ANSI 3543 Lecture Notes - Lecture 18: Pylorus, Digestion, Rumen
Document Summary
2 types: saturated single bonds, unsaturated double bonds. Source of energy: oxidation of fat yields co2 + h2o + energy, 2. 25x more than cho, as far as cost, it can be cheap (cheap substitute for cho) Carrier for absorption: fat soluble vitamins from gut, in blood as lipo-protein complexes. Fat soluble vitamins a, d, e, k. Essential fatty acids: linoleic (18c, 2 double bonds, linolenic (18c, 3 double bonds, arachidonic (20c, 4 double bonds) Precursors of a number of unsaturated fatty acids. Is functional in young animals: pancreatic lipase. Activated by ca in lumen of si. Churning of stomach creates small fat droplets. Pyloric sphincter meters fat droplets to small intestine: small intestine. Bile: produced by liver, stored in gall bladder (except horses, secreted into duodenum, major actions. Cleavage of glycerol yields a structure known as a micelle. Micelle: free fatty acids and bile: can interact with brush border and is the form in which lipids are absorbed.
