Received: 14-04-2020
Accepted: 21-05-2020
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Use of Passion Fruit Peel, Dry Maize Cobs, and Sugarcane Bagasse in the Fermented Total Mixed Ration to Replace Maize Silage for Holstein Heifers in Moc Chau-Son La
Keywords
By-products, feed, FTMR, heifers
Abstract
TwoexperimentswereconductedfromOctober2017toDecember2019toevaluatetheutilizationofpassionfruitpeel,drymaizecobsandsugarcanebagasseinthefermentedtotalmixedration(FTMR)toreplacemaizesilageintherationforHolsteinheifers.Thefirstexperimentassessedvisiblequalitiesandchemicalcompositionofthefermentedtotal mixed rations(FTMR), inwhich,FTMR1contained 40%ofpassionfruitpeel,25%ofsugarcanebagasse;FTMR2contained passionfruitpeel(40%),drymaizecobs(12,5%);andFTMR3containedFTMR2contains40%passionfruitpeel,12,5%ofdrymaizecobs,and12,5%ofsugarcanebagasse)underthelaboratoryconditionsattheFacultyofAnimalScience,VNUA.ThesecondcomparedtheselectedFTMR2andFTMR3tothecurrentrationusingmaizesilageonadairyfarminMocChau.Inthelaboratory,theFTMRrationswereensilagedinananaerobicconditionin10-literplasticbottleswithtotal18bottlesfor3rationsin2periodsof3and5weeks.TheFTMR2andFTMR3wereselectedtoensilageinathicknylonbag1.5mindiameterand2.5mlongonfarmfeedingtrial.Resultsshowedthatitwaspossibletousepassionfruitpeelupto40%,drymaizecobsupto25%andsugarcanebagasseupto12.5%(VCK)inFTMRwithgoodquality.TheFTMR2andFTMR3usingpassionfruitpeel,drymaizecobsandsugarcanebagassewereabletoprovidesufficientnutritionalrequirementsofHolsteinheifers,increasingtheheifers’weightgain onthe averagetoover800g/head/day.However,theFTMRusingpassionfruitpeelanddrymaizecobsshowedbetterresultsthanthatusing sugarcanebagasse.
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