ANIMSCI 2200.01 Study Guide - Final Guide: Osteoporosis, Extracellular Fluid, Goitre
4 Oct 2018
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Nutrient: chemical element or compound that is required to support cellular needs. 6 classes: water, carbs, lipids, proteins, vitamins, minerals. Most feeds classify as either concentrate or roughage. Concenrtates: cereal grains (corn wheat, barely, oats , oil meals, molasses, dried milk products, often high in energy, low in fiber, highly digestible (80-90%) Roughages: legume hays, grass hays and straws, silage, grazed forages, less digestible than concentrates, digestibility often on the 50-60% range (even lower for straws) Carbohydrates: molecule composed of carbon, hydrogen and oxygen. Primary component of plant tissues: 70% or more of forage dry matter classified as simple or complex simple: monosaccharides (glucose) and disaccharides (sucrose) (sugars) complex: polysaccharides (starch - amylose and fiber - cellulose) Vfa (result of fermentation of carbs) energy sources for ruminants. Cellulose vfa energy or glucose. Carbs not considered essential bc body has ability to produce glucose from many different precursor molecules.
