復(fù)合微生物菌劑在全株玉米青貯中的應(yīng)用與研究.pdf

1、碩士學(xué)位論文Thesisformasterdegree復(fù)合微生物菌劑在全株玉米青貯中的應(yīng)用與研究ResearchandApplicationofCompoundMicrobialAdditivesontheWholecropCornsilage學(xué)位申請人：任付平Candidate：RenFuping導(dǎo)師：陳五嶺教授Supervisor：ProfChenWuling西北大學(xué)生命科學(xué)學(xué)院，西安710069CollegeoflifeScien

2、ce，NorthwestUniversityxi’an710069June2007ResearchandApplicationofCompoundMicrobialAdditivesontheWholecropCornSilageAbstractTheexperimentwasconductedwiththewholecropcornmakesu陀璐ingAspergillusnigeUVllrTrichodermaviridePets

3、exFt，BacillussubtilisLactobacilludelbrueckiiandSaccharomycescerevidiaeasmicrobialadditivesonthewholecropcomsilageurea蠲auxiliarymaterialsThisstudyevaluatedtheeffectsofmicrobialadditive013thesensoryqualityfermentationprodu

4、cts，microbialchanges，andtheproductivityoftheCOWrespectivelyusingthemethodsofsensoryevaluationchemicalcompositionmicrobiologytechniquesandCOWfeedtestsTheresultsshowedthatthebestproportionoffivecultureWaS1：1：2：2：2，therecru

5、itmentWaS020％，therecruitmentofumWaS050％thefermentationtimewas30daysComparedwiththecontrapositivegroup，drymatterincreasedby1196‰伽dproteinincreasedby1529％decreasedtheneuCaIdetergentfiberandaciddetergentfiberby1381％and1267％

6、respectivelypHwas370AfterfermentationthesensoryofsilageWaSbestUnderthesaidconditionscarriedthrough500tfermentationexperimentThefermentationtimeWaS50daysTheresultofexperimentcomparewithcontrapositivesilagepit，thesensoryqu

7、alityimprovealotdrymatterinereasedby1168％crudeproteinincreasedby1506％。decreasedneutraldetergentfiberandaciddetergentfiberby1348％and1234％respectivelypHWas367，1ac讎acidincreased965％，aceticaciddecreasedby396％Onthemicrobialas

8、pectthenumberoflacticacidbacterialenhancedthenumberofmoldandyeastWaS$amewiththecontrapositivesilagepitbothofthemcouldnotbedetectedTheresultWasaccordingwithsaidexperimentTheeffectsofcompoundmicrobialadditives011thewholecr