Cecotrope


Cecotropes, also caecal pellets, or night feces, are the product of the cecum, a part of the digestive system in mammals of the order lagomorpha, which includes two families: Leporidae, and Ochotonidae. Cecotropes are passed through the intestines and subsequently reingested for added nutrients in a process known as "cecotrophy", "cecophagy", "pseudorumination", "refection", coprophagia or "coprophagy". Reingestion is also practiced by a few species of rodent, some marsupials and possibly the coppery ringtail possum ) and one species of primate.

Production

The process by which cecotropes are produced is called "hindgut fermentation". Food passes through the esophagus, stomach, small intestine, where nutrients are initially absorbed ineffectively, and then into the colon. Through reverse peristalsis, the food is forced back into the cecum where it is broken down into simple sugars by bacterial fermentation. The cecotrope then passes through the colon, the anus, and is eliminated by the animal and then reingested. The process occurs 4 to 8 hours after eating. This type of reingestion to obtain more nutrients is similar to the chewing of cud in cattle.
The process of cecotrophy can have irregularities. This leads to the lack of assimilation of nutrients, which are synthesized by microorganisms in cecotrophs.