MEXICO CITY, June 10 (Reuters) - Mexico is holding up import permits for GMO corn, the head of the country's main farm lobby told Reuters, saying the government intended to apply a GMO ban to the grain used in animal feed despite contradictory comments by a top U.S. official.

In an interview, National Farm Council President Juan Cortina said among hundreds of agricultural product import permits awaiting a resolution are at least eight for genetically modified corn even though the ban is not set to go into effect for three years.

"They're not giving us extensions, there haven't been any administrative changes, they just don't respond," said Cortina, referring to delays of up to two years from the Health Ministry's sanitary protection agency, COFEPRIS, which is responsible for approving the permits.