Farmers affiliated with NFU Cymru have held a protest outside the Tesco base at the Royal Welsh Show.
The campaigners accuse supermarkets of stocking too much meat from outside the UK and going back on pledges made after the horsemeat scandal.
ITV News asked Tesco representatives for a response, but they declined to comment.
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After a calm and quiet night, tomorrow will be another dry and bright day with plenty of sunshine and warm temperatures.
We're just at the start of grass pollen season, with levels staying moderate over the next few days in the dry and warm weather.