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1、ANIMALFEEDSCIENCEANDTECHNOLOGYELSEVIERAnimalFeedScienceandTechnology51(1995)73-90EffectofammoniatreatmentandcarbohydratesupplementationontheintakeanddigestibilityofbarleystrawdietsbysheepC.Cast&lo,M.Fondevila*,J.A.Guada,A.deVegaDepartamentodeProduccibnAnimalyCienciade1
2、0sAlimentos,UniversidaddeZaragoza,M.Serve&177;50013Zaragoza,SpainReceived15December1993;accepted17May1994AbstractThechangesinstrawvoluntaryintakeandapparentdigestibilitycausedbytheammo-niationofstrawandenergysupplementationindietsfedtoadult,non-productivesheepwerestudi
3、edintwoexperiments.InExperiment1,untreated(US)orammoniatreated(TS)barleystrawweregivenastheonlyfeedtofourewesinacross-overdesign.Ammo-niationincreasedstrawdrymatter(DM)intakefrom30.2to50.6gkg-’LW”.75,organicmatterdigestibility(OMD)from0.438to0.519anddigestibleorganicma
4、tterintake(DOMI)from12.5to24.7gkg-’LW”.75,allowingenergymaintenancerequirementstobemet.InExperiment2,threegroupsoffourewesreceivedUS,withanotherthreegroupsoffourreceivingTS,bothsupplementedwithmeadowgrasshay(H)jrolledbarley(B)orsugar-beetpulp(P)ina2x3factorialdesign.Ea
5、chsupplementwasgiveninamountsof150,300,450and600gday-‘,inaLatin-squaredesign.Thetypeofsupplementdidnotsignificantlyaffectstrawintakeatanylevelofinclusion.ThelevelofsupplementationscarcelyaffectedUSintake,whereasDMintakeofTSdiminishedlinearly.Substitutionrateswere0.49+0
6、.088,0.61+0.085and0.5520.131forTS-H,TS-BandTS-Pdiets,re-spectively(P>0.05).Apparentdigestibilityofstrawwasnotsignificantlyaffectedbysup-plementation.IncreasesintotalDOMIwhenthelevelofsupplementationwasaugmentedwerelowerinTSthaninUSdiets,andwithHthanwithBorPassupplement
7、s.ToreachtheDOMIobtainedwithTSastheonlyfeed,UShastobesupplementedwith420,272or269gDMofH,BorP,respectively.Keywords:Ammoniatreatment;Barleystraw;Carbohydrate;Digestibility,barley;Sheep,adult;Supplementfeeding*Correspondingauthor.0377-8401/95/$09.5001995ElsevierScienceB.
8、V.AllrightsreservedSSDI0377-8401(95)00682-Y14C.Castrilloetal./AnimalFeedScienceandTechnology5l(1995)73-901.Introducti
