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463g dried separated grass

Approximately 463g of grass provides 500mg calcium. In the digestive tract of a rabbit the water would be extracted from the grass and it would be separated into large and small particle in the colon. In this photos, 463g of grass has been dried and separated into large and small particles to show the volume, which approximates the amount of food that can pass through a rabbit's digestive tract. The large particles would be expelled as hard faecal pellets and the small particles would fill the caecum so it is reasonable to think that 463g might be close to the amount of grass that a rabbit would eat in a day.