Elsevier期刊投稿英文模板(Animal Feed Science and Technology).docx

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Rumenlysineesto71g/d,resultedinanestimatedforestomachescapeoflysineof35g/kgoflysinefed,alevelthatisonlyabout1/6ofthosereportedinpreviousstudiesbaseduponshorttermpulsedosingand/orfeedingstudies.
Keywords:lysine,forestomach,escape,rumen
Abbreviations:AA,aminoacids;ADF,aciddetergentfibre;BCS,bodyconditionscore;BW,bodyweight;DM,drymatter;RP,ruminallyprotected,TMR,totallymixedration;NDF,neutraldetergentfibre
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Itiswidelyacceptedthatdairycowshaverequirementsforaminoacids(AA)(RP)lysinethatescapestheforestomachundigested,therebymakingitavailableforabsorptioninthesmallintestine,thereislittleexperimentaldatatosupportproductivebenefitstosupplementationofdairyrationswithlysine.
Previousresearchers(Velleetal.,1997,1998;Voldenetal.,1998)havereportedruminalescapeoflysinethatvariedfromabout100to291g/kgofthelysinedosed,,particularlythehigherones,,themethodofadministrationoflysineinallthreeofthesestudies,asapulsedose,mayhaveresultedinarelativelyhighestimateofruminallysineescapeduetotransitorilyhighconcentrationsoflysineinrumenfluid,whichthenwashedoutoftherumenathighlevelsduetothehighpassageratesofrumenliquids.
TheobjectiveofthisstudywastofeedcowsunprotectedL-lysineHCl,atlevelssimilartoVoldenetal.(1998),butmixedintothediet,,forestomachNDFdigestion,forestomachescapeofmicrobialbiomass,andproductivityofthe