Emerald Green Grass & Carrot Tasty Treats. Carrot a firm favourite with horses and ponies of all shapes and sizes combined with either our Grass or Alfalfa Pellets is a great way to provide some all important Vitamin A for your horse’s diet. Vitamin A is a powerful antioxidant and as such significantly contributes to horse’s health and well-being. Carrots are also a source of important minerals such as potassium copper and manganese.