文档介绍：EntericDiseasesofYoungPigs 仔猪肠道疾病作者:LarryFirkins,DVM,MS,MBACollegeofVeterinaryMedicineUniversityofIllinois美国伊利诺斯大兽医学院Diarrhearemainsoneoftheleadingcausesofneonatalmortalityinswine下痢一直是新生仔猪死亡的主要原因DefinitionofDiarrhea ,muchofthefluidisabsorbedinthesmallintestinebeforeitexitstheileum通常,大部分水都在进入回肠之间就在小肠中被吸收了Colonservestoconservewaterandelectrolytes结肠只起吸收水和电解质的作用MechanismsofDiarrhea下痢的机理SecretoryDiarrhea分泌性下痢Resultoftheeffectofenterotoxinssecretedbybacteriaandsomeviruses细菌和其它病毒分泌的肠毒素造成的结果Alterationinsecretionofelectrolytes,water,andbicarbonate:gradientpullswaterintolumen电解质、水和碳酸氢钠的分泌发生改变:使水进入肠腔Absorptioncontinues:ChyleinlymphaticsMechanismsofDiarrhea下痢的机理MalabsorptiveDiarrhea吸收不良性下痢Reductioninsurfaceareaofintestine “diedduringthenight”不要从夜间死亡的猪采集病料