Mammary gland gestation, serum progesterone remains at a stably high concentration so signaling through its receptor is continuously activated. As one of the transcribed genes, Wnts secreted from mammary epithelial cells act paracrinely to induce more neighboring cells' branching. When the lactiferous duct tree is almost ready, "leaves" alveoli are differentiated from luminal epithelial cells and added at the end of each branch. In late pregnancy and for the first few days after giving birth, colostrum is secreted. Milk secretion (lactation) begins a few days later due to reduction in circulating progesterone and the presence of another important hormone prolactin, which mediates
Slaughter-free milk the milk, but also by the selling of the carcass. By not killing the animal, the slaughter-free milk becomes more expensive than the regular milk, since not only the farmer does not get capital gain by selling the carcass, as he must keep infrastructure and conditions for the animal's retirement. Slaughter-free milk The slaughter-free milk is a consumable milk produced from any mammal, normally cows, wherein the farmer later on does not slaughter the animal for meat production. Unlike conventional milk or even organic milk, slaughter-free milk never involves the killing of the animal, which is the typical case in