It is likely that more deformed lambs and calves will be born in Wales this year as a result of infection of sheep and cows in 2012.
Mae’n debygol y bydd rhagor o ŵyn a lloi wedi’u camffurfio yn cael eu geni yng Nghymru eleni am fod eu mamau wedi cael eu heintio gan y clefyd SBV yn 2012.