"We needed something that would catch peoples attention and be a bit of fun," Weaver told the BBC.
"Asda were not very happy about it but no one asked us to leave. The cows caused a bit of a spectacle in the aisles and children were crowding round to stroke them," Weaver told the Express & Star newspaper. "But the animals were very well behaved, they are used to crowds from being at shows, and there were no safety issues."
Staffordshire Police said officers responded to the store about 12:30 p.m. Sunday on a report of cows in the store and the officers remained on scene "to ensure that the protest remained peaceful and minimal disruption was caused to the general public."
"Milk has been devalued by a number of retailers and is a key item being used in an aggressive supermarket price war," Weaver said. "The four-pint carton [half a gallon] is offered by Asda, Morrisons, Aldi, Lidl and Iceland for 89p [$1.39], cheaper than water, and a slap in the face to farmers."
Weaver said the protest visited several other local markets.
Asda issued a statement in response to the protest saying the price in the store is unrelated to the price paid to farmers.
"Our milk is supplied by the Arla farmer cooperative. The Arla dairy cooperative is owned by farmers. We moved to this model after guidance from those who were supplying us and means the price received by our farmers is set by their own cooperative business," the statement said. "They receive an on-account payment for their milk and take an equal share of any remaining profit. There is no link between retail prices and farmgate price."
