Test 1 Flashcards
Nutrition
Study of the processes where feed nutrients are presented to and utilized by living cells for productive processes
Nutrition affects
Reproduction Health Genetic potential Physical ability Emotional state Production
Feed accounts for how much production cost
45-76%
Basic nutrionists
Study metabolism, cellular and sub cellular biochemistry
Applied nutritionist
Cost effective animal feeding, real world problems
Antoine Lavoisier
1743-1794, French man, founder of science of nutrition, head of weights and measures, combustion
Nutrient
Any chemical, element or compound in the diet that supports normal reproduction, growth, lactation, or maintenance of life processes
Essential nutrient
Can’t be made by the body, can’t be synthesized in great enough quantities to support life processes
Nonessential nutrient
Can be made by the body
Essential nutrient classification
Water, carbs, fats, proteins, vitamins, minerals
Monosaccharides
Glucose, fructose, galactose
Disaccharides
Lactose, sucrose, maltose
Polysaccharides
Starch- amylose, amylopectin
Cellulose, hemicellulose, lignin
Monogastrics need
Glucose
Ruminants need
volatile fatty acids
Ruminants can digest
Cellulose
Monogastrics need
Starch
Fats consist of what specific essential fatty acids
Linoleic, linolenic, arachidonic
10 amino acids
Phenylaline
Valine
Threonine
Tryptophan
Isoleucine
Methionine
Histidine
Arginine
Leucine
Lysine
Macro minerals- %in diet
Calcium, phosphorus, sodium, potassium, chloride, magnesium, sulfur
Micro minerals- ppm or ppb
Copper, iodine, cobalt, zinc, manganese, molybdenum, iron, selenium
Vitamin classes
Fat soluble- absorbed with fat
Water soluble- not stored
Fat soluble vitamins
A-vision
D-bone
E-antioxidant
K- blood clotting
Water soluble vitamins
Biotin, choline, folic acid, niacin, pantothenic acid, riboflavin, thiamin, vitamin B6, vitamin B12, vitamin C
Energy
Carbs, fats, protein
Water
Most common substance found on earth
How many gallons of water does it take to produce 1 Lb of body weight
1368 gallons
Properties of water
Liquid at variety of temps Boils at 100 degrees C Freezes 0 degrees C High specific heat High surface tension High latent heat of vaporization Polar solvent
Functions of water
Transport medium Temperature regulator Lubricant Cell turgidity and shape Hydrolysis
Water requirement is influence by
Environment, diet, age and stage of production
Waters role in body heat regulation
Body heat production- cell is exothermic, activity, metabolism, digestion
Dissipation of heat- high specific heat and heat of vaporization
Conditions desirable for evaporative heat loss
Low humidity, air movement, plenty of drinking water
Water management to cool animals
Mist, tank, pond all periodic
Sources of water
Free liquid, water in feed, metabolic water
Metabolic water production
Fat produces most metabolic water
Animal dehydration
Acute due to no water intake
Chronic which causes scours, UTI problems
Water intoxication
Amino acids are composed of
15% carbon
7% hydrogen
23% oxygen
16% nitrogen
Formula for CP from nitrogen
%N X 6.25 = %CP
Proteins involved in body metabolism
Enzymes, hormones, immune system, transport within body
Enzymes
Lipase, Maltese, trypsin
Hormones
Growth hormone, insulin
Regulate metabolism
Immune system
Antibodies are proteins
IgG, IgA, IgM
Transport within the body
Chylomicron
Albumin
Glucogenic acids
Glycine, alanine, threonine, cystine, methionine
Converted to glucose
Ketogenic amino acids
Lysine, leucine
Converted to acetyl CoA-> ketones
Protein and AA deficiencies
Reduced growth Reduce feed efficiency Anorexia Fatty liver Infertility Reduced birth weight Reduced milk production
Minerals must be…?
Provided in diet
They are inorganic
Needed in small amounts
Needed for production maintenance and reproduction
Requirements for minerals
Age, physiological status, body storage, environment
Minerals of concern in drinking water
Arsenide, cadmium, chromium, fluorine, lead, nitrates, nitrites, salt
Loss of H20 affects
Lungs, urine, sweat
Absorption
Occurs about every tissues
Passive diffusion
Fats/ lipids
Wide variety, all hate water, 2.25 more energy than carbs
Two types of lipids
Unsaturated- double bonds
saturated- single bonds
Monoglyceride
One
Calcium functions
Bone development, muscle contractions, blood clotting, primary mineral in body
Calcium deficiency
Rickets, milk fever
Phosphorus functions
Bone development, ATP, nucleic acid
Phosphorus deficiency
Paralysis, tetany, reduced growth
Magnesium functions
Bone development, energy metabolism, CNS
Magnesium deficiency
Grass tetany, convulsions
Na/K/Cl functions
Electrolyte balance
Na/K/Cl deficiency
Altered electrolyte balance, drink urine, stress, dehydration
Sulfur- ruminants only- functions
Protein synthesis, wool growth
Sulfur deficiency
Poor wool growth, poor microbial protein synthesis
Copper function
Red blood cell formation, collagen formation, antibiotic effect
Copper deficiency
Anemia, toxic to sheep
Iron functions
Hemoglobin synthesis
Iron deficiency
Anemia, baby pigs especially
Se functions
Antioxidant
Se deficiency
White muscle disease
Zinc functions
Bone growth, cofactors with insulin
Zinc deficiency
Parakeratosis
Calcium sources
Limestone, oyster shells
Phosphorus sources
Dicalcium phosphate, oyster shells
Magnesium sources
Magnesium oxide
Na/K/Cl sources
Salt
Sulfur sources
Sodium sulfate
What 3 chemicals do carbohydrates contain
Carbon, hydrogen, oxygen
Ratio of C:H:O in carbs
1:2:1
Carbs are the principle energetic source of
Livestock: starch or cellulose
Carbs occupy how much of the diet
80%