Needs rise sharply in hot weather and for animals in milk. As a very rough guide per head per day:
- Cattle — commonly 40–100 litres, more for high-yielding dairy cows.
- Horses — around 25–50 litres.
- Sheep and goats — around 4–10 litres.
- Pigs — around 5–10 litres.
- Chickens — around a quarter to half a litre.
Size troughs by how many animals need to drink at once and check the supply in frosty weather.