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Exam One Terms
Terms For Animal Nutrition Course Exam 1; UMN
65
Nutrition
Undergraduate 3
09/18/2013

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Term
Ingestion
Definition
Consumption of food or act of taking food into the body
Term
Digestion
Definition
Process in which material is subjected to chemicals or enzymes with a resultant change or decomposition of the physical or chemical nature of that substance. Breakdown of feed particles into suitable products for absorption.
Term
Absorption
Definition
The passage of nutrients or other materials into the blood, lymph and cells from the alimentary tract
Term
Excertion
Definition
Removal of waste products from the body, primarily in the form of feces and urine
Term
Nutrient
Definition
Any chemical element or compound in the diet that supports normal reproduction, growth, lactation, or maintenance of life processes
Term
Ration
Definition
An amount of feed consumed by an animal in 24 hours (daily food supply)
Term
Diet
Definition
Feed ingredient or mixture of ingredients including water, which is consumed by animals
Term
Balanced Diet
Definition
A diet that supplies all of the required nutrients in the correct amounts and proportions to properly nourish the target animal for a specific purpose of production
Term
Food
Definition
Any nutritious substance that people or animals eat or drink, or that plants absorb, in order to maintain life and growth.
Term
Feed
Definition
Refers to food but is more commonly applied to animal food than to human food
Term
Foodstuff or Feedstuff
Definition
Any material made into or used as food or feed, respectively
Term
Proximate Analysis
Dry Matter
Definition
Heat food sample above boiling; removes water by evaporation
Term
Proximate Analysis
Ash (minerals)
Definition
Burn samples in muffle furnace; dry inorganic residue left
Term
Proximate Analysis Crude Protein
Definition
Kieldahl Process; sample digested in sulfuric acid; neutralized with sodium hydroxide, distill, titrated; N is left. Multiply by 6.25
Term
Proximate Analysis
Ether Extract
Definition
extract sample with ether 4 hours. Loss in weight after drying equals fat
Term
Proximate Analysis Carbohydrates
Definition
Crude fiber + Nitrogen Free Extract
Term
Proximate Analysis
Crude Fiber (CF)
Definition
boiling an ether extracted sample in dilute acid, then in weak alkali, burned in muffle furnace
Term
Proximate Analysis
Nitrogen-Free Extract
Definition
% of H20, ash, protein, fiber, and fat added together and subtracted from 100
Term
Prehension
Definition
Taking in of feed or water into the mouth
Term
Mastication
Definition
Reduction of feed particle size; generally by chewing
Term
Delutition
Definition
Act of swallowing
Term
Regurgitation
Definition
Casting up of undigested material
Term
Anabolism
Definition
Growth or building process (synthesis)
Term
Catabolism
Definition
Breakdown or destructive reactions (degradation)
Term
Metabolism
Definition
Combination of anabolic and catabolic reactions occurring in the body with the liberation of energy. All the chemical processes of the body involved in the maintenance of life.
Term
Mouth
Definition
proximal organ of the gastrointestinal tract that contains three accessory organs:Tongue, Teeth, Salivary glands
Term
Esophagus
Definition
a hollow muscular tube that transports ingesta from the mouth to the stomach.
Term
Stomach
Definition
a hollow, pear-shaped muscular digestive organ
Term
Small Intestine
Definition
a long, narrow tube that is the most active digestion and nutrient absorption site.
Term
Large Intestine
Definition
larger diameter and volume, but shorter compared with the small intestine. Nearly all amino acids, fatty acids and monosaccharides are absorbed prior to this point, fiber remains
Term
Stomach Compartment Reticulum
Definition
its walls are lined with mucus membrane containing many intersecting ridges that subdivides the surface into honeycomb like compartments
Term
Stomach Compartment Rumen
Definition
is a large muscular compartment that almost entirely fills the left side of the abdominal cavity. The walls contain projections called papillae. Walls secretes no enzymes.
Term
Stomach Compartment
Omasum
Definition
is a spherical organ filled with muscular laminae (leaf-like structure). Walls secrete no enzymes.
Term
Stomach Compartment
Abomasum
Definition
(“true” or glandular stomach) – is the first glandular portion of the ruminant gastrointestinal tract. Walls secrete enzymes.
Term
Stomach Cardiac Sphincter
Definition
located at the junction of the esophagus and stomach that controls passage of ingesta into the stomach or out
Term
Stomach Esophageal Region
Definition
nonglandular area surrounding the cardia
Term
Stomach Cardiac Gland Region
Definition
contains cells that produce primarily mucus; protect the stomach lining
Term
Stomach Fundic Gland Region
Definition

contains cells that provide the gastric secretions needed for the initial stages of digestion

  - parietal cells- produce HCl
  - chief cells- produce enzymes or precursors of enzymes

Term
Stomach Pyloric Gland Region
Definition
contains cells that produce mucus and some proteolytic enzymes
Term
Stomach Pylorus
Definition
beginning of small intestine
Term
Stomach Pyloric Sphincter
Definition
located at pylorus which controls passage of chyme out of the stomach
Term
Duodenum
Definition
First section of small intestine. site of active enzyme secretions from duodenum lining and pancreas. Bile enters from the gall bladder/liver.
Term
Jejunum
Definition
Middle section of small intestine. active in nutrient absorption
Term
Ileum
Definition
Last section of small intestine. active in nutrient absorption. pH of small intestinal contents ~6 to 7.
Term
Large Intestine Cecum
Definition
First section of large intestine; little functional signifcance in pig
Term
Large Intestine Colon
Definition
Middle section; largest part of large intestine
Term
Large Intestine Rectum
Definition
Last section of large intestine
Term
Eructation
Definition
belching of gas
Term
Esophageal or Reticular Groove
Definition
passageway that extends from the cardia to the omasum; can close to direct ingesta or open and permit ingesta to enter rumen/reticulum area
Term
Salivary Amylase
Definition
Starch to maltose
Term
Stomach Pepsin
Definition
protein to polypeptides
Term
Stomach Rennin
Definition
promotes milk curdling or protein denaturation
Term
Stomach Lipase
Definition
fat splitting
Term
Pacreas Trypsin
Definition
protein to peptides and amino acids
Term
Pancreas Chymotrypsin
Definition
protein to peptides and amino acids
Term
Carboxypeptidase
Definition
protein to peptides and amino acids
Term
Pancreas Amylase
Definition
undigested carbs to sugars
Term
Pancreas Lipase
Definition
fat splitting; fats to fatty acids and glycerol
Term
Pancreas Buffers
Definition
ex. bicarbonates to neutralize stomach acids
Term
Intestine Aminopeptidase
Definition
protein to peptides and amino acids
Term
Intestine Dipeptidase
Definition
peptides to amino acids
Term
Intestine Nucleases
Definition
nucleoproteins to purines and pyrimidines
Term
Intestine Maltase
Definition
maltose to 2 gluctose
Term
Intestine Lactase
Definition
lactose to glucose and galactose
Term
Intestine Sucrase
Definition
sucrose to glucose and fructose
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