Nutrients(anprod) Flashcards
chemical element or compound that aids in the support of life.
Nutrient
6 basic classes of nutrients
water, carbohydrates, fats, proteins, minerals, vitamins
it makes up the largest part of most living things.
water
the amount of water in animal bodies range from how many percent?
40-80%
Younger animals have a ______ percent of water in their bodies than older animals.
higher
Factors affecting water requirements/intakes
type of animal
age
environmental temperature/conditions
type of feed & preparation
major functions of waters in the body
- transport of nutrients
- major component in body metabolism
- body temperature regulation
- as buffer in various physiological equilibria
- aids in various physiological processes like swallowing, digestion, excretion, etc.
specific functions of water
lubricates joints
cushion of the CNS(CSF)
transport of sound in the ear
accomodation/focusing of the eyes
the main energy nutrients found in animal rations
Carbohydrates
made up of sugars, starches, cellulose and lignin
carbohydrates
provides energy for the body cells, and also produce the body heat that helps to keep the animal warm.
Carbohydrates
-sugars and starches
-easily digested
-referred to as nitrogen-free extract(NFE)
-come from wheat, oats, barley, rye, and sorghum
simple carbohydrates
-called fiber, are cellulose and lignin
-more difficult to digest than simple carbohydrates
complex carbohydrates
-is found mainly in roughages like hay and pasture plants
-examples are alfalfa, bromegrass, orchard grass, and blue grass
fiber/ complex carbohydrates
can digest large amounts of fiber, a high percentage of their ration is roughage
ruminants
cannot digest large amounts of fiber, their ration must be mostly cereal grains that are more easily digested
simple-stonached animals like equine
functions of carbohydrates in animal nutrition
- as main source of energy
- as components in the formation of body regulators
- as substrate for formation of glycogen and synthesis of body fats (stored energy)
- accessory functions: as source of nutrients for production of animal products
- as bulk factors: source of fibers
common carbohydrates important in animal nutrition
A. monosaccharides
B. disaccharides
C. polysaccharides
are simple sugars and the fundamental unit is glucose
monosaccharides
under monosaccharides pentoses(five carbon atom sugars)
- L-arabinose
- D-xylose
- D-ribose
- D-xylulose and D-ribulose
under monosaccharides (hexoses) six carbon atom sugars
- glucose
- fructose
- galactose
formed from two molecules of monosaccharides
disaccharides
examples of disaccharides
sucrose
maltose
lactose
cellubiose
combination of several units of glucose
polysaccharides
examples of polysaccharides
starch
glycogen
cellulose
hemicellulose
chemically composed of carbon, hydrogen, and oxygen
fats and oils
they contain more carbon and hydrogen atoms than do carbohydrates, for this reason, the energy value of fats is higher than that of carbohydrates
fats and oils
have 2.25 times the energy value of carbohydrates
fats
are solid at body temperature
fats
are liquid at body temperature
oils
in animal nutrition, both fats and oils are commonly referred to as ____
fats
are easily digested by animals. they provide energy and body heat, they also carry the fat-soluble vitamins that are in the feed
fats
addition of fats to animal feeds ________ the energy level in the diet.
increases
fats may also be added to improve the ____, _____, and _____ of the feed
flavor, texture and palatability
added fat reduces any dustiness of the feed. fats are soluble in ____ and other organic solvents
ether
_____is used in feed analysis to extract the fat from the feed. therefore, the dissolved substances(fats) are called ether extract.
ether
functions and importance of lipids
- serve as a condensed reserve of energy & source of essential fatty acids
- structural elements of the tissues
- essential for various reactions in intermediary metabolism
- as carrier of the fat-soluble vitamins
- add palatability and reduce dustiness in feeds
-basic components of most lipids, which combine with glycerol to form fat or triglyceride
Fatty Acid
types of fatty acids
satured fatty acids
unsaturated fatty acids
contains no double bonds
saturated fatty acids
examples of saturated fatty acids
butyric, caproic, caprylic, lauric, myristic, palmitic, and stearic
contains one or more double bonds
unsaturated fatty acids
examples of unsaturated fatty acids
palmitoleic
oleic
linoleic
linolenic
arachidonic
Linoleic, linolenic, and arachidonic acids apparently cannot be synthesized by animals or at least not in sufficient amounts to prevent effects, thus must be supplied in the diet
Essential Fatty Acids(EFA)
-has been recently receiving considerable attention with regards to their importance in human and animal diets
Omega 3 FA
three main omega-3 fatty acids are:
alpha-linolenic acid(ALA)
eicosapentaenoic acid(EPA) and
docosahexaenoic acid(DHA)-sardines
-esters formed by the reactions of a glycerol and 3 molecules of Fats and Oils
triglycerides
consists of glycerol esterified with long chains FA and phosphoric acid, and nitrogen base
phospholipids
phospholipids are essential components of:
a. animal cell membranes
b. lipid transport in the plasma
c. essential for proper digestion and absorption of fats
-large group of compounds in plants and animals
steroids
steroids includes:
a. sterols
b. cholesterol
c. ergosterol
d. 7-dehydeocholesterol
e. bile acids
f. steroid hormones
usually serves as the precursor of most of these steroids
cholesterol
plant derived precursors of vitamin d
ergosterol
animal precursor of vitamin d
7-dehydrocholesterol
derivatives of cholesterol, synthesis in the liver and are major components of bile that aid in emulsification of fats in the small intestine
bile acids
synthesized from cholesterol primarily at the sites of testis
androgen
synthesized from cholesterol primarily at the sites of ovary
estrogen
synthesized from cholesterol primarily at the sites of adrenal cortex
glucocorticoids and mineralocorticoids
-organic compounds made up of amino acids.
-supply material to build body tissues
proteins
-contain carbon, hydrogen, oxygen, and nitrogen. some also contains sulfur, phosphorus, and iron
amino acids
how many amino acids are considered to be essential for swine
ten
how many amino acids are considered to be essential for poultry
fourteen
functions of proteins and amino acids
- basic structural material in all vital organs, muscles, skin, connective tissue, hair, hoof, horn, etc.
- essential for animal’s growth and development & fetal development
- necessary for tissue maintenance and repair
- required for meat, milk, egg, and wool production
types of amino acids
-essential AA
-non-essential AA
known also as dietary essential or indispensable AA
Essential AA
-needed by the animal and cannot be synthesized fast enough to meet the body’s requirement and therefore must be supplied in the feed protein or diets
essential AA
essential amino acids includes:
phenylalanine, valine, tryptophan, methionine, arginine, threonine, histidine, isoleucine, leucine, lysine
known also as dietary non-essential or dispensable AA
non-essential amino acids
needed by the animal but can be formed from other AA by the animal and so does not have to be present in the protein of feeds
non-essential amino acids
non-essential amino acids includes
alanine, aspartic acid, citrulline, crystine, glutamic acid, glycine, hydroxyproline, proline, serine, tyrosine
are considered to be good-quality proteins since they usually contain a good balance of the essential amino acids
animal protein sources
are usually thought of as poor quality proteins because they often lack some of the essential amino acids
plant protein sources
often used in commercial feeds include linseed meal, soybean meal, cottonseed meal, and dehydrated alfalfa meal
plant protein sources
often used are meat meal, fish meal, condensed fish solubles, dried whey, casein, dried milk albumin, and dried skim milk
animal protein sources
when animals do not receive sufficient protein or the amount of essential amino acids is insufficient, there will be severe consequences.
protein deficiency
inorganic materials needed in various amounts by animals, it contains no carbon thus, if a feed were completely burned, the ash that was left would be the mineral content of the feed
minerals