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GradingtheCarcassMeatqualitygradeiskeyinaWagyubeefoperationandshouldbeconsideredfundamentalforallWagyubreeders.OverthelastdecadecarcassgradinghasbecomeanessentialelementforLoneMountainWagyu,ourbeefdivision–andmeaningfulforourcattlebreedingoperationaswell.Ourmostsophisticatedbeefcustomers(restaurantsandhomeconsumersalike)trustourbrandbecauseoftheobjective,transparentgradingsystem.Andofcourse,therigorandprecisionofthecarcassgradingtoolsoutlinedbelowgiveusinvaluableguidanceastofuturebreedingdecisions.
InrecentyearstheJapanesehavebeendevelopingtheabilitytomeasurebeefcarcassesobjectively,usingdigitalcameratechnology–andanalyzingthecapturedimagerywithsoftwaretocalculateimportanttraits,suchas:
•IMF(Intra-muscularfatpercentage)•MarblingFinenessandCoarseness•RibEyeArea•RibEyeShape
Initially,thecameraandsoftwareweredevelopedasresearchtools.ButunderthedirectionofProfessorKeigoKuchida,ObihiroUniversityinHokkaido,Japan,thecameraandsoftwarehaveevolvedtomakethetechnologycommerciallyviable.Thecamera/softwaretoolisrapidlybecomingafixtureinslaughterfacilitiesinJapanandattractinginterestfromcountrieselsewhere.
In2010LoneMountainacquiredthetechnology(cameraandsoftware)fromJapan.NowLoneMountaincarcassesaremeasuredwiththesamematrixasthecarcassqualitygradeinformationthatisusedandreferencedbytheJapanMeatGradingAssociation(JMGA).
Thecameraidentifiestraitsthatholdeconomicimportance,suchasthequalityofmarbling,whichcansignificantlyinfluencethevalueofthecarcassinJapanattheauctionmarkets.Forexample,finenessofmarblingisaparticulartraitthatisprizedovercoarsermarbling;picturedbelowaretwoimagesdisplayingcoarseandfinelymarbledribeyes,respectively.
ThefocusofthisparticulartraithasbeenofinteresttotheJapaneseinthepast,andnowisincreasinglybeingidentifiedasanimportantcharacteristictocountriesproducingWagyuoutsideJapan.
ThecombinationofparticularcarcassqualitytraitsanalyzedbythecarcasscameraresultsalgorithmicallyinanoverallBeefMarblingScore(BMS).TheevolutionofthatBMSmarblingstandardhasbeencauseforsomeconfusion.
TheJMGABeefCarcassGradingStandard(BMS)wasdevelopedin1988toevaluatebeefcarcasses.ThelevelsofmarblingforBMSwerebasedonplasticmodels–rudimentaryatbestgivenrecentdevelopments.In2008,photographswereutilizedandreplacedthe1998standard.In2014Japanraisedthebaragain.CurrentlyaBMS3graderequiresaminimumof21%IMF.TheimagesusedtoestablishthenewstandardwereselectedusingacombinationofIMF%andafinenessindex.ThechartbelowshowsthedifferencebetweentheoriginalJapaneseBMSgradingandthe2008standard–the2014standardwasrefinedandraisedevenhigher.
JapanesecarcassesareribbedbetweenthesixthandseventhribthroughoutJapancontrastingwiththeUSstandard,whichiscutbetweenthe12thand13thrib.Thedifferenceanddistributionofmarblingwithineachcarcassispicturedonthefollowingpage.
TheJapanesealsohaveadesignationfortheoverallqualityofthecarcass–whichincludestheBMSscoreandyieldgrades.Simplyput,therearegradesofbeefyieldgoingfromAtoCandtheBMSscoresarenotedbyadesignationof1to5(BMSscoresof8to12aregivena5;BMS5through7aregivena4;etc).NotethattheBMSgradeisbasedonanumberofdifferentfactors,includingtheamountofmarbling;color;firmnessandtexture;andotherfactors.ThemosthighlyprizedcarcassesaredeemedanA-5andthelowestgradeisC-1.
AtLoneMountain,wefocusprimarilyontheamountofmarbling(IMF%);thefinenessorcoarsenessofthemarbling;andthesizeandshapeoftheribeye.TheJapaneseBMSstandard,ontheotherhand,takesintoconsiderationmanymorefactorsasmentionedabove.ThereareanumberofreasonswhyweatLoneMountainopttoconcentrateonIMF%,finenessof
marbling,andtoalesserextent,shapeoftheRibeye,insteadoffollowingtheBMSstandardlikeourJapanesecounterparts.Mostimportantly,wehavefoundthatthereisagreatdealofconfusion,misinformation,andlackofunderstandingabouttheBMSstandardintheAmericanmarketplace.Fromamarketingperspective,weaimtokeepitassimpleaspossible,andtheclear,objectiveIMF%numbersservethatpurpose.
NotonlyhastheJapaneseBMSscalechangeddramaticallyovertime,buttheAustralianbeefindustryhastheirownBMSgradingsystem–AUSMEAT–whichchangedin2008inordertobettercompetewiththeJapanesestandard.TheJapaneseBMSsystemhaschangedthreetimesasnotedabove–butmanyindividuals(chefsincluded)stillrelatetotheoriginal2008gradingstandard.Meanwhile,theBMSscaleusedintheUSis,again,differentfromtheothertwocountries’scales.Wemaintain,therefore,thatthemostaccurateanddependablesystemistheonerecordedwiththecamerathattakeseachimagefromthesamepositionanddistancefromtheribeyesurface–andwithidenticallighting–whichisthenanalyzedwithsoftwarethatproducesnumbersthatwecanbeassuredareobjectiveandaccurate,butmoreimportantly,easiertounderstandandrelateto.
Thesenumbersrepresentclear,actionableguidancethatourclientscanrelyuponandunderstand–withouttheconfusionofthemanychangingBMSstandards.
LoneMountain’sgeneticsprogramisdependentontheperformancedatarecorded,imagedandanalyzedontheherdfrombirthtoslaughter.Itshouldprovideconfidenceforvaluedclientsthatthereexistsactual,objectivesubstancebehindeachbreedingdecisionthatismade,andineveryfacetoftheLoneMountainCattlebusinessmodel.
REF:conversations,writingandimagessuppliedbyProfessorKeigoKuchida,ObihiroUniversity,Obihiro,Hokkaido,Japan