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ANSC 321 Exam 1 Questions And Answers
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ANSC 321 Exam 1 Questions And AnswersANSC 321 Exam 1 Questions And AnswersANSC 321 Exam 1 Questions And AnswersANSC 321 Exam 1 Questions And AnswersANSC 321 Exam 1 Questions And AnswersANSC 321 Exam 1 Questions And AnswersANSC 321 Exam 1 Questions And AnswersANSC 321 Exam 1 Questions And AnswersANS...

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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

the iU.S. iworks iin iagriculturally irelated

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

Feed icosts irepresent ifrom i___ ito i___ iof ithe itotal icost iof iraising ilivestock i- icorrect iAnswers i✔✔ i-50
ito i85%




• iSwine i60-85%

• iPoultry i55-70%

• iDairy i65-75%

• iBeef ifeedlot i70%

• iFeeder ilambs i50%

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

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

essential icomponent iof ithe itotal ifarm ienterprise.

➢ iAnimal inutrition iassumes ia ispecial isignificance ifor idomestic iproduction.

Objectives:

• iMaximize igrowth irates i(meat ianimals)

• iIncrease ireproductive iefficiency

• iPromote ihigh ilevels iof imilk iproduction

,• iSustain ihigh iquantities iof iquality iwool

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

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

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

➢Most iessential inutrient

• iOften ioverlooked

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

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

• iCamels ican iwithstand i30% iloss

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

C1 i: iH2 i: iO1

Sources:

▪ iSugars

▪ iStarch

▪ iCellulose; ihemicellulose

▪ iGums

Crude iFiber i= iCellulose, iHemicellulose

NFE i= iSugars, iStarch



Carbohydrates iMetabolism

- iGlucose ito iATP ito iEnergy

TOTAL i38* iATP

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


carbohydrate idigestion i- icorrect iAnswers i✔✔ i-starts iin ithe imouth iwith iamylase iconverting
ipolysaccharides ito idisaccharides, icontinues iwith ipancreatic iamylase, ifinishes iwith

,isucrase/maltase/lactase ifrom ithe ismall iintestine iconverting idisaccharides ito imonosaccharides
i(glucose/fructose/galactose)




Monogastric i

-CHO iin ifeed

-digestive ienzymes i- iGlucose iin ithe ismall iintestine

-Absorption iinto ithe iblood icirculation



Ruminant

-CHO iin ifeed

-microbial ifermentation i- iVolatile ifatty iacids iin ithe irumen

-Absorption iinto ithe iblood icirculation

Lipids i- icorrect iAnswers i✔✔ i-- iMost ilipid iin idiets i(about i95%) iis iin ithe iform iof itriglycerides i(Esters
iof iglycerol iand ithree ifatty iacids)


- iOther ilipids iinclude iphospholipids, ifree ifatty iacids iand icholesterol



Lipids iMetabolism

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



➢Concentrated isource iof ienergy

1 ig. iLipid i= i9.45 ikcal

1 ig. iCHO i= i4.20 ikcal

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

4.20 ithan iCHO ior iProteins

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

-Triglycerides i(Bile/Lipase)

, -Emulsified iTriglycerides i(Pancreatic

Lipase)

-Monoglyceride i+ iFree ifatty iacids



[digestion] iwhen ichyme iis ipresent, ithe iduodenum isecretes icck i(cholecystokinin) ihormone iinto ithe
iblood, iwhich istimulates ithe isecretion iof ipancreatic ienzymes iand ibile iand ipromotes isatiety; ibile
imade iin ithe iliver iemulsifies ifat iin ithe ismall iintestine ibut iisn't ian ienzyme; ilipase iis ian ienzyme imade
iin ithe ipancreas ithat ihydrolyzes ilipids i(also iin ithe ismall iintestine)




Monogastric

-dietary ifat i(bile ienzymes)

-Glycerol i& iFatty iacids iin ismall iintestine

-Absorption iinto ilymph i& iblood icirculation



Ruminant

-dietary ifat i(Microbial ifermentation)

-Volatile ifatty iacids iin irumen

-Absorption iinto ilymph i& iblood icirculation

Protein i- icorrect iAnswers i✔✔ i-➢ iProteins iare ifound iin iall iliving icells, iwhere ithey iare iultimately
iconnected iwith imany iphases iof iactivity ithat iconstitute ithe ilife iof ithe icell.


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

(S,P) i<1%

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

%N ix i6.25 i= iCrude iProtein

➢ iAnimals ihave ino iprotein irequirement

➢ iAnimals irequire iessential iamino iacids

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