of the present knowledge acquired by INRA on the feeding value of the forages and of its variation with the cultivation, harvesting and conservation practices. The recently completed INRA Tables supply values for the chemical composition, nutritive value, intake and mineral contents of a great diversity of forages and situations. These reference values make it possible to estimate the value of a forage and this can be made more accurate by the use of forecast tools when a chemical analysis is available. These data are essential for determining the diets of the animals and for analysing the forage systems. In the future, these tables should be complemented by data on the forecast of intake and digestion flows, and by other values characterizing the interest of the forages for the production of high-quality animal products.
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