Nutrition – Livestock need more calories to keep themselves warm, especially during some of the bitter cold winters. Discuss with your nutritionist or feed dealer the ideal options for your herd and facilities. You may consider sorting out thin animals in order to provide them more specialized care such as a higher energy ration and less crowded, draft-free shelter.
Water - Be sure to be checking your waterer or water tanks regularly for frozen water. Frozen water or excessively cold water significantly limit water and feed intake of our livestock. Animals, like humans, prefer the temperature of the water to be between 40 and 65 degrees F. Consider utilizing a thermometer to determine if tank heaters and waterer heating elements are in proper working order.
Shelter - Provide a shelter for livestock to get them out of the elements. A wind break is one solution; however, providing a roof is ideal. Providing deep, clean, dry bedding is essential to help keep the animals warm. Remember that a clean dry hair coat provides significantly better insulation than a dirty, wet hair coat. Also take time to evaluate your building for drafts that can create a problem. Look around doors, windows and curtains for areas that should be sealed.
There are two other things to keep in mind. One is that livestock that remain healthy throughout winter can fair cold temperatures more efficiently. Work with your veterinarian to keep livestock in tip top shape and up-to-date on their vaccinations. The other thing to consider is that with cold temperatures comes ice! Ice creates unsafe walking surfaces for both your livestock and yourself. Consider ruffing up the surface and adding sand or gravel for traction.
Source : umn.edu