Water & Carbohydrates Flashcards
It is the largest component of animals’ body
Water
Water represents __% in developing embryo, __% in newborn animal and about __% in mature animals
90% in developing embryo
70% in newborn animal
60% in mature animals
The cheapest nutrient
Water
A loss of __ percent in body water results in disturbance of body functions
10%
Death of an animal is likely to occur when more than __ percent of its body water is lost
20%
It functions in the transport of nutrients to the cell and remove waste products
Water
functions as a solvent for wide variety of compounds
Water
Water is important in temperature regulation because of its three basic properties, namely
High specific heat - allows for accumulation of heat created by muscular activity
High thermal conductivity - allows for rapid transfer of heat
High latent heat of vaporization - allows for the loss of heat through vaporization
Sources of water for animals
Drinking water
Moisture content of the feed
Metabolic water
approximate daily water intake of mature swine
1.5 - 2.3 gallons/head/day
approximate daily water intake of mature sheep
1-3 gallons/head/day
approximate daily water intake of mature cattle
10-14 gallons/head/day
approximate daily water intake of mature chicken
2 parts water for each l part dry feed
(2:1 water-dry feed)
approximate daily water intake of mature duck
3-4 parts water for each 1 part dry feed
(3-4:1 water-dry feed)
Water from the animals’ body is lost through:
Urine
Feces
Vaporization from the lungs
Sweat
carbohydrate is derived from what French word
hydrate de carbone
Most important sugar in nutrition
Glucose
Carbohydrates with single glucose unit
Monosaccharides
Monosaccharides with aldehyde group
Aldose
Monosaccharides with ketone groups
Ketose
Carbohydrates with 6 carbon atoms
Hexoses
major end product of carbohydrate digestion in non-ruminants
Glucose
only important ketose in nature
Fructose
sweetest of the carbohydrates
Fructose
__% of sugar in honey is fructose
75%
Component of milk sugar
Galactose
Carbohydrates represent __% of plants’ dry weight
75%
Only __-__% carbohydrates are present in particular animal tissues
1-1.50%
Carbohydrates with 5 carbon atoms
Pentoses
found in every living cell, vit B2 and B6, nucleic acids (RNA and DNA)
Ribose
component of hemicellulose and gum
Xylose, arabinose
Saccharide units are linked together by what?
Glycosidic bond or glycosidic linkage
Carbohydrates with more than 2 glucose units
Polysaccharides
repeating units of maltose or glucose
Starch
Two forms of starch
Amylose
Amylopectin
Animal starch
Glycogen
most abundant polymer in the plant kingdom
Cellulose
resistant to animal digestive enzyme but susceptible to microbial enzyme cellulase
Cellulose
group of complex carbohydrates that are closely associated with cellulose
Hemicellulose
encases the cellulose and hemicellulose providing structural support and mechanical strength to plants
Lignin
Amount of water in feeds:
Low moisture = ___ nutrient
High
In most cases, less than __ percent moisture content is satisfactory for storage of most feedstuffs
14%
Water from the animals’ body is lost through:
Urine
Feces
Vaporization from the lungs
Sweat
Higher consumption of dry matter =
(Water intake)
Higher water intake
Why does high salt content increases drinking?
Salt triggers drinking
Water consumption:
Lactating cow vs dry cow
Lactating cow consumes more
Water consumption:
Lactating cow vs dry cow
Lactating cow consumes more
Main source of energy
Carbohydrates
Two α-D-glucose units joined by a α-1,4-glycosidic bond
Maltose
What units and bond is maltose made up of
two α-D-glucose units joined by α-1,4- glycosidic bond
two β-D-glucose units joined by β-1,4- glycosidic bond
Cellobiose
What units and bond is cellobiose composed of
two β-D-glucose units joined by
β-1,4- glycosidic bond
What is sucrose composed of
D-glucose + D-fructose
What is lactose comprised of
D-glucose + D-galactose
Where Can cellulose be found
Cell wall
Resistant to both animal digestive and microbial enzymes
Lignin
Dietary carbohydrates important in non-ruminants
Amylose
Amylopectin
Lactose
Sucrose
Most absorbable unit
Monosaccharide
What causes poor digestibility of dry matter of feedstuffs in non-ruminants
Non-starch polysaccharides
What makes NSP resistant to the animals’ digestive enzymes
β-1,4
Poultry species have low level of intestinal _____ and as such are not competent in digesting lactose containing feed such as skimmilk
Lactase
Breaks the long glucose chains of starch into shorter chains (mouth)
Amylase
Breaks down starch down to small oligosaccharides and maltose
Pancreatic amylase
Activates pepsinogen into pepsin
HCI
Hydrochloric acid
Enzyme digestive protein
Pepsin
Precursor of fat
Acetate
Diet for beef cattle
Grain diet
Diet for dairy cattle
Hay diet
Why is hay diet suitable for dairy cattle
It has higher acetate
Acetate has high fat
Fat makes milk more flavorful
Why is grain diet much suitable for beef cattle?
It contains high propionate which converts into glucose (in liver)
Glucose is needed for growth
Site of absorption and digestion
Rumen
Transports blood to liver
Portal vein
3 major volatile fatty acids in rumen fermentation
Acetate
Propionate
Butyrate
Formation of glycogen from glucose
Glycogenesis
Reconversion of glycogen into glucose
Glycogenolysis
Major source of water
Drinking water
Moisture content of cereal grains
10 - 30%
Moisture content of root crops
90%
Moisture content of silages
60-70%
allows for accumulation of heat created by muscular activity
High specific heat
allows for rapid transfer of heat
High thermal conductivity
allows for the loss of heat through vaporization
High latent heat of vaporization
All animal species can tolerate water containing ____mg of total dissolved salts.
1000 - 3000 mg
Water containing _____ mg per liter is unsatisfactory for poultry but is tolerated by other animals.
3000 -5000 mg
C, H and O represent __, __ and __% in the carbohydrate molecule,
respectively.
40
7
53
Glycose units of trisaccharide
D-galactose + D-glucose + D-fructose
amylose and amylopectin with straight chain joined by α-1,4 linkage
Starch
Glucose units of tetrasaccharide
raffinose + D-glucose
NSP present in wheat
arabinoxylan
The NSP present in barley
Beta-glucans
The NSP present in soybeans
oligosaccharides such as stachyose and raffinose
cause poor digestibility of dry matter of these feedstuffs
NSP