Lamb carcass quality of Timahdite and INRA 180 breeds assessed on station by ultrasound and at slaughter house

摘要

Techniquestoestimateanimal#8217;scarcasscompositionarebasedonpostmortemorinvivomeasures.Theobjectiveofthisresearchwastocomparecarcassqualitymeasuredatthe13thriblevelforbackfatthickness,depthandareaoftheLongissimusDorsimuscleusinginvivoandpost-mortemmethods.TheultrasoundmeasurementswereperformedusingtheAquilaVetProdeviceequippedwithamultifrequencylinearprobe.Controlsinvolved9Timahditeand12INRA180crossbreds#8217;lambs.Theaveragevaluesforinvivoandpostmortemmeasureswererespectively4.44and4.63mmforbackfatthickness,28.04and30.41mmforthedepthoftheLongissimusDorsimuscle,11,66and13,62cm2fortheareaoftheLongissimusDorsimuscle.Thegenotypeoflambhadahighlysignificanteffect(p0.01)ontheareaoftheLongissimusDorsimusclemeasuredonthecarcass.Thesexhadasignificanteffect(p0.05)onalltraitscontrolledinvivoandpostmortemandtherearingtypehadasignificanteffect(p0.05)onthefatthicknessmeasuredonthecarcass.Thevaluesobtainedbytheultrasoundmethodweresignificantly(p0.05)lowerthanthosemeasuredonthecarcassforthicknessandareaoftheLongissimusDorsimuscle.Differenceswithincrossbreed(INRA180)aresignificantforthicknessandareaoftheLongissimusDorsimuscle.écouterLirephonétiquementThecorrelationcoefficientsbetweeninvivoandpostmortemmeasurementsarehighandsignificantforthebackfatthickness(0.92),thedepth(0.73)andthearea(0.67)oftheLongissimusDorsimuscle.Itwasconcludedthatthedatageneratedbyultrasoundmethodisaccurateandcanbeusedtopredictcarcassqualityonalivelambs.