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时间:2020-05-02
《低聚木糖对断奶仔猪肠道pH和肠黏膜形态结构的影响.pdf》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、2014年第5期黄永洁:低聚木糖对断奶仔猪肠道pH和肠黏膜形态结构的影响23低聚木糖对断奶仔猪肠道pH和肠黏膜形态结构的影响黄永洁(辽宁水利职业学院生物工程系,辽宁沈阳110122)摘要:本试验通过在日粮中添加低聚木糖探讨其对早期断奶仔猪肠道结构功能的影响。试验选用72头35日龄、体重9.81±0.41kg杜X长×大三元杂交仔猪,随机分配成4组,每组3个重复,每个重复6头仔猪,公母各半。第1组为对照组,饲喂玉米一豆粕基础日粮;其余3组分别在各组日粮中添加0.01%、0.02%、0.04%低聚木糖作为试验组。试验预饲期2d,正试期为28d。于试验的最后1d从各重复中随机选取
2、1头仔猪屠宰,并测定胃、十二指肠、空肠、回肠、盲肠和结肠内容物的pH及十二指肠、空肠和回肠黏膜上皮的绒毛高度和隐窝深度。试验结果显示,试验组猪的胃及各肠段的pH比对照组均有所降低,尤其是0.02%低聚木糖组,差异显著(P<0.05);试验组各肠段的绒毛高度均高于对照组,差异显著(P<0.05),隐窝深度低于对照组,但差异不显著(P>0.05),绒毛高度与隐窝深度之比显著高于对照组(P<0.05)。本试验结果表明,在早期断奶仔猪的日粮中添加低聚木糖,能降低胃肠道内容物的pH,改善早期断奶仔猪肠道的形态结构,以0.02%低聚木糖组效果最为明显。关键词:低聚木糖;断奶仔猪;肠黏
3、膜;pH;形态结构中图分类号:$816文献标识码:B文章编号:1672—9692(2014)05—0023—05EfectsofxyIO—OligOsaCcharIdeSonintestinalpHandintestinalmucosalmorphologicalstructureofweanedpigletsHuangYongjie(Liaoningwaterconservancyvocationalcollege,Departmentofbiologicalengineering,LiaoningShenyang1l0l22)Abstract:Thepresentst
4、udywasconductedtodeterminetheeffectsofXylo—oligosaccharidessup—plementationinweanlingpigletsdietsonperformanceandblood—serumbiochemicalindicators.Ato—talof72crossbredpiglets(Duroc×Landrace×Largewhite)weanedat35dayswithinitialbodyweightedof9.81±0.41kgwererandomlydividedinto4groups.eachgrou
5、pcontained3replica—tions,eachreplicationhas6weanlingpiglets.Thecorn—soybeantypedietwasusedascontrolgroup.Thedietsforthesegroupswereaddedwith0.01%、0.02%and0.04%X0Stocorn—soybeandiets,respectively.Preliminaryfeedingperiodis2d,experimentalperiodiS28d.Attheendofthe1.d,onepigletrandomlyfromthe
6、repeatedtreatmentwerekilledanddeterminedpH,vi1lusheightandcryptdepthofthestomach,duodenum,jejunum,i1eum,cecumandcoloncontents.TestresultsshowthattheexperimentalgroupofpigstomachandtheintestineofpHwere1owerthanthatofthecontrolgroup,especiallylow0.02%xylosegroupwithsignificantdifference(P<0
7、.05):vi1lusheightintheintestineweresignificantlyhigherthanthatinthecontrolgroup(PO.05)werefound,theratioofvillusheighttocryptdepthissignificantlyhigherthancontrolgroup(P
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