What are the stakes for fodder in the management of the chlordecone crisis in the French West Indies ? | Quels sont les enjeux fourragers dans la gestion de la crise du chlordécone aux Antilles françaises ?
2022
Feidt, Cyril | Collas, Claire | M., Mantran | Y., Liber | Tournebize, Régis | Jurjanz, Stefan | A., Fourcot | R., Guido | A., Fournier | Bedell, Jean-Philippe | Unité de Recherches Animal et Fonctionnalités des Produits Animaux (URAFPA) ; Université de Lorraine (UL)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE) | GEOMATIK KARAÏB | DEAL de Guadeloupe | Agrosystèmes tropicaux (ASTRO) ; Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE) | Laboratoire d'Ecologie des Hydrosystèmes Naturels et Anthropisés (LEHNA) ; Université Claude Bernard Lyon 1 (UCBL) ; Université de Lyon-Université de Lyon-École Nationale des Travaux Publics de l'État (ENTPE)-Centre National de la Recherche Scientifique (CNRS)
The height of the forage harvest seems to be a determining factor in the contamination of cattle by chlordecone (CLD), which is not quantified in the part of the plant above 10 cm. Simulations based on a toxicokinetic model show that in order to respect the maximum value in cattle, the content in the forage must be lower than 10 mu g. kg(-1). This value is lower than the management threshold currently used for forage, which is aligned with the MRL for plant products (20 mu g. kg(-1)). Regarding the limit of quantification in plants (1 mu g. kg(-1)), it is sufficient for the management of the whole plant but does not currently allow progress on the knowledge of the contamination of the upper parts, while the literature shows a potential transfer in grasses to the tip of the leaves. Pending further results, the recommendation is not to cut too low (by grazing or mowing).
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