The first milk produced by a cow or other mammal after giving birth, which is thick, nutrient-rich, and sometimes called colostrum.
From Old English 'beesting' or 'bysting,' related to 'beast.' The word predates modern biology terminology, reflecting agricultural societies' intimate knowledge of animal reproduction and the special properties of first milk.
Biestings is packed with antibodies and proteins that newborn animals desperately need—it's essentially nature's liquid vaccine, which is why farmers have long recognized it as fundamentally different from regular milk.
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