ANSC EXAM 3 REVIEW QUESTIONS AND CORRECT ANSWERS

ANSC EXAM 3 REVIEW QUESTIONS
AND CORRECT ANSWERS
WhatA2areA2factorsA2affectingA2reproductiveA2performance?A2-A2Ans--
Nutrition,A2environment,A2disease,A2anatomicalA2defects,A2endocrineA2systemA2imbalance
s

WhatA2isA2"flushing"A2asA2itA2relatesA2toA2nutrition?A2-A2Ans--
IncreasedA2theA2levelA2ofA2nutritionA2forA2aA2heifer/cowA2~30A2daysA2beforeA2breeding.A2
-ThisA2increasesA2theA2rateA2ofA2ovulationA2inA2theA2herd

HowA2oftenA2doA2producersA2wantA2toA2calve?A2-A2Ans--OnceA2everyA212A2months

DoA2cowsA2inA2thin,A2moderate,A2orA2goodA2conditionA2showA2estrusA2soonestA2afterA2calvi
ng?A2-A2Ans--Good

WhyA2doA2firstA2timeA2heifersA2needA2extraA2nutrients?A2-A2Ans---
TheyA2willA2beA2lactatingA2forA2theA2firstA2time
-TheyA2areA2stillA2growing
-TheyA2willA2experienceA2uterineA2involutionA2forA2theA2firstA2time

WhatA2twoA2dietaryA2componentsA2needA2toA2beA2monitored?A2-A2Ans--
EnergyA2andA2Protein

WhatA2areA2theA2distinguishingA2featuresA2ofA2mammals?A2-A2Ans--
HairA2andA2mammaryA2glands

HowA2manyA2glandsA2andA2teatsA2areA2inA2theA2cow?
Mare?
Ewe?
Sow?A2-A2Ans--CowA2=A24A2glands,A24A2teats
MareA2=A24A2glands,A22A2teats
EweA2=A22A2glands,A22A2teats
SowsA2areA2multiparous,A2withA26-20A2teatsA2inA2twoA2rowsA2alongA2theA2abdominalA2wall

WhereA2isA2milkA2synthesized?A2ByA2whatA2cells?A2-A2Ans--
MilkA2isA2synthesizedA2byA2epithelialA2cellsA2liningA2theA2lumenA2ofA2alveoli

WhatA2doesA2"innervationA2ofA2theA2udder"A2mean?A2-A2Ans--
TheA2outsideA2surfaceA2ofA2theA2udderA2isA2extremelyA2innervatedA2soA2thatA2theA2motherA
2canA2feelA2herA2offspringA2suckling,A2whileA2theA2insideA2ofA2theA2udderA2hasA2noA2innerv
ation

, WhatA2isA2theA2differenceA2betweenA2endocrineA2andA2exocrine?A2-A2Ans--
EndocrineA2=A2ductless;A2secretesA2hormonesA2intoA2blood
ExocriceA2=A2secretesA2fluidA2intoA2aA2duct

WhatA2areA2protectiveA2factorsA2inA2milk?A2-A2Ans--
Lactoferrin,A2lysozymes,A2andA2immunoglobulins

WhatA2isA2theA2compositionA2ofA2milk?A2-A2Ans--WaterA2=A288%
SolidsA2=A212%

WhatA2areA2someA2reasonsA2milkA2compositionA2canA2vary?A2-A2Ans---
TimeA2ofA2milkingA2(beginningA2orA2end)
-TimeA2ofA2yearA2(SummerA2vsA2Winter)
-StageA2ofA2lactation
-SpeciesA2ofA2animal
-BreedA2ofA2animal

WhatA2areA2symptomsA2ofA2Mastitis?A2HowA2isA2itA2testedA2forA2andA2treated?A2-A2Ans--
Symptoms:
A2-clotsA2orA2flakesA2inA2milk
A2-swollen,A2hotA2udder
A2-sensitiveA2udder
TestedA2forA2viaA2CaliforniaA2MastitisA2Test
TreatedA2withA2intramammaryA2injectionA2ofA2antibiotics

WhatA2isA2colostrumA2andA2whyA2isA2itA2important?A2-A2Ans--
ItA2isA2theA2firstA2milkA2secretion.A2ItA2isA2importantA2becauseA2itA2containsA2protectiveA2fac
torsA2suchA2asA2immunoglobulinsA2thatA2provideA2passiveA2immunityA2toA2offspring.A2ItA2c
anA2onlyA2beA2absorbedA2withinA224A2hoursA2afterA2parturition

KnowA2lactationA2terminologyA2-A2Ans--Mammogenesis
Lactogenesis
MilkA2Secretion
MilkA2removal
Lactation
Galactopoesis

KnowA2theA2structureA2ofA2theA2udderA2-A2Ans--AlveoliA2withA2epithelialA2cells
A2-A2milkA2ducts
A2-A2glandA2cistern
A2-A2annularA2ring
A2-A2teatA2cistern
A2-A2streakA2canal


WhatA2hormoneA2isA2responsibleA2forA2milkA2letdown?A2WhereA2isA2itA2produced?A2-
A2Ans--Oxytocin;A2itA2isA2producedA2inA2theA2posteriorA2pituitary