The food industry is being asked to reconsider how they treat crustaceans after Belfast researchers found evidence that crabs are likely to feel pain.

It’s a question of traceability as Conor Ryan plots the route taken by the Food Safety Authority which led to it discovering horse and pig DNA in burgers

Vets from the Department of Agriculture are taking samples and interviewing management from one of the country’s biggest processing plants to establish how horse meat ended up in beef burgers.

Tesco Ireland said last night it will not take any more stock from the Co Monaghan factory which produced the burgers until it learns how the horse meat got into the burgers.

Beef burgers for sale in Irish branches of Tesco were found to contain 29% horsemeat, after the Food Safety Authority of Ireland (FSAI) did a spot-check on beef products for sale in supermarkets.