From the archive record
As the cow licks her calf she begins the process of learning the features (smell and sight) that will help her to identify her calf and discriminate against other calves. You will notice that the newborn calf does not gain access to the udder for sometime after birth. Calves do not jump up and approach the udder prior to the cow "learning" something about the calf, such an event would be out-of-sequence. In fact, cows will rarely let a calf nurse unless they are certain that the calf belongs to them. Therefore, if you want to cross-foster an older calf onto a cow immediately after you have pulled a dead calf (the ideal time when she is most receptive) it may be beneficial to replicate the sequence of events and the conditions of a newborn calf. In other words, since birth fluids are such s