Mae Lesley Griffiths, Gweinidog yr Amgylchedd, Ynni a Materion Gwledig, wedi cyhoeddi manylion menter newydd ar gyfer mynd i'r afael ag ymwrthedd i wrthfiotigau mewn anifeiliaid ac yn yr amgylchedd.
A new initiative to prevent antibiotic resistance to bacteria in animals and its spread in the environment has been set up, Minister for Environment, Energy and Rural Affairs, Lesley Griffiths has announced.