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ANSC 321 Exam 1 Questions And Answers
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  • September 7, 2024
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  • 2024/2025
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ANSC 321 Exam 1 Questions And
Answers


Approximately i___ iof ithe ilabor iforce iin kr kr kr kr kr kr




the iU.S. iworks iin iagriculturally irelated
kr kr kr kr kr




occupations i- icorrect iAnswers i✔✔ i-2 ito i3 i% kr kr kr kr kr kr kr kr




Feed icosts irepresent ifrom i___ ito i___ iof ithe itotal icost iof iraising ilivestock i- icorrect iAnswers
kr kr kr kr kr kr kr kr kr kr kr kr kr kr kr kr




i✔✔ i-50 ito i85%
kr kr kr kr




• iSwine i60-85%
kr kr




• iPoultry i55-70%
kr kr




• iDairy i65-75%
kr kr




• iBeef ifeedlot i70%
kr kr kr




• iFeeder ilambs i50%
kr kr kr




Hawaii iis iprobably ieven ihigher iand iits iincreasing i...
kr kr kr kr kr kr kr kr




Animal iProductivity i- icorrect iAnswers i✔✔ i-➢ iAdequate ifeeding ifor ihigh iproduction iis ian
kr kr kr kr kr kr kr kr kr kr kr kr kr




essential icomponent iof ithe itotal ifarm ienterprise.
kr kr kr kr kr kr




➢ iAnimal inutrition iassumes ia ispecial isignificance ifor idomestic iproduction.
kr kr kr kr kr kr kr kr kr




Objectives:

• iMaximize igrowth irates i(meat ianimals)
kr kr kr kr kr




• iIncrease ireproductive iefficiency
kr kr kr




• iPromote ihigh ilevels iof imilk iproduction
kr kr kr kr kr kr

,• iSustain ihigh iquantities iof iquality iwool
kr kr kr kr kr kr




• iMaintain ihealthy ianimals ito ioptimize ithe ibody's idefense imechanisms.
kr kr kr kr kr kr kr kr kr




➢ iTherefore, ifood i(humans) ior ifeed i(animals), iis ibasic ito ilife i& iessential ifor iproductivity.
kr kr kr kr kr kr kr kr kr kr kr kr kr kr




Water i- icorrect iAnswers i✔✔ i-➢Cheapest iand imost iabundant inutrient
kr kr kr kr kr kr kr kr kr




➢Most iessential inutrient kr kr




• iOften ioverlooked
kr kr




➢Mammals ican ilose inearly iall ifat iand iover ihalf iof ibody iprotein iand ilive
kr kr kr kr kr kr kr kr kr kr kr kr kr




➢10-15% iloss iof iwater iwill iresult iin ideath ifor iMOST ispecies
kr kr kr kr kr kr kr kr kr kr




• iCamels ican iwithstand i30% iloss
kr kr kr kr kr




Carbohydrates i- icorrect iAnswers i✔✔ i-➢ iLargest ipart iof ianimal's ifood isupply
kr kr kr kr kr kr kr kr kr kr kr




C1 i: iH2 i: iO1
kr kr kr kr




Sources:

▪ iSugars
kr




▪ iStarch
kr




▪ iCellulose; ihemicellulose
kr kr




▪ iGums
kr




Crude iFiber i= iCellulose, iHemicellulose
kr kr kr kr




NFE i= iSugars, iStarch
kr kr kr




Carbohydrates iMetabolism kr




- iGlucose ito iATP ito iEnergy
kr kr kr kr kr




TOTAL i38* iATP kr kr




(*2 iATP iis iused ito iinitiate ithe iglycolysis iprocess, ithus ithe inet igain iis i36 iMoles iof iATP iin
kr kr kr kr kr kr kr kr kr kr kr kr kr kr kr kr kr kr




iaerobic icondition)
kr kr




carbohydrate idigestion i- icorrect iAnswers i✔✔ i-starts iin ithe imouth iwith iamylase iconverting
kr kr kr kr kr kr kr kr kr kr kr kr




ipolysaccharides ito idisaccharides, icontinues iwith ipancreatic iamylase, ifinishes iwith
kr kr kr kr kr kr kr kr kr

, isucrase/maltase/lactase ifrom ithe ismall iintestine iconverting idisaccharides ito imonosaccharides
kr kr kr kr kr kr kr kr kr




i(glucose/fructose/galactose)
kr




Monogastric i
kr




-CHO iin ifeed kr kr




-digestive ienzymes i- iGlucose iin ithe ismall iintestine
kr kr kr kr kr kr kr




-Absorption iinto ithe iblood icirculation kr kr kr kr




Ruminant

-CHO iin ifeed kr kr




-microbial ifermentation i- iVolatile ifatty iacids iin ithe irumen
kr kr kr kr kr kr kr kr




-Absorption iinto ithe iblood icirculation kr kr kr kr




Lipids i- icorrect iAnswers i✔✔ i-- iMost ilipid iin idiets i(about i95%) iis iin ithe iform iof itriglycerides
kr kr kr kr kr kr kr kr kr kr kr kr kr kr kr kr kr




i(Esters iof iglycerol iand ithree ifatty iacids)
kr kr kr kr kr kr kr




- iOther ilipids iinclude iphospholipids, ifree ifatty iacids iand icholesterol
kr kr kr kr kr kr kr kr kr




Lipids iMetabolism
kr




Glycerol i+ iFatty iacids ito iATP ito i"Energy"
kr kr kr kr kr kr kr




➢Concentrated isource iof ienergy kr kr kr




1 ig. iLipid i= i9.45 ikcal
kr kr kr kr kr




1 ig. iCHO i= i4.20 ikcal
kr kr kr kr kr




➢Thus: i9.45 i= i2.25 iX imore ienergy
kr kr kr kr kr kr




4.20 ithan iCHO ior iProteins
kr kr kr kr




lipid idigestion i- icorrect iAnswers i✔✔ i-Lipid iDigestion
kr kr kr kr kr kr kr




-Triglycerides i(Bile/Lipase) kr

, -Emulsified iTriglycerides i(Pancreatic kr kr




Lipase)

-Monoglyceride i+ iFree ifatty iacids kr kr kr kr




[digestion] iwhen ichyme iis ipresent, ithe iduodenum isecretes icck i(cholecystokinin) ihormone iinto
kr kr kr kr kr kr kr kr kr kr kr




ithe iblood, iwhich istimulates ithe isecretion iof ipancreatic ienzymes iand ibile iand ipromotes isatiety;
kr kr kr kr kr kr kr kr kr kr kr kr kr kr




ibile imade iin ithe iliver iemulsifies ifat iin ithe ismall iintestine ibut iisn't ian ienzyme; ilipase iis ian
kr kr kr kr kr kr kr kr kr kr kr kr kr kr kr kr kr kr




ienzyme imade iin ithe ipancreas ithat ihydrolyzes ilipids i(also iin ithe ismall iintestine)
kr kr kr kr kr kr kr kr kr kr kr kr kr




Monogastric

-dietary ifat i(bile ienzymes) kr kr kr




-Glycerol i& iFatty iacids iin ismall iintestine
kr kr kr kr kr kr




-Absorption iinto ilymph i& iblood icirculation kr kr kr kr kr




Ruminant

-dietary ifat i(Microbial ifermentation)
kr kr kr




-Volatile ifatty iacids iin irumen kr kr kr kr




-Absorption iinto ilymph i& iblood icirculation kr kr kr kr kr




Protein i- icorrect iAnswers i✔✔ i-➢ iProteins iare ifound iin iall iliving icells, iwhere ithey iare iultimately
kr kr kr kr kr kr kr kr kr kr kr kr kr kr kr kr




iconnected iwith imany iphases iof iactivity ithat iconstitute ithe ilife iof ithe icell.
kr kr kr kr kr kr kr kr kr kr kr kr kr




C i- i53% iH i- i7% iO i- i23% iN i- i16% i
kr kr kr kr kr kr kr kr kr kr kr kr




(S,P) i<1% kr




➢ iProteins imust icontain iN iand iare igenerally imade iup iof i~16%.
kr kr kr kr kr kr kr kr kr kr kr




%N ix i6.25 i= iCrude iProtein
kr kr kr kr kr




➢ iAnimals ihave ino iprotein irequirement
kr kr kr kr kr




➢ iAnimals irequire iessential iamino iacids
kr kr kr kr kr




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