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ANS 311

Principles of Animal Nutrition

TermDefinition
Dry Matter All nutrients except for water; DM = (dried weight/fresh weight) * 1000
Ether Extract EE - measures fat content
Crude Protein CP - measures total protein using Kjeldahl; CP = (N)(6.25)
Ash Measures all inorganic mineral content
Crude Fiber CF - measures total fiber
Nitrogen-Free Extract NFE - calculated value of carbs; NFE = DM - all other nutrients
Neutral Detergent Fiber NDF - hemicellulose, cellulose, lignin
Acid Detergent Fiber ADF - cellulose & lignin
Gross Energy Total energy; bomb calorimeter
High-Performance Liquid Chromatography HPLC - identifies amino acids
Atomic Absorption Spetrophotometry Identifies minerals from ash process
Near-Infrared Reflectance Spectrophotometry NIRS - feed and forage analysis
Gas-Liquid Chromatography GLC/GC - identifies volatiles
Digestibility (Nutrient in - nutrient out)/(Nutrient in)
Rumen Largest component; fermentation chamber; lined with papillae
Reticulum Regurgitation initiator; honeycomb
Omasum Food filter; folds; acts as sieve; water absorption
Abomasum Glandular stomach; chemical digestion (HCl)
4 steps of rumination 1. Regurgitation, 2. Remastication, 3. Resalivation, 4. Redeglutition (swallowing bolus & liquids)
Crop Storage and fermentation
Proventriculus Glandular stomach; thick mucosa, low pH
Gizzard Grinds up food; "hen's teeth"
Liver Central organ, largest gland; most metabolically active; production of bile
Pancreas Produces digestive enzymes and hormones
Created by: 100000033006215