ANFS251 Lecture Notes - Lecture 3: Cecum, Duodenum, Chyme

• School: University of Delaware
• Department: Animal and Food Sciences
• Course: ANFS251
• Professor: Griffiths Lesa

Document Summary

Don"t bite off more than you can chew! (unless you"re a ruminant) Cattle and sheep will masticate (chew) food only to a limited extent before ingesting. Subsequently regurgitate coarser constituents and re- masticate them. Incisor teeth adapted to nipping off plant materials. No upper incisors, depend on upper dental pad and lower incisors. Swine, use incisor teeth primarily to bite off pieces of food. Teeth adapted to tearing off muscle and bone. Pointed molars are adapted for crushing bones and mastication of food. Bolus is coated with saliva to lubricate it, making it easier to swallow. Process of moving the bolus from the reticulorumen back to the mouth. Aids the digestion of fibrous feed components by reducing particle size. Lined with specialized secretory tissues and contractions of the muscles lining the stomach mix with the bolus gastric (stomach) secretions (but some not as muscular as others) Body chief cells - secrete pepsinogen, rennin, lipase.