The influence of age and feeding regimen on the carcass traits of Arsi-Bale goats

摘要

ThestudywasconductedtoseetheeffectofageandfeedingregimenonthecarcasstraitsofArsi-BalegoatskeptunderfeedlotorrangeconditionatAdamiTuluAgriculturalresearchcenter.Atotalof44malegoatsofthreeagecategories(sixmonths,12monthsand24months)wereassignedrandomlytorangeandfeedlottreatments.Arsi-Balegoatsfromtwofeedingregimen:Feedlot(FL)andRange(R)wereslaughteredandliveandcarcassweightweretaken.Twenty-fourhoursafterdeathvariousyieldmeasurementswerecollected.Carcassweightwashighlysignificant(P0.0001).Therewassignificant(p0.05)interactioneffectbetweenfeedandagegroupswithregardtoweightgain.Weightgainofsixmonthgoatsgrazingonrangewassignificantlyhigher(P0.05)comparedtotheircontemporariesmanagedonfeedlot,butnosignificanceobservedinotheragegroupsandfeedingregimen.Yearlinggoatsmanagedonrangedepositedhigher(p0.01)scrotalfatthantheircontemporariesmanagedonfeedlot.IngenerallyfeedinggoatsinthefeedlotisnotrecommendedforArsiBalegoatsastheyperformequallywhenraisedonlyintherangecondition.Eventhoughthereisnosignificantwithregardtoweightgainindifferentages,12monthsgoatsmanagedonrangearegenerallybetterforweightgain.