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
Four categories of herbage
Grasses
Legumes
Forbs
Browse
Near Infrared Spectroscopy (NIRS)
Analytical method slowly replacing proximate analysis
Useful for cereals and pelleted rations
T/F: Kjeldahl Method gives accurate result for feed grade urea
False
Proximate analysis component determined by burning feed at 300C to 600C
Ash
Functions of proteins
Protecting the body
Food digestion
Stimulating growth
Immune reaction
Energy
Capacity to do work
Tropical crop
Meal obtained after oil extraction
Low on lysine
Low digestibility
Peanuts
1 cal = ______ kcal
1 kcal
Kjeldahl Method
Estimates crude protein content by measuring nitrogen content irrespective of source
Special concerns with pastures
Poisonous plants
Bloat
Nitrate Poisoning
Most grasses consumed are of the (C3/C4) type.
C3
______________________
Higher protein than C4
Common grass of lawns and pastures
Drought tolerant
Tolerant to cold and warm weathers
CP 12%, ADF 30-40%
Fescue
Blister Beetle Toxicity
Horses
Cantharidin toxin of blister beetles found in alfalfa
GI irritant, oral ulcers, colic, death
Hexoses
Fructose
Glucose
Galactose
Mannose
Cold adapted grass
Does not withstand drought
Important hay grass
Favorite of horses, cubed for rabbits and horses
CP relatively high
Timothy
Nitrogen Free Extract is an estimation of
Readily available carbohydrates
Lipid
Organic compound insoluble in water but soluble in organic solvent
Vitamin
Organic substances required by the organisms in very small amounts
Temperate climate legume
Cold adapted
May cause problems related to photosentization in horses by unclear mechanism
Alsike Clover
Common legume in pastures and lawns
“Dutch Clover”
High CP levels - 17-33%
White Clover
Common clinical signs of vitamin deficiency
Anorexia
Reduced growth
Dermatitis
Muscular incoordination
Weakness
Vitamin B Complex
Animal and fish by products, dairy products
Water losses occur through
Urine
Feces
Lungs
Skin
Milk
Roughage
Dietary component high in fiber
Disaccharide
Consists of 2 sugar molecules
Silages
Moisture higher than haylage and hay
Water loss increases with
High protein
High mineral salts
High fiber
High intakes
Last resort plant material
Few animals able to digest
Browse
Inorganic materials are determined by ______ content
Ash
What happens when energy deficiency occurs?
Animals will mobilize body reserves (fat)
Vitamin A
Only found in animal tissues or synthesized
Legume excellent source of protein, calcium, carotene, tocopherol and water soluble vitamins
Highly palatable
Deep rooted - drought tolerant
Alfalfa
Metabolizable Energy (ME) =
ME = Digestible Energy - Gross Energy (Urine + Gas)
Classifications of vitamins
Water Soluble
Fat Soluble
Vitamin A deficiency causes
blindness
Popular feed ingredients for ruminants
Whole cob including grain ground
More crude fiber than grain
Corn and Cob Meal
Relatively winter hardy/ low temperature tolerant grass
Very common
CP 12%, ADF 22-26%, NDF 50%
Brome Grass
Legume commonly found in pasture
Characteristic red flower
Contamination with fungus Rhizoctonia leguminocola
Red Clover
Minerals
Inorganic components of the diet - solid, crystallline elements that cannot be decomposed or synthesized by chemical reactions
Storage for short fibers
Silages
Microminerals (Trace Minerals)
Minerals found in concentrations less than 100 ppm
Energy Deficiency
Wild and domestic animals go through alternating periods of energy surplus, adequacy and deficiency
Examples of proteinaceous silages
Alfalfa silage
Clover silage
Component of proximate analysis determined by extracting of a feed with ethyl ether or combination of organic solvents
Ether Extract (Crude Fat)
In order to get qualitative information about crude fat what test must be performed
Gas Chromatography Mass Spectrometry
Fat
Fatty acids of varied lengths comined with a glycerol molecule
Grass commonly contaminated with Neotyphoidum coenophialum that produces ergot type alkaloids
Fescue
Lactose
Glucose + Galactose
Non grain part of crops
Low in energy, protein, minerals, vitamins
Little nutritional value
Add fiber to diets
Cheap alternative for feeding dry cows and older heifers
Straw
Gross energy is measured with
Calorimetric Bomb
Nutrition
Series of processes by which an animal takes in the assimilates feed components for promoting growth, milk, or fiber production and replacing worn or injured tissues
Determines protein function and properties
Amino Acid Sequence
Common signs of deficiency of essential fatty acids
Scaly skin, necrosis of tail, poor feathering
What happens if the amino acid required to synthesize a protein is not available?
Protein will not be synthesized
Dry Matter % =
DM% = (Dry Weight / Fresh Weight) x 100
Distillery and brewery products are high in what amino acids
Tryptophan
Lysine
Commonly found minerals in water
Chloride, Sodium, Calcium, Magnesium, Sulphates and Bicarbonates
Perennial Grass
High quality during cool season
12-16% protein
Ryegrass
Explain how silage becomes preserved
Plants continue to respire - consume oxygen and produce carbon dioxide
Temperature increases
Fermentation of sugars to organic acid (lactic acid) lowers pH
Saturated Fatty Acid
All bonds in the the carbon are taken by hydrogen
Nutrient that is required in the highest amount in animal diet
Energy
Herbage
Plant material not including seeds or roots - primarily used for wildlife
Polysaccharide
Multiple sugar molecules
Cool climate
Good CP in meal
Less lysine than soybean, more methionine
Toxic goitrogenic compounds
Canola
Browse
Woody plants, consumed by selective grazers/browsers
Legume commonly found in pastures
High in coumarin which is converted to dicoumarol (anti-vitamin K)
May cause bleeding problems - carcass damage from bruising
Sweet Clover
Effects of Gossypol
Toxic to heart, lung and reproductive system
Safer in ruminants
Calorie (cal)
Amount of energy needed to raise the temperature of one gram of water by one degree celsius
Most important source of energy
Carbohydrates
Monosaccharide
One sugar molecule
Examples of types of feed additives
Antibiotics
Arsenicals
Coccidiostats
Nitrofurans
Enzymes
Pigmenters
Proximate Analysis of Ether Extract provides (qualitative/quantitative) information
Quantitative
Percent of body weight that is considered water
75%
Warm season grasses
Bermudagrass
Switchgrass
Fats and oils are a dietary source of
Essential Fatty Acids
Species that is very good at using forbs
Goats
____________________
Lesser extent sheep and cattle
Ingestion of contaminated fescue can cause what clinical signs in Mares?
Prolonged gestation
Weak foals
Abortion
Agalactia
Method of feed evaluation replacing Crude Fiber
Detergent Method
Summer Syndrome
Cattle
Increased body temperature, rapid breathing, decreased production
Due to ingestion of contaminated fescue
By product of the sugar industry
High energy, low protein
Increase the palatability of rations
Molasses
Sucrose
Glucose + Fructose
What in the nodules of legumes are able to transform atomospheric N into a form usable by the plant
Rhizobia
Most common analysis for feed samples
Proximate Analysis
Function of water soluble vitamins
Cofactors of enzymes
Water plays an essential role in
Digestion
Nutrient Transport
Waste Excretion
Temperature Regulation
Herbage that is able to convert atmospheric N into crude protein
Legumes
Most common mineral supplement added to diets
Salt (NaCl)
Produced for oil and seeds
Meal high in protein but deficient in lysine
High fiber content
Sunflower
Hay
Preserved by drying
Ideal is produce hay around midspring
20% or less moisture
Slaframine Toxicosis
“Salivary Syndrome”
d/t ingestion of Slaframine mycotoxin
Bloat, diarrhea, frequent urination
Oilseed meals commonly used in anima rations
Soybean
Peanut
Sunflower
Cottonseed
Flax
Average protein content in feedstuffs
16%
Function of fat soluble vitamins
Vision
Calcium absorption
Anti-oxidants
Outer covering of the grain seed
Removed when flour is made
More fiber and less energy than whole grain
Bran
____________________
Grain By Product
Vitamin D
Sun cured forages, fish, liver oil and synthetic sources
Economic source for boosting protein levels in ruminant rations
46% Nitrogen
Bitter taste
Can be toxic in high quantities
Feed Grade Urea
Forbs
Broadleaf, non-woody plants
Fescue Foot
Gangrene
Cattle
Occurs in the winter
Due to ingestion of contaminated fescue
Acid Detergent Fiber (ADF)
Least digestible plant components, including cellulose and lignin
Most vitamins are stored in the
Liver
Grown for fiber
Contains Gossypol
Cotton
Protein supplements that may cause strange flavors to products and can be hazarous to health if not used properly
Animal By Products