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