ANSI 3543 Lecture Notes - Lecture 1: Fatty Acid Metabolism, Cholesteryl Ester, Blood Lipids
Document Summary
Functions: supply energy for maintenance and productivity. Digestibility of fats can influence their utilizable energy. High proportion of dietary waxes and sterols(plant product: source of essential fa. Linoleic(omega 6) acid(c18:2) and linolenic(omega 3) acid(c18:3)are efa. Transportation in and out of the cell. Skin structure as deficiency of efa causes: Scaly skin and necrosis of the tail. Efa are precursors of eicosanoids(molecules in immune function) Linoleic acid to arachidonic acid to prostaglandins: prostaglandins involved in- Inhibit norepinephrine-induced release of fa from fat tissue. Conjugated linoleic acid (cla) isomers(produced in rumen): Protective against cancer, diabetes, atherogenesis(thickness of arteries due to accumualtio of white blood cells), and obesity. Modulation of immune function and bone growth. Biological activity of different isoforms of cla: Trans-10,cis-12 inhibits milk fat synthesis in dairy cows and back fat depth in pigs: carrier of fat-soluble vitamins a,d,e,k. Digestion and absorption of fats influence the absorption of the fat-soluble vitamins (a, d, e, and k).
