They were slaughtered as soon as the first suspected cases appeared on Friday.
Ms Cauzaubon, herself a duck farmer, added: “Having animals under cover does not prevent the introduction of the virus [into the farms] but reduces its spread.
“We must be very vigilant, but also remain confident, because we are not in the same situation as the previous crisis.”
A control zone has since been put in place in 34 parts of the region, including a 3km protection zone and a 10km surveillance zone around the outbreaks.
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