Feeding potato skins to horses is a BIG no. Though it may seem harmless (or even efficient in terms of waste reduction), you should never allow your horse to eat potato skins. Even more so than the potato flesh itself, the peels present an even greater concentration of toxic solanine.
The potato plant (Solanum tuberosum) is potentially poisonous to horses because it belongs to the perennial nightshade family, one of the most toxic types of wild plants to grow in pastures across the United States.
Almost any fruits, and many vegetables, are safe treats for healthy horses. Apples and carrots are traditional favorites. You can safely offer your horse raisins, grapes, bananas, strawberries, cantaloupe or other melons, celery, pumpkin, and snow peas.
Sweet, crunchy carrots are the perfect treat for most horses. They're rich in vitamins and minerals and they're made up of 90% water. Given in moderation, they can be a great tool for fostering a bond with your horse, and even for use as a reward during training.
Parsnips are low in sugar, which makes them an ideal treat for horses. If you horse isn't fond of carrots, you might give parsnips a try as many picky horses do like them. As with carrots, be sure to clean them to ensure that they are free of any dirt or debris before you feed them to your horse.
Laminitis can be linked to insulin production and the high sugar content of certain feeds. Lush grass and sweet treats such as fruits and carrots are high in sugar and can trigger laminitis.
Horses can eat banana peels, but not all of them will be interested in eating them, owing to their bitter taste. The peels are just as healthy for your horse as the banana itself, also containing potassium and vitamin B.
Bananas are a healthy source of potassium for horses and are a fruit they really enjoy eating. Bananas are a very popular food for riders to give their race horses as they give that extra boost of energy. You can feed bananas to horses with the skin still on as the whole fruit is beneficial for their health.
What started out as food for race horses has become the occasional treat for everyday horses. No, eggs aren't really bad for them. Equine experts tend to agree that mixing in eggs with feed isn't a big issue, as long as the horse doesn't mind.
While a lot of time is spent focussed on horses that can't eat grain in their diet, cereal grains such as oats, barley, triticale, corn, rice, rye, sorghum and wheat form a valuable component of many horse's rations.
Potatoes
As members of the nightshade family, potatoes are toxic to horses. Raw potatoes are more dangerous than cooked potatoes, but potato poisoning is possible will all types of this starchy vegetable.
There is no harm in occasionally feeding bread, but it is not the most nutritious feedstuff when used as the sole concentrate. While bread is chock full of calories, it provides few nutrients. When only bread is fed with hay, the major nutritional problem is an imbalance and/or deficiency of some minerals and vitamins.
Sweet potatoes can be a tasty treat for horses either raw or cooked. Due to their relatively high starch and sugar content, they should be fed in only small amounts. Feeding large amounts carries some risk, especially when given to starch-sensitive horses.
How many apples can a horse eat a day? Horses should only have about one, maybe two, apples per day. Remember everything in moderation. Feeding an excess of two apples can cause stomach upset, or even colic.
Under no circumstances should tomatoes be fed to horses, she says. They contain multiple toxins in the fruit and plant that are poisonous to horses and many other animals. Tomatoes come from the Solanaceae family, which also includes deadly nightshade and many other toxic plants.
For the most part, apples are healthy for horses to eat and most horses absolutely love them. Apples contain potassium, fiber, vitamin A and vitamin C. They also contain antioxidants that help destroy damaged molecules in the body that often cause inflammation and other issues.
Grass – horses love grass. It's their natural food and great for their digestive system (although beware of your horse eating too much lush grass in spring as this can cause laminitis).
Many pleasure and trail horses don't need grain: good-quality hay or pasture is sufficient. If hay isn't enough, grain can be added, but the bulk of a horse's calories should always come from roughage. Horses are meant to eat roughage, and their digestive system is designed to use the nutrition in grassy stalks.
Some of their favorites include watermelon, apples, strawberries, bananas, and peppermints. But horses have to eat a certain amount of forage because of their complex digestive system, and most like alfalfa hay the best. Horses like to eat fruits and vegetables, and most of these are safe to feed your animal.
Cauliflower, Cabbage, and Broccoli: Vegetables in the brassica family, such as cauliflowers, broccoli, brussels sprouts etc., can lead to detrimental gas and colic problems for horses; therefore those should be avoided entirely.
Apples make an excellent treat for a lot of horses, and many owners enjoy feeding them. It's a good idea to chop them up, because an overly ambitious horse might try to swallow an apple whole.
Watermelon is not harmful to horses. In fact, it is a great treat. In some European countries, watermelon rind is a common horse treat, though it should be cut into small, easy-to-chew pieces. If large pieces of rind are given, horses may choke.