Depends on how old he is really. Is it the first time he`s had the tinned meat, if so it could be that. How old is he? I`d wait & see how things go today, if alls well then carry on with his normal feeding routine, if not then just let him have access to water, sweetened with honey. If he`s a pup & there`s any more runs ot he seems unwell in himself, don`t feed him & give the vet a ring.
Christine, Spain.
If the house/sheep had been recently wormed the chemicals could cause upset or real illness, whatever it was tho give his tum a little rest to settle & he should be fine :)
Christine, Spain.