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Mon, 27 Feb 2017
Byddwn ni'n edrych ar sut mae un ffermwr yn mynd ati i leihau'r defnydd o gyffuriau gwrthfiotig. Today's programme looks at how one farmer has reduced the use of antibiotics on his farm.
Darllediad diwethaf
Sad 4 Maw 2017
13:00