植酸酶和纖維素酶對蛋雞生產(chǎn)性能和營養(yǎng)物質(zhì)利用的影響.pdf

1、東北農(nóng)業(yè)大學(xué)碩士學(xué)位論文植酸酶和纖維素酶對蛋雞生產(chǎn)性能和營養(yǎng)物質(zhì)利用的影響姓名：王麗娟申請學(xué)位級(jí)別：碩士專業(yè)：動(dòng)物營養(yǎng)與飼料科學(xué)指導(dǎo)教師：單安山2000.5.1王麗娟英文摘要20006EffectsofSupplementalMicrobialPhytaseandCellulaseonPerformanceandNutrientsUtilizationofLayersAbstractPhytateandfiberinplantcells

2、havethepotcnlialofbindingwithproteinandmindalssuchasPandC擴(kuò)，C礦，F(xiàn)，，Mn，ZnandsoontoforminsolublecomplexeswhichmayreducetheutilizationofthesenulrientsFurthermore，phytateandfibermayalsoformcomplexeswithsomedigestiveenzymesinth

3、egastrointas(inal在actanddecreasetheacdvityoftheseenzymeswithasubsequentdecreaseinthedigc斌ibili鑼ofdieta：ynulrientsPhytase，myo—inositolhexaphosphatephosphohydrolase，istheenzymethatreleasePfromphytateECellulasetendtodestroy

4、cellwalltoreleasenl血i∞臨Respectivesupplcmemationofphytaseorcelhlasejnthedietsoflayingh∞shasbeenrepo：rtedto／mprovethed／etaryphytamPbioavailabilityandothernutrients碰ad鋤Butthesupplementalinteractionsofthetwoaizymcshavenotbe鼬

5、reportedTheobjectiveofthisa中豇im咖wastoinvestigatetheefE酏tsofsupplementationofmicrobialphyta∞andcdhlaseandtheirinteractionsonlayersbasedellmaizeandsoybeanmeal拙byafeeding缸al，adigesting證alaslaught(耐_g仃ialandlabceatory％pe血呦m1

6、9218weekoldHisexlaycxsw∽u(yù)sedina31weekfeeding仃ialandw∞r(nóng)andomlyarrangedto8groupswith4replicatesand6foreachreplicateA222factorialarrangementoftreaunentswasusedwithtwolevelsofnonphytamP(038％andO16％)twolevelsphytuse(300U／kgmd

7、0)twolevelscellulase(O1％and0)11艟dietw羽formulated聃r】∞目Ⅱm1∞dedbyNa(ionalResearchCouncil(1994)Whtc觚beccmludedfiomtheremaltsis姻follows：1Performance：Additionof01％celhlasesignificantlydecreasedfeedimake(P005)Nosulmlemennaleffe

8、ctofphytaseonperformancewasfound2Utilizationofnutricmts：300U／kgphytasesignificantlyimprovedtheutilizationofdietarycrudeash，crudeprotm，calcium，totalphosphorusendcopper(P005)Additionof01％cdhlsse缸啦e∞edthelniii2斌ionofczude矗b