The FSA's stance on cloning is unenforceable and should not be championed by UK ministers during ­upcoming EC discussions, the regulator's board has admitted.

Discussions on cloning rules take place in Brussels shortly, and the FSA will be issuing recommendations to ministers. FSA chairman Lord Rooker said it would be irresponsible to advise ministers to argue for all generations of progeny to be authorised before entering the food chain, as the FSA's current interpretation of EU novel food laws requires.

The global trade in ­semen and embryos had made a mockery of any attempt to trace whether an animal had a cloned relative, and ministers would be unable to answer questions about how they would deliver traceability across all generations.

"You can't regulate what you can't count or can't check on," he told an FSA board meeting last week.