快速氨化、微貯玉米秸稈對綿羊瘤胃發(fā)酵及生長性能的影響.pdf

1、國內(nèi)圖書分類號$82I5田際圖書分類號學位論文密級：少?。疞快速氨化、微貯玉米秸稈對綿羊瘤胃發(fā)酵及生長性能的影響張滿昌導師姓名：李杰(研究員)申請學位級別：農(nóng)學碩士專業(yè)名稱：動物營養(yǎng)與飼料科學論文提交日期：2005年4月答辯日期：2005年6月所在單位：東北農(nóng)業(yè)大學動物科學技術學院授予學位單位：東北農(nóng)業(yè)大學學位授予日期：2005年6月答辯委員會主席：卞克明(研究員)2005年6月10日，一一。。，。一。。，一，。逖壟鑾壹罌。圭鯊鎏耋。

2、：。，一，，，一—。，一，，，EffectofMaizeStalkTreatedbyCombinationofUreaandLimeorMicrotreatmentonlumenfermentationcharacteristicsandgrowthperlerrnanceinsheepAbstractTwelvemaleadultsemifineWOOlshee口withpermanentIumencannulaswereusadin

3、acompletelyrandomizeddesigntodetermineeffectofleymuschinensis，untreatedmaizestalk，maizestalktreatedbymieiotreatmentandcombationofureaandlimeoncharacteristicsofrumenfermentiondegradabilityofDMandNDFinrumen，nutrientdigesti

4、bilityintakeandintakespeedintrialonetotrialfourSheepwereradomlydividedintofourgroupswith3sheeppergroupThepurposeoftrial5wastodeteminetheinfluenceofdifferentroughagesongrowthperfermanceoflambInthistrialfi衄growingcrossbree

5、d(TexelXlocalbreed)lambswithaverageliveweightof27士085kgwererandomlydividedintofivegroupswith10sheeppergroupTrialITheconcentrationofvolatilefattyacidsandNH3N。cellulaseactiviVYandpHvalueofruminalfluidweremeasuredat0，2，4，6a

6、ndShafterfeedingTheresultsshowedthatthechangeofpHvaluew笛similarandhadnosignificantdifference(P0os)atthe$alnetimepointsamongfourgroupsThepeakvalueofNH3Nconcentrationappearedat2hafterfeedingStalktreamdbycombinationofureaan

7、dlimeimprovedNH3_Nconcentrationfrom1240mg／100mlto3501mg／100ml，whichincreasedby184％，andhadsignificantdifference(pO05)amongfourgroups，thepeakvalueofaceticconcentrationdidn’tappearatthesametime。thepeakvalueofleymuschinansis

8、appearedat2hafterfeeding，whilethepeakvalueofmicrotreatmentandcombinationofu／eaandlimeappearedat4hthecontrolat6hCellulaseactivityofleymaschineasis，microtreatmentandcombinationofureaandlimeadvancedin1038％，1285％and696％thanc

9、ontrol，respectivelyTheincreasementextentofmicrotreatmentgroupWasthemost，butthereWaSnotsignificantdifference(p》O，05)withcontr01Tnal2ThedegradabilitiesofDMandNDFinrumenweremeasuredbynylonbagsTheresultsindicatedthatthedegra

10、dabilitiesofDMandNDFincreasedgraduallyDegradabilivyofDMhadsignificantdifference(p005)betweengroupofleymuschinensisandcontrolatalltimepoints，andgroupofcombinationofureaandlimehadsignificantdifference(pO05)comparedwithcont

11、rolinDMdegradabilityat12h，24h，48h，and72h，whilethedifferenceappearedat72hbetweengroupofmicro—treatmanandcontr01bIDFdegradabilityofleymuschinensisimprovedbyt435％，3234％’and2730％at24h，48h，and72hthMthatofcontrol，respectivelyM