二种益生菌对军曹鱼幼鱼生长性能、免疫酶和消化酶活性、肠道菌群结构及tlr9基因表达量的影响

《二种益生菌对军曹鱼幼鱼生长性能、免疫酶和消化酶活性、肠道菌群结构及tlr9基因表达量的影响》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、50d，T1-T6groupsofhindgutdiversityofaveragebandswas15andallofthemwerenosignificantdifference，exceptT3groupthathad10bands．TO—T3had10commonstripsandband6，28，35，40arethemajorsuperiorityflorainthehindgut,whichtheproportionis36．1％，15．75％，15．27％，11．74％，respectively．Thesimilarityofintestinalmi

2、croflorainTOgroupandT1-T3groupis67％，66％，52％．T4andT6groupshad10commonbandsandband5，32，37，40arethemajorsuperioritybacteriathattheproportionis42．16％，14．97％，10．36％and10．68％respectively．ThesimilarityintestinalmicrofloraofT4groupandT5，T6groupintercomparisonis58％，46％and64％．TheexpressionofTLR9

3、geneinliverofT2groupwasnosignificantdifference、析ththecontrolgroup(尸>O．05)，butTLR9geneexpressioninliverWassignificantlyimprovedofothergroups，especiallyT4-T6groupsweresignificantlyhigherthanthatofTO—T3groups(P<0．05)，butnosignificantdifferenceamongT4一T6groups(尸>0．05)．TheexpressionofTLR9ge

4、neinkidneyofT3一T6groupsshowedsignificantlyhigherthanthatofthecontrolgroup∽0．05)，andT6groupWassignificantlyhigherthanthatofT3一T5groups(尸

5、TLR9inintestineofT1一T6groupsweresignificantlyhigherthanthecontrolgroup妒<0．05)，whileT1-T3groupswerenosignificantdifferenceeachotheraswellasT4一T6groupsU，>0．05)．Therefore，dietaryadministrationofBacillussubtilis,Lactobacillusacidophilusasseparateorcompounds(1：1)，couldpromotedthegrowthperfo

6、rmance，immuneenzymes，digestiveenzymes，improvedtheintestinalmicrofloraandincreasetheexpressionquantityofTLR9ofjuvenilecobia．Continuousfeedingisbetterthannon·continuousfeedingandthemixeddiethadthebestefjf宅ct．Keywords：Rach)7centroncanadum，probiotic，growthperformance，intestinalmicroflora,T

7、LR9VII目录摘要⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯IAbstract⋯．⋯⋯．．．⋯⋯．．．⋯．．⋯．⋯．⋯．⋯⋯⋯．．．⋯．⋯．⋯⋯⋯．．⋯．⋯⋯⋯．⋯⋯．．．⋯．．．⋯．⋯⋯．⋯．⋯．．．．．．⋯IV1前言⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯11．1军曹鱼生物学特征及养殖概况⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯．．11．1．1军曹鱼生物学特征⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯l1．1．2军曹鱼养殖概况⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯11．2益生菌及其在鱼类中的应