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62 Cards in this Set

  • Front
  • Back
feed
any material, after ingestion by the animal, is capable of being digested, absorbed, and utilized. not all feed is utilized
components of animal feeds
water, dry matter (inorganic matter- minerals, organic matter- carbs, lipids, protein, vitamins)
under heat stress, animals need ________% more water
50-100%
5 factors affecting water intake
temp., feed type, pasture, water quality, stage of production
protein contains
carbon, hydrogen, oxygen, nitrogen
structure of proteins
composed of amino acids
lipids
fats that contain carbon, hydrogen, and oxygen
differences between saturated and unsaturated fat
saturated- no double bonds between carbons, solid at room temperature.
unsaturated- liquid at room temperature, double bonds
___ has a higher energy density than other nutrients
fat
gross energy of fat
9.45 kcal/g
gross energy of carbs
4.2 kcal/g
gross energy of protein
5.65 kcal/g
volatile fatty acids
end product of carb digestion in the ruminant. produced by microbial fermentation. odiferous
carbs are formed by what?
photosynthesis in plants
3 examples of complex carbs
cellulose, hemicellulose, lignin
4 fat-soluble vitamins
A D E K
2 water-soluble vitamins
B (there are 9) and C
where is vitamin A found and what happens if there's a deficiency?
green leafy forages. night blindness
where was vitamin D thought to come from? and what's the purpose?
sunlight. enhance intestinal absorption, mobilization and retention of Ca and P in the body
purpose of vitamin E
tocopherols, intra and inter muscular antioxidants, protects against phagocytosis and associated byproducts
purpose and source of vitamin K
normal blood clotting. sources are leafy green plants
source and purpose of thiamin
vit B1 is found in whole grains and starchy roots. coenzyme A is needed in Krebs cycle
7 macro minerals
calcium, potassium, phosphorus, magnesium, sodium, sulfur, chlorine
mature animals need ______ oz/day of salt
.25-.50 oz/day
forages are high in ___ and low in ___
high in Ca and low in P
what is the ratio of Ca and P needed?
2:1 Ca:P
purpose of magnesium
skeletal maintenance and enzyme systems
requirement of magnesium in diet (%)
.15%
magnesium deficiency
caused by grass tetany. lush pastures with fast growing forage. cause low blood Mg. signs are convulsions, salivation, and frothing at mouth
purpose of potassium
intramuscular fluids, osmotic pressure
low potassium causes ____________
listnessness and stiffness
grazing animals rarely have potassium problem unless ___________
grazing mature or droughty forages
most potassium problem seen in __________
feeding areas
sulfur is needed most in _______________
wool-producing animals
people thought _____ was a good insect repellant
sulfur
sulfur can be toxic if given over _________%
.4%
9 micro minerals
iron, iodine, manganese, copper, cobalt, zinc, molybdenum, selenium, chromium
purpose of iodine
synthesis of thyroid hormones
iodine deficiency
goiter (swelling of jaw. weak lambs are born without wool as well)
sheep need ________ ppm of iodine
.10-.80 ppm
_________ areas of US are low in iodine
northeast
purpose of copper
nervous system, pigmentation of skin
deficiency of copper
red hair
over ____ ppm copper will kill sheep
20 ppm
purpose of iron
blood
iron deficiency
heavy parasite load, early weaned lambs
pigs are ____________ so iron must be injected
raised on concrete
the only micro mineral regulated by the USDA
selenium
purpose of selenium
cardiac and skeletal muscle function, early embryonic development, and tooth development. goes hand in hand with vitamin E
over ___ ppm selenium can be toxic
3 ppm
roughages are ____ in energy and ____ in fiber
low in energy and high in fiber. also variable in protein content
_______, a roughage, is high in protein
alfalfa
carbonaceous concentrates have _____ energy and ____ fiber
high energy and low fiber. also low protein
_____ is #1 feed (carbonaceous concentrate)
corn
proteinaceous concentrates have _________% protein
greater than 20%
what is the #2 feed? (proteinaceous concentrate)
soybean meal
6 proteinaceous concentrates that come from plant matter
soybean meal, cottonseed meal, linseed meal, peanut meal, corn gluten meal, brewers dried grains
3 proteinaceous concentrates that come from animal matter
meat and bone meal, blood meal, dried whey
urea and biuret have _____% nitrogen
46% nitrogen
ruminants need ____% protein
281%
______ is an insect growth regulator
rabon
cattle prefer roughages (3) in this order
grass, forbes, browse