BeefGenetics:FeedEfficiencyReport
RFISummary
Customer:MedwayGrazingPty Sex:Bull Start/EndDate:
Units:Kg&Cm TrialGroup:DonaldsonFamilySaleTrial2
RFI&ADGDistribution
BeefGenetics:FeedEfficiencyReport
RFISummary
Customer:MedwayGrazingPty Sex:Bull
Start/EndDate:2024-08-05/2024-09-23
Units:Kg&Cm
TrialGroup:DonaldsonFamilySaleTrial3
DryMatter%:45.78%
BeefGenetics:FeedEfficiencyReport
RFI&ADGDistribution
Customer:MedwayGrazingPty
Sex:Bull
Start/EndDate:2024-08-05/2024-09-23 DryMatter%:45.78%
Units: Kg&Cm
TrialGroup:DonaldsonFamilySaleTrial3
RFI&ADGDistribution
BeefGenetics:FeedEfficiencyReport
RFISummary
Customer:MedwayGrazingPty Sex:Bull
Start/EndDate:2024-02-25/2024-04-25
Units: Kg&Cm
TrialGroup:DonaldsonFamilySaleTrial1
DryMatter%:47.70%
BeefGenetics:FeedEfficiencyReport
RFI&ADGDistribution
Customer:MedwayGrazingPty
Sex:Bull
Start/EndDate:2024-02-25/2024-04-25 DryMatter%:47.70%
Units: Kg&Cm
TrialGroup:DonaldsonFamilySaleTrial1
RFI&ADGDistribution
Glossaryof Terms*
FeedIntakeandPerformance
DMI:drymatterintake,ananimal’saveragedailydrymatter intakeduringtest.DMIisdependentonthedrymatter contentoftherationfedduringthetrialperiod.
StartWt.:trialstartweightwithstartdate
EndWt.:trialendweightwithenddate
ADG:averagedailygain
RawF:G:feedtogainratio,alsoreferredtoasfeed conversionratio(FCR).F:Gratioreferstotheamountof feedconsumedperunitofweightgainonadrymatterasis. Alowerratioisconsideredmorefavorable.Whileselection forF:G(FCR)resultsinanimalsthatgrowfasteritisalso associatedwithcattlethathavealargermaturesize.
Adj.F:G:adjustedfeedtogainratio,accountsfor differencesinanimalageandsizeduringtest.Thiscurrently isthestandardoffeedconversionefficiencyusedbythe BeefImprovementFederation.ThisvalueisthebaseF:G valuemultipliedbythetrialgroup’smetabolicmidweight dividedbytheindividual’smetabolicmidweight.Alower adjustedF:Gratioismorefavorable.
ResidualFeedIntake(RFI)
RFI:residualfeedintake,RFI,isameasureoffeed efficiencycalculatedasthedifferencebetweenandanimal’s actualfeedintakeanditspredictedfeedintake,foragiven levelofproduction.WhenRFIisusedasageneticselection tool,theresultingprogenywillconsumelessfeedforthe samelevelofproduction.RFIisindependentofgrowth, bodysizeandotherperformancetraits(Kochetal.,1963), selectionforanimalswithlowRFIwillleadtoreducedfeed intakeandimprovedfeedefficiencywithoutcompromising bodysize,carcassqualityorgrowth.LowerRFIvaluesare morefavorable,cattlewithlowRFIvaluesaremoreefficient thancattlewithhighRFIvalues.
RFIRank:ananimal’snumericalrankofitsphenotypicRFI withinthetrialgroup.
RADG:residualaveragedailygain,thedifferencebetween ananimal’sactualweightgainanditspredictedgainbased onitsdrymatterintake,bodyweightmaintenanceandfat cover.AlthoughtheconceptofRADGappearstobesimilar toRFIastheybothcontainthesameorsimilarcomponents, thetwoconceptsworkinverydifferentways.Residual averagedailygainputseachanimal’sfeedintakeonthe sameplayingfieldandlooksatdifferencesinaveragedaily
gainwhileRFIputseachanimal’sgrowthandbodysizeon thesameplayingfieldandlooksatdifferencesinfeed intake.WhenselectingforRADG,cattlewithhighervalues aremoredesirablethanthosewithlowervalues,meaning thattheyhadgreaterADGforthesameamountoffeed. Thismeasureisnotindependentofbodysizesocaution shouldbeusedifmaturecowsizeisimportanttoyourherd.
RADGRank:ananimal’snumericalrankofit’sphenotypic RADGwithinthetrialgroup.
ExpectedProgenyDifferences(EPDs)
RFIEPD:residualfeedintakeexpectedprogeny difference,calculatedforeachindividualanimalbasedon theirphenotypicRFIvaluesandpedigreeinformation.Lower RFIEPDsaremorefavorable.
RFIAccuracy:referstothereliabilityofthecalculatedRFI EPDvalue.Theaccuracyisdependentontheamountof phenotypicandpedigreeinformationlinkedtoananimal.As moreinformationiscontributedtoVytelle’sefficiency database,thenumberofrelativestoananimalcanincrease, resultinginanincreaseinaccuracy.Accuracyvaluesare between0and1.
RFI%Rank:rankofananimal’sRFIEPDasapercentage oftheentireRFIEPDdatabase.Lowerpercentrank indicatesabetterRFIEPD.
ADGEPD:averagedailygainexpectedprogeny difference,calculatedforeachindividualanimalbasedon theirphenotypicADGvaluesandpedigreeinformation. HigherADGEPDsaremorefavorable.
ADGAccuracy:referstothereliabilityofthecalculated ADGEPDvalue.Theaccuracyisdependentontheamount ofphenotypicandpedigreeinformationlinkedtoananimal. AsmoreinformationiscontributedtoVytelle’sefficiency database,thenumberofrelativestoananimalcanincrease, resultinginanincreaseinaccuracy.Accuracyvaluesare between0and1.
ADG%Rank:rankofananimal’sADGEPDasa percentageoftheentireADGEPDdatabase.Lowerpercent rankindicatesabetterADGEPD.
DMIEPD:drymatterintakeexpectedprogenydifference, calculatedforeachindividualanimalbasedontheir phenotypicDMIvaluesandpedigreeinformation.Animals withlowerDMIEPDstendtoeatless
DMIAccuracy:referstothereliabilityofthecalculated DMIEPDvalue.Theaccuracyisdependentontheamount ofphenotypicandpedigreeinformationlinkedtoananimal. AsmoreinformationiscontributedtoVytelle’sefficiency database,thenumberofrelativestoananimalcanincrease, resultinginanincreaseinaccuracy.Accuracyvaluesare between0and1.
DMI%Rank:rankofananimal’sDMIEPDasa percentageoftheentireDMIEPDdatabase.Lowerpercent
rankindicatesalowerDMIEPD.
*Vytelle’scomprehensiveglossaryoftermsislisted.Ifyouareinterestedinvaluesorsectionslistedherebuttheyaren'tinyourreport,pleasecontactyourcommercialteam representativeoremailinfo@vytelle.comtolearnmore.
