Intestinal Closure in Small Ruminants Intestinal closure is a natural process in newborn lambs and kids where the intestinal lining transitions from being highly permeable to selectively absorbing nutrients. This temporary permeability is vital for absorbing antibodies from colostrum, as small ruminants do not receive maternal antibodies via the placenta. Timing and Process Golden Hours: The ability to absorb antibodies peaks within the first 6–12 hours after birth. By 24 hours, the intestine be