A 3-pound coffee can of oats is not the same amount of feed as a 3-pound coffee can of corn! The can may hold 23 pounds of oats and 45 pounds of corn. Further, since corn is more calorie-rich than oats, the can of corn may contain 23 times the energy as the can of oats. Any time you change feed, weigh the can of feed to make sure your horse gets fed the same amount of feed every meal. And remember that every different batch of corn or oats may be a different weight, whereas a specific volume of Strategy® Professional Formula GX horse feed or Omolene #200® horse feed will weigh the same each time. Another option is to use a pre-measured Purina scoop, available at Reber Ranch.