If we swallow, then immediately begins the digestion. Flying the same mice all otherwise. Here is what writes briefly, K. Zharova in the article "Some peculiarities of digestion at bats", which in 1984 was published in the Zoological journal. After a night of hunting, when the bats are sleeping, lowering body temperature, the enzymes in their stomach are inactive, although it was full of food, the intestines are empty, the acidity is such that hydrolysis of the protein can not go. Conclusion the research is the following: when deep day dream at insectivorous animals digestion is delayed by five hours.
Approximately the same is the case with the secretion of milk.