铁离子Lactoferrin:bindsIron干扰素:防御病毒GammaInterferon:viraldefense松弛素:促进生殖发育Relaxin:Reproductivedevelopment(Bagnelletal.,2006)催乳素:可能会影响饲料转化率和未来的产奶量Prolactin:Potentiallyaffectsfeedefficiencyandfuturemilkproduction初乳对新生犊牛的作用?ROLEOFCOLOSTRUMINNEWBORNCALVES初乳:不仅只有免疫球蛋白?COLOSTRUM;MORETHANIMMUNOGLOBULINS初乳:不仅只有免疫球蛋白?COLOSTRUM;MORETHANIMMUNOGLOBULINS初乳代乳粉胎次Parity挤奶Milking季节Season品种Breed第一次挤的初乳?ProductionatFirstMilking什么影响了初乳质量??WHATAFFECTSCOLOSTRUMQUALITY?初乳的收集:?COLOSTRUMCOLLECTION:何时?WHEN将犊牛从母畜身边转移,并尽快对新产牛进行挤奶!RemoveCalffromDamandMilkFreshCowasSoonasPossible!用碘酊消毒脐带,擦干犊牛!inctureandDryCalf.尽快饲喂干净、无病原体且富含IgG的初乳FeedaClean,Pathogen-FreeandHighIgGCOLOSTRUMASAP!延迟收集初乳对奶牛初乳内免疫球蛋白含量的影响?EFFECTOFDELAYEDCOLOSTRUMCOLLECTION?ONCOLOSTRUMIGGCONCENTRATIONINDAIRYCOWS延迟收集初乳对荷斯坦奶牛的初乳内免疫球蛋白含量(对照组的%)的影响(作者Mooreet.al2005)。