欢迎来到天天文库
浏览记录
ID:39123747
大小:1.77 MB
页数:42页
时间:2019-06-25
《富硒酵母发酵优化试验与其联合丁酸梭菌制剂对肉鸡养殖上的初步应用》由会员上传分享,免费在线阅读,更多相关内容在学术论文-天天文库。
1、万方数据Findingthebestfermentationconditionsofa-●一一一‘————selenium-enrichedSaccharomycescerevisiaeandtheaoolicationcombinedselenium--enrichedSaccharomycescerevisiaewithpreparationofClostridiumbutyricuminbroilerchickens1一"‘奎anlei(PreventiveVeterinaryMedicine)Directedby
2、prof.Pankang-chengAbstractThisstudywasaboutoptimizingthecultureconditionofaselenium.enrichedSaccharomycescerevisiae.Tofindthebestfermentationconditions,thePotatoDextroseMediumWasthefermentationmedium.SevenoptimizationoffactorsaboutthetimeofaddingSe,theconcentrati
3、onofSe,thecultivationtemperature,theliquidvolume,theinocultionquantity,thespeedoftableconcentrator,thecultivationtemperatureWasdesigned.Adding0.25mg/kgseleniuminselenium—enrichedSaccharomycescerevisiaeandO.1%preparationofClostridiumbutyricumtothebasicrationofbroi
4、lerchicken,ascertaintheeffectsofitspreparationonbroilerchicken’Sgrowthperformance,slaughterperformance,cecumfloraandjejunumflora,antioxidantactivity,theindexofill-ffnuneorgan,thedevelopmentofjejunumvillusandileumvillus.Theresultsofexperimentwereasfollows:1.Thestu
5、dyWasaboutfermentationconditionsofselenium-enrichedSaccharomycescerevisiae.thePotatoDextroseMediumisthefermentationmedium.SevenoptimizationoffactorsaboutthetimeofaddingSe,theconcentrationofSe,thecultivationtemperature,theliquidvolume,theinocultionquantity,thespee
6、doftableconcentrator,thecultivationtemperature.Bymeasuringthebacteriavolumeoftheselenium-enrichedSaccharomycescerevisiaet,theseleniumcontentionofselenium-enrichedSaccharomycescerevisiae,Thefollowingresults:theoptimalliquidvolumeWas40mlin250mlconicalflask,theoptim
7、alinocultionquantityis10%,theoptimalcultivationtemperaturewas34℃,theoptimalspeedoftableconcentratorwas200r/min,andaddingSeaftercultivating24hours,IIl万方数据theconcentrationofSewas50gg/ml,thefermentationcouldbefinishedin36hours.Thebiomass(dryweight)reached5.679/L,the
8、Unitofseleniumwas6511.225499/gandtotalSecontentofthecellsWas36904.17299/L.2.150one-day-oldAvainbroilerchickenswererandomlydividedintofivetreatmentsin3replicati
此文档下载收益归作者所有