Eindhoven-based food group Vion said supplying Asda represented about 50% of business at its Gaerwen plant.

BBC: Wales

The Gaerwen abattoir is one of the largest in Britain, mainly supplying supermarket chains.

BBC: News Online

Twelve months ago the first case of foot-and-mouth in Wales was confirmed at an abattoir on Gaerwen on Anglesey.

BBC: Fresh fears on disease anniversary

Earlier this month the Eindhoven-based food group Vion confirmed that supplying Asda represents about 50% of business at the Gaerwen plant.

BBC: Butcher at work

Eddie Ennis, site director at Welsh Country Foods, said the closure at Gaerwen was "a very sad day for all those involved".

BBC: Anglesey Vion meat plant to close with 310 jobs lost

The Gaerwen site was one of two on Anglesey owned by Vion.

BBC: Anglesey Vion meat plant to close with 310 jobs lost

At Anglesey there are 336 staff at Llangfeni and 377 at Gaerwen.

BBC: Vion announces UK sell-off leading to job fears

The final stages of the cull of 40, 000 animals on Anglesey - which involves the Gaerwen abattoir - is expected to resume on Monday.

BBC: News Online

In north Wales, the Environment Agency is investigating how hundreds of young brown trout and eels died in a stream near the Gaerwen abattoir on Anglesey.

BBC: News Online

An exclusion zone has been set up around the Welsh Country Foods plant at Gaerwen, near Menai Bridge, which is at the centre of the first foot-and-mouth scare to hit Wales.

BBC: News Online

The owners of the farm on Llanddaniel, near Gaerwen on the island - which has been badly hit by the outbreak where more than 40, 000 sheep have been culled - had been part of a group who successfully argued against the slaughter of their 60 ewes, lambs and three cattle.

BBC: Farmer criticises 'mobile burning'