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时间:2020-06-03
《包膜丁酸钠对肉鸭肠道黏膜形态和消化酶活性的影响.pdf》由会员上传分享,免费在线阅读,更多相关内容在应用文档-天天文库。
1、浙江农业学报ActaAgricuhuraeZhejiangensis,2014,26(3):570—575http://www.zjnyxb.cn贾凤,刘燕,韦强,等.包膜丁酸钠对肉鸭肠道黏膜形态和消化酶活性的影响[J].浙江农业学报,2014,26(3):570—575.DOI:10.3969/j.issn.1004—1524.2014.03.06包膜丁酸钠对肉鸭肠道黏膜形态和消化酶活性的影响贾凤,刘燕,韦强,肖琛闻,季权安,李科,鲍国连,(浙江师范大学,浙江金华321004;浙江省农业科学院畜牧兽医研究所,浙江杭州310021)摘要:以
2、北京鸭为对象,研究了包膜丁酸钠对肠道黏膜形态和消化酶活性的影响。选用1日龄北京鸭240只,分别饲喂:基础日粮;基础13粮+500g·t包膜丁酸钠;基础日粮+1000g·t包膜丁酸钠;基础日粮+40g·t杆菌肽锌。分别在鸭21日龄和42日龄,每个重复分别取2只鸭的十二指肠、空肠和回肠制作石蜡切片,测量绒毛长度和隐窝深度,计算绒隐比(V/C),并对各组肉鸭十二指肠内容物中的消化酶活性进行测定。结果表明:与对照组和抗生素组相比,添加包膜丁酸钠对肉鸭十二指肠绒毛长度和隐窝深度改善效果明显,1000g·t包膜丁酸钠添加组显著增加了空肠的绒毛长度、降低
3、了隐窝深度(P<0.05),1000g·t包膜丁酸钠添加组对肠道黏膜形态的改善作用优于500g·t添加组。同时包膜丁酸钠显著提高了十二指肠中脂肪酶的活性(P<0.05)。日粮中添加包膜丁酸钠能有效改善肉鸭肠道黏膜的形态,提高脂肪酶活性,促进肉鸭肠道健康。关键词:包膜丁酸钠;肉鸭;肠道黏膜形态;消化酶活性中图分类号:S816.79,S834文献标志码:A文章编号:1004—1524(2014)03-0570-06Efectofcoatedsodiumbutyrateonintestinalmucosamorphologyanddigestiv
4、eenzymeactivitiesinmeatduckJIAFeng一,LIUYan。,WEIQiang,XIAOChen—wen,jIQuan—an,LIKe一,BAOGuo.1ian,(ZhejiangNormalUniversity,Jinhua321004,China;InstituteofAnimalHusbandryandVeterinarianSciences,ZhejiangAcademyofAgriculturalSciences,Hangzhou310021,China)Abstract:Theeffectofcoate
5、dsodiumbutyrate(CSB)onintestinalmucosamorphologyanddigestiveenzymeactivitiesinBeijingduckwereevaluatedinthisstudy.Twohundredandfortyone·day—oldBeijingduckswererandomlydividedintofourgroupswithfourreplicates.Thedietarytreatmentswereasfollows:basaldiet,basal+500g·t~CSB,basal
6、+1000g·t一‘CSBandbasal+40g·t~zincbacitracin.Ontheday21andday42,twoducksofeachreplicatewereselectedandvillouslengthsandcryptdepthsofduodenum,jejunumandileumweremeasured,basedonwhichV/Cratiowerecalculated.Meanwhile,digestiveenzymeactivitiesintheduodenumcontentsweremeasured.It
7、showedthatadditionofCSBcouldobviouslyimprovethevillouslen~handcryptdepthofduodenalcomparedwithcontrolandantibioticgroup;additionof1000g·tCSBcouldincreasetheheightofjejunalvillousanddecreasethedepthofcryptsignificantly(P<0.05),theintestinalmucosamorphologyof1000g·tgroupwasb
8、etterthanthatof500g·t~group.Atthesametime,CSBcouldimproveactivityoflipaseintheduodenum(P<
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