Representatives of the farming unions were in Brussels at the invitation of the Plaid MEP to give evidence before the European Parliament's Agriculture Committee.
Ms Evans is taking part in a cross party campaign in the European Parliament to oppose the European Commission's scheme for compulsory electronic tagging (EID) for sheep and goats.
Speaking after the meeting, Jill Evans said:
"The European Commission should send a delegation to Wales to see for themselves how unworkable this scheme would be in practice. Farmers representatives presented a powerful case for making the scheme voluntary in countries like Wales. There is no disagreement with the need for traceability but the scheme we have now is adequate for that.
"I visited one of the pilot schemes in Wales recently and it's clear that the technology is not ready for this project, as well as the massive practical difficulties of electronic tagging on hill farms."
Dylan Rees, Plaid's Parliamentary candidate for Ynys Môn added:
"I was delighted to see the cross-party support for the EID legislation to be made voluntary rather than compulsory. Local farmers on Anglesey have told me that this legislation is unworkable and cost prohibitive. My concern is that the implementation of the legislation will ultimately result in sheep farmers leaving the industry. As a result the agricultural industry on Anglesey will inevitably decline."
Diwedd/End.
NOTES
Jill Evans MEP represents the whole of Wales in the European Parliament.
The Plaid MEP is co-sponsoring a Written Declaration in the European Parliament (similar to an Early Day Motion at Westminster) calling for sheep EID to be voluntary rather than compulsory. and they are asking other MEP's to sign.