1: Use a water trough heater to prevent freezing in cold weather.
2: Insulate the water trough with a cover or thermal blanket.
3: Install a water circulator to keep water moving and prevent freezing.
4: Add salt to the water to lower the freezing point.
5: Use a solar-powered water trough heater for eco-friendly heating.
6: Place a heat lamp near the water trough to provide warmth.
7: Install an automatic waterer with a heating element.
8: Keep the water trough filled to prevent freezing.
9: Use a floating deicer to keep water trough from freezing.