Please choose the correct ending to complete the given sentence: Pets and Animals: [header] How to feed your horse during show season [title] Feed your horse its regular diet while on the road or at shows. [step] When you are traveling to an event or while at a show, it is important that your horse's diet remains the same. Abruptly switching forage can cause colic and other gastrointestinal issues in horses.

Ending1: Avoid feeding your horse anything other than your regular diet for about six days after traveling. Increase the 20% to 20% slightly after two days, since your horse is overfed and should be fed at a loss. Ending2: [substeps] A horse's digestive system is a breeding ground for acidophilus, a bacteria that leaks from the gut. If your horse has high forage levels, or if they drink a lot of water, this could trigger diarrhea. Ending3: Maintaining dietary consistency is key to your horse's health and performance during show season. [title] Maintain your horse's normal feeding schedule. Ending4: [title] Make sure your horse is comfortably eating up to four weeks before your show. [step] This will give your horse time to get used to the change in environment and stretch its digestive system.

Answer format: ending1/ending2/ending3/ending4