水蘇糖對(duì)肉雞生長(zhǎng)性能、腸道生理及免疫功能的影響.pdf

1、中國(guó)農(nóng)業(yè)大學(xué)博士學(xué)位論文水蘇糖對(duì)肉雞生長(zhǎng)性能、腸道生理及免疫功能的影響姓名：易中華申請(qǐng)學(xué)位級(jí)別：博士專(zhuān)業(yè)：動(dòng)物營(yíng)養(yǎng)與飼料科學(xué)指導(dǎo)教師：計(jì)成王曉霞20060601Theeffectsofstachyoseongrowthperformance，intestinalphysiologyandimmunefunctioninbroilersfedwithstachyosepreparationrSre)addedtoanoligosaccha

2、ridelowbasaldietofcomsoyproteinconcentrates(tomSPC)atvariouslevelswerestudiedasfollows：1Toinvestigatetheeffectsofstachyoseongrowthperformance，digestivemorphology，nutrientavailabilityandfeedpassagerateinbroilers，birdswere

3、fedwithSTP(DP，837％)addedtoarloligosaechadde—lowbasaldietofcomSPCatthedosageof0，050％，100％and200％，respectivelyTheresultsindicatedthatdietarysupplementationof050％STPpromotedgrowthperformanceofbroilerswhereas200％STPhadanegat

4、iveeffectsuggestingthereexistsdosedependentlyrelationshipbetweendietarystachyoseandgrowthperformanceMoreovertheeffectsofaddedSTPonthegrowthperformanceinbroilersatthesturterstageweremofesusceptiblethanthoseatthegrowerstag

5、eSupplementalS訐increasedabsoluteandrelativeweightofdigestiveorganinbroilerstovariousextents，especiallyforthecaecumandthecolonrectum，andtheinclusionofO50％STPhadapositiveeffectoilmucosalmorphologyoft_hejejIm啪andtheileumAsa

6、whole，dietarystachyosesignificantlyaffectedavailabilitiesofcalcium，phosphorus，NDFandADFbuthadminoreffectsonDM，oM，GE，CPandAAApparentavailabilityofnutrientincreasedwhenSTPwassupplementedatthelevelof050％anddecreasedatt11ele

7、velof200％DietarystachyoseincreasedpassagerateoffeedthroughdigestivetractwithincreasinglevelsofSTPand100％or200％STPdecreased12hrpassagetimetoempty80％90％feedintakeTheincreasedfeedpassagerateinducedbydietarystachyosemaybeone

8、ofthemainfactorswhichaffectednutrientavailability2Serialexperimentswereconductedtoinvestigatetheeffectsofstachyoseontheintestinalmicrofloraandmetabolites，immuneorganindex，intestinalmucosalconcentrationsofimmunoglobulinan

9、dbloodbiochemicalparametersinbroilersfedwithsTP(DP’855％)addedtoanoligosaccharide—lowbasaldietofcorn—SPCatthelevelsof0，O50％，100％and200％respectivelyTheresultsindicatedthatthececalmicroecosystemwasoptimizedtomaximumextentfo

10、rbirdsfeddietssupplementedwith100％STP，whichsignificantly儼005)stimulatedtheprolificationofcaeca／BifidobacteriumandLactobacillusandinhibitedthegrowthofECo／／andSalmonellaCanealconcentrationofaceticacidandtotalSCFAwassignifi

11、cantlyfP鋤05)increasedduetosupplementationofSTPTheinclusionof200％STPresultedinthehighestvahlasforI8doldbroilersand1，00％STPfor36一d—oldbirdsMoreoversupplementationofSTPatthelevelsof100％or200％significantlyfPO05)increasedthem

12、olarpercentageofbutyrateinthecaecumof18doldbroilersWithincreasinglevelsofdietarystachyose，ilealandcaeealpHvaluetendedtodecreasedandadditionof100％S丁PreachedthelowestvalueTheinclusionof050％S什effectivelydecreasedtheconcentr

13、ationofintestinalvolatilebasicnitrogen，suggestingbeneficialeffectsofoptimaldosageofSTPininhibitingthegrowthofintestinalputrefactivebacteria，especiallyforbirdsatthestarterstageF0rtheimmunefunctioninclusionofSTPincreasedth