Abomasal curd formation of colostrum and gamma globlin(IgG) absorption in the newborn calves.

反刍动物的被动免疫保护是通过摄入和吸收足量的初侧免疫球蛋白来实现的。本研究的目的是测定初乳皱胃凝乳的形成以及皱胃凝乳的形成对新生犊牛γ -球蛋白（IgG）吸收的影响。本研究结果表明：(1)初乳在皱胃中凝结成凝乳；(2)与胃管喂养相比，乳头喂养凝乳形成更好，血清IgG浓度更高。本研究为初乳喂养犊牛皱肠形成提供了新的证据，并为促进新生犊牛皱肠形成和被动免疫转移提供了有效的方法。

Passive immune protection in ruminants is achieved by the ingestion and absorption of adequate amounts of colostral immunoglobulins. The objective of this study was to determine the abomasal curd formation of colostrum and the effect of abomasal curd formation on gamma globlin(IgG) absorption in the newborn calves. The results of this study showed that (1) the colostrum coagulate into the curd in the abomasum and (2) nipple feeding showed better curd formation and higher serum IgG concentration compare to stomach tube feeding. We could provide new evidence of abomasal curd formation in colostrum-fed calves and an effective method for facilitating abomasal curd formation and transfer of passive immunity in new-born calves in this study.