Contamination of free-range ducks by chlordecone in Martinique (FrenchWest Indies): A field study

The former use of chlordecone (CLD) in the French West Indies has resulted in long-term pollution of soils and subsequently of food chains. In contaminated areas, free-range ducks used to control weeds in orchards may be exposed to CLD through polluted soil ingestion. The question arises whether they may be consumed. Muscovy ducks were raised on a guava orchard planted on a soil moderately contaminated (410 ?g CLD/kg dry matter). Duckswere raised indoor up to 6 weeks of age and allowed to range freely outdoors thereafter. Twentynine females were sequentially slaughtered by groups of 2 to 5 ducks, after 4, 16, 19, 22 or 26 weeks spent in the orchard or after 16-17 weeks in the orchard followed by 3, 6 or 9 weeks in a closed shelter for depuration. CLD concentration increased from258 to 1051, 96 to 278, 60 to 169 and 48 to 145 ?g/kg fresh matter (FM) as the exposure through grazing increased from 4 to 22 weeks, in liver, abdominal fat and leg with and without skin, respectively. Eggs collected in the orchard contained up to 1001 ?g CLD/kg FM. All these values exceeded the MaximumResidue Limit (MRL) of 20 ?g/kg FM. CLD concentration in all tissues was divided by around 10within the 9-week confinement period. Despite this quite rapid decontamination, it is estimated that 12-13 weeks would be required to achieve the MRL in liver and in eggs, and 5-6 weeks in leg muscle. Such durations would be too long in practice. Thus, the consumption of products from free-range ducks should be avoided, even in areas mildly contaminated with CLD.

Bibliographic Details

Main Authors:	Jondreville, Catherine, Lavigne, Anaïs, Jurjanz, Stefan, Dalibard, Christophe, Liabeuf, Jean-Marie, Clostre, Florence, Lesueur Jannoyer, Magalie
Format:	article biblioteca
Language:	eng
Subjects:	Q03 - Contamination et toxicologie alimentaires, L01 - Élevage - Considérations générales, H02 - Pesticides, P02 - Pollution, P36 - Érosion, conservation et récupération des sols, canard de Barbarie, chlordécone, contamination chimique, sol pollué, toxicité du sol, toxicité par ingestion, chaîne alimentaire, pollution par l'agriculture, Desmodium, Chrysophyllum cainito, Psidium guajava, détoxification, Dimocarpus longan, http://aims.fao.org/aos/agrovoc/c_34459, http://aims.fao.org/aos/agrovoc/c_31305, http://aims.fao.org/aos/agrovoc/c_28319, http://aims.fao.org/aos/agrovoc/c_34324, http://aims.fao.org/aos/agrovoc/c_7201, http://aims.fao.org/aos/agrovoc/c_3868, http://aims.fao.org/aos/agrovoc/c_3014, http://aims.fao.org/aos/agrovoc/c_28744, http://aims.fao.org/aos/agrovoc/c_2211, http://aims.fao.org/aos/agrovoc/c_1605, http://aims.fao.org/aos/agrovoc/c_6315, http://aims.fao.org/aos/agrovoc/c_2219, http://aims.fao.org/aos/agrovoc/c_16539, http://aims.fao.org/aos/agrovoc/c_4635, http://aims.fao.org/aos/agrovoc/c_3081,
Online Access:	http://agritrop.cirad.fr/573569/ http://agritrop.cirad.fr/573569/1/document_573569.pdf
Tags:	Add Tag No Tags, Be the first to tag this record!