ANSC 3120 Study Guide - Midterm Guide: Dietary Fiber, Weanling, Dry Matter
12 Apr 2016
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Ansc 3120 questions to summarize lecture content from before midterm i. Lecture 1: proximate nutrient groups, moisture and dry matter. Nitrogen-free extract (nfe, includes starch, sugars and soluble fibers) The major types of feed ingredients, additives or supplements that are in a balanced animal diet are: Energy feeds (high in starch/sugar but low in cp, etc. ) Protein feeds or protein supplements (high in cp, high in crude fat) High fiber feeds or roughages (high in dietary fibre contents, low in other groups) Macro-mineral supplements (supplies na, cl, ca, p and sometimes k) Fat or oil supplements (enhances dietary energy density, feed palatability, reduce dustiness) Feed additives, usually below 1% of the diet (trace mineral and vitamin premix, antioxidants, sweeteners, feed enzymes, antibiotics, growth promoters) Dry matter (dm) = total weight (100%) total moisture (h2o) (%) Bound water: water in feeds that exist via hydrogen bonding. Free water content: water in feed sample without forming hydrogen bonds with other hydrophilic compounds.
