Can horses cope with sudden cold weather?
In winter, the weather can change dramatically for the worse. Out kept horses may suddenly find their grass is under a thick layer of snow so will need additional feeding. Hay is an obvious answer, but sometimes more nutrition is needed – keeping warm is very calorie demanding. Horses can survive and even thrive in what we consider to be very inhospitable conditions, but they do need plenty of feed to fuel them and keep them warm.
Horses have trillions of microbes which ferment fibre in their hind gut and this releases fuel, vitamins, gas and heat. It is like having a central heating boiler in their gut! However, not all fibre can be fermented – old, tough lignified fibre escapes this process. The fibre needs to be good quality, such as from early made hay and dried forages. Straw, late made and old hay may not be as effective at keeping the microbes fed and generating heat.