I am not a vet but have learned what works for our horses and wanted to pass it along in the hope it helps other horses make it through the winter. We live in the mountains where it snows in the winter and gets to 95 degrees in the summer. Hydration is the key to keeping a horse from colicing. We give them soup 3 to 4 times a day. Take warm water in a bucket and add some apples for flavor or supplemements like safe choice or alfalfa pellets. Dump it in a clean bowl and watch them chow down and drink it all down. It does not have to be much flavor and sometimes warm water is all they want. It will hydrate them and warm them up a bit. Also provide ice free clean water and salt blocks. This takes very little effort and they will bond with you knowing you understand their needs. It will translate under saddle when you ride too. We love these boys and can't do enough to make them healthy. Also give Psyllium for 7 days in a row once a month and a good hoof supplement like Farriers fomula. We feed 3 -4 small meals a day with good quality A stack Alfalfa and Bermuda grass mix. Spread the meals