Brazilian President Luiz Inacio Lula da Silva said on Wednesday he hoped a trade deal between the European Union and the South American Mercosur bloc would be signed by the end of this year, even as it faced opposition,

The Carrefour CEO's comments over an EU-Mercosur trade deal caused disruption to supplies of meat to Brazil stores.

The deal has been 25 years in the making and it aims to create one of the largest free trade zones in the world - but farmers in Europe are heavily opposed to sealing it, saying that they cannot compete with South American livestock producers.

The French giant has come out in support of farmers to block the prospect of meat imports from the South America bloc.

Poland opposes the EU-Mercosur free trade deal with South American countries in its current form, the prime minister said on Tuesday, joining France in standing against an agreement European farmers say will expose them to unfair competition.

Poland and France oppose the proposed EU-Mercosur trade agreement, citing concerns over unfair competition for European farmers. The deal, which Brazil is pushing to finalize, would open EU markets to South American agricultural products.

After more than 20 years of negotiations, the 27-nation European Union and Mercosur — a South American trade bloc of Brazil, Argentina, Paraguay, Uruguay and Bolivia — are still trying to finalize a major trade agreement that is sparking protests by European farmers.