Rabbits, like horses, are classified as hindgut fermenters, meaning their digestive system ferments plant material in their hindgut.
This hindgut fermentation mainly occurs in a specialized organ called the cecum.
Unlike ruminants (like cows), the cecum in rabbits is located at the end of their digestive tract.
Microbial fermentation within the cecum breaks down complex carbohydrates into simpler molecules the rabbit can absorb and utilize for energy.
To optimize this fermentation process, a rabbit's diet should be rich in high-quality fiber.
This fiber acts as the rabbit's primary energy source and supports a healthy gut microbiome.
After chewing and swallowing food, it travels through the upper digestive tract before reaching the colon and cecum.
The colon separates the digestible and indigestible parts of the ingested food. The digestible portion is sent to the cecum for further breakdown through a process lasting at least four (4) hours.
The resulting product of cecal fermentation is coated in mucus and called cecotropes.
Rabbits practice a behavior called coprophagy where they re-ingest these cecotropes to gain essential nutrients produced by bacterial breakdown.
Rabbits are herbivores, meaning their primary diet consists of plant material.
Rabbits are categorized as concentrate selectors due to their preference for high-fiber vegetation.