Nutrition and Nutrients Flashcards
Amino acids that are most commonly deficient in feed
Lysine
Methionine
Tryptophan
What are some variables that can alter nutritional composition
Time of year
Availability of water
Time of harvest
Plant variety
Processing
Conservation
Haylage
Semi-wilted, fermented grases/legumes in bags
Feedstuff
Component of a diet (ration) that serves some useful function
Component of proximate analysis determined by drying a sample in an oven until constant weight
Dry Matter
Types of nutrients
Carbohydrate
Protein
Lipid
Minerals
Vitamins
+/- Water
+/- Energy
Proximate analysis component determined by boiling a knowns amount of ground feed sample in a weak acid solution followed by filtration and repeating the process with weak base solution before drying
Crude Fiber
Essential Fatty Acid
Animal requires but not able to synthesize
______________
Linoleic and Linolenic
Number one US grain
US major exporter and producer
Highly palatable
High energy, low fiber
Fed whole, ground or flaked
Corn
Vitamins are easily destroyed by
Heat
Sunlight
Oxidation
Long Storage
Forages/pastures are most nutritious if harvested and/or eaten as (young/old) plant
Young
Suited to cold and wet weather
Low fiber and less energy than other grains
Fed whole or rolled
Very safe but not as nutritious as other grains
Oats
Functions of minerals
Enzyme activity
Oxygen transport
Component of vitamins
Osmotic pressure
Nervous system
Found in the highest concentration - after water - in all living organisms
Proteins
Cold tolerant
Has a hard kernal
Rolled, ground or flaked
Drought tolerant
Must not be fed green
Barley
Drought resistant
Composition similar to corn
Fed ground or rolled
Less energy content than corn
Sorghum
Effect of goitorgenic compounds of canola
Disrupts thyroid metabolism
Maltose
Glucose + Glucose
1 cal = _____ J
4.184 J
Forage
Total plant material to be consumed by the animal
Tropical grass found on lawns, pastures, hays
Dense root mass
Spreads through rhizomes
Very fibrous when over mature
Bermuda Grass
Mainly used for human use
Must be rolled or pressed to break the hard kernel
Become pasty in GI tract
High energy, high crude protein, low fiber
Wheat
Hay
Forage baled at low water content
Cool season grasses
Timothy
Sweet-Clover
(Low/High) NDF values are desired
Low
Vitamin D deficiency causes
Rickets
Nodules in root system
Transform atmospheric N into usable form
High CP
Legumes
Common mineral deficiencies of pigs
Iron
Selenium
Vitamin K deficiency causes
Tissue hemorrhage
Common native grasses
Little Bluestem
Big Bluestem
Indian Grass
Switch Grass
(Low/High) ADF concentration feeds are usually more nutritious
Low
Nitrogen Free Extract (NFE) =
NFE = 100 - (CP + CF+ Crude Fat + Ash)
Vitamin E
Germ or germ oil of plants, green plants or hay sources
Sources of water
Drinking water
Free water (feedstuff)
Metabolic water
By product of wet milling of corn starch and syrup
40-60% CP
Low palatability
Corn Gluten Meal
T/F: Water is considered a nutrient when formulating rations.
False
Storage for preserved long fibers
Hay
Haylage
Common mineral deficiency of sheep
Cobalt
Vitamin K
Green plant material source
Types of silages
Ensiled Forages
Proteinaceous
Carbonaceous
Component of proximate analysis determined by sample digested in hot, concentrated sulphuric acid to convert all carbon to carbon dioxide and nitrogen is trapped
Crude Protein
Amino Acids
Building blocks of proteins
Feedstuffs can be classified according to 8 different categories
Roughages
Pasture, Range Plants, Plants fed green
Silages and Haylages
Energy Feeds
Protein Supplements
Mineral Supplements
Vitamin Supplements
Non-Nutritive Additives
Neutral Detergen Fiber (NDF)
Structural components of the plant - specifically cell wall
Predictor of voluntary intake
Pentoses
Arabinose
Ribose
Xylose
High Energy Feed Stuffs
Cereal
Grain By-Products
Molasses
Sugar Beet Pulp
Citrus Pulp
Production of oil and linen cloth
Meal results from oil extraction
CP low, CF high
Poor amino acid content
May contain cyanogen
Linseed (Flax)
Disaccharide examples
Lactose
Maltose
Sucrose
Feed Additives
Ingredient or combination of ingredients added to basic feed mix to fulfill a specific need
Two major storage forms for forages
Hay
Silage
Lipoproteins
Lipids that contain proteins
Macrominerals
Major minerals found in concentrations above 100ppm
Main role of lipids
Act as concentrated form of stored energy
Pastures are important feed for what species
Dairy cows
Digestible Energy (DE) =
DE = Gross Energy (Feed) - Gross Energy (Feces)
To determine mineral content what analysis must be done
Atomic Absorption
Spectrophotometry
Polysaccharide examples
Cellulose
Glycogen
Starch
Gums
Hemicelluose
One of the most popular roughages for dairy cattle
Highly palatable silage
Easily stored and handled
Requires less labor to harvest and feed
50% grain
Corn Silage
Common mineral deficiency in goats and chickens
Zinc
Legume
Production of oil and grain
Beans must be heat treated
Oil pressing
Most important protein supplement
Soybean
Very common and quality grass hay
Grows in cool weather
Very productive
CP 14-17%
Orchard Grass
Components evaluated in proximate analysis
Dry Matter
Crude Protein
Ether Extract
Crude Fiber
Ash
Nitrogen Free Extract
Grains produced by plants of the grass family
Competition with human nutrition
Immesne tonages of harvested grains
Cereal Grains
Classification of Feedstuff
________________________________
Plant transforms solar energy into nutrient souces via photosynthesis
Primarily provide dietary carbohydrates
Require action of microbial digestion in GI tract
Roughages and Forages
T/F: Monogastrics perform well on roughages and foragages
False
________________________
Ruminants, Horses and Rabbit perform well
Unsaturated Fatty Acid
Not all bonds of the carbon are taken by H
Bloat in cattle can be due to ingestion of this feedstuff
Alfalfa
Example of carbonaceous silages
Corn Silage
Grass Silage