* seven days.
   It was necessary for the mother's health that the young one
   should suck so long; and prior to this time, the process of
   nutrition in a young animal can scarcely be considered as
   completely formed.  Besides this, it may justly be asserted,
   that the flesh of very young animals is comparatively
   innutritive.  There is something brutish in eating the young
   of beast or fowl, before the hair and hoofs are perfect in
   the one, and feathers and claws in the other; and before this
   period, their flesh is not good for food, consequently they
   were not fit for sacrifice, which is termed the bread or food
   of God, (ver. 25.)

  25  12:2,3  19:23,24  Ex 22:30