This nursing bottle drencher is specific to provide colostrum or milk to the calf. At birth, a calf is without immunity. The only protection is colostrum. From the 6th day after birth, it starts to synthesize antibodies and acquired immunity appears 3 to 5 weeks after birth. Necessary additional protection is provided by the mother through the colostrum to make the transition. The calf is entirely dependent on the antibodies provided by colostrum. Colostrum, naturally rich in antibodies and antibacterial proteins, actively participates in the digestion of the young calf. This bottle will allow you to feed the calf 4 liters of colostrum at once, it is essential to the young calf to ensure good immunity.