Pa ddata sydd gan Lywodraeth Cymru ar effaith economaidd nematodau gastroberfeddol mewn diadelloedd defaid?
Wedi'i ateb gan Y Gweinidog Materion Gwledig a Gogledd Cymru, a’r Trefnydd | Wedi'i ateb ar 26/05/2023
The Welsh Government does not hold data on the economic impact of gastrointestinal nematodes. General data on the profitability of different farming types is published annually in the Farm Business Survey.