Holtenius K, Björnhag G
Comp Biochem Physiol A Comp Physiol. 1985;82(3):537-42. doi: 10.1016/0300-9629(85)90429-3.
In guinea-pig, the concentration of nitrogen and viable bacteria were nearly twice as high in the contents of the colonic furrow compared to the contents of the corresponding lumen. Labelled bacteria infused into the proximal colon of guinea-pigs were transported in the furrow into the caecum. Both species produced two types of pellets, one nitrogen-rich intended for caecotrophy, and one nitrogen-poor delivered as faecal pellets. The furrow is part of a separation mechanism in both species saving bacteria for the animals.
在豚鼠中，结肠沟内容物中的氮浓度和活菌数量几乎是相应肠腔内容物的两倍。注入豚鼠近端结肠的标记细菌通过结肠沟被运输到盲肠。这两个物种都产生两种类型的粪便颗粒，一种富含氮用于盲肠营养，另一种含氮量低作为粪便颗粒排出。结肠沟是这两个物种中分离机制的一部分，为动物保留细菌。
