ANSC 1011 : Gastrointestinal Tract And Nutrition Notes
Document Summary
Methods of digestions: physical or mechanical, chewing (mastication, muscular action (peristalsis, chemical action, hydrochloric acid, bile, enzymes, catalysts (speed up the reaction) Classification of digestive systems: anatomically, non-ruminants (simple stomachs, ruminants (complex stomach- 4 compartments, diets, carnivores (flesh eating, cats or birds of prey, omnivores (animal and plants, humans, pigs, chickens, herbivores, horses, cows, rabbits, cellulase produced by bacteria. Duodenum (duodenal loop: bile and pancreatic enzymes are secreted and is a major site of chemical breakdown of food. Jejunum: longest part where some digestion occurs but the main function is absorption of nutrients. Uric acid (birds and other species) c5h4n3o3. Ruminant vs. non-ruminant digestion: non-ruminant, chewing, some amylase added through saliva, pig, stomach, acid breakdown of food particles- hcl, some protein degradation through action of pepsin (enzyme) secreted in gastric juices, small intestine, digestion, pancreatic secretions. Trypsin and peptidase which further degrade protein to amino acids.
