Calves can't fight. What's going on?

Three-month-old calf, lying on the ice for a night, in the morning the cow can not stand, cold limbs, two hind limbs no reflex, put in a warm place, appetite is normal, 4 minutes 5 days, what is the reason, how to treat, is calcium deficiency related? Do you have a desire to think of it? Acupuncture of traditional Chinese medicine, Baihui acupoint, Shenyu acupoint, Dacheng acupoint and Xiaoqua acupoint can be considered. But the possibility of standing up is very small, you might as well give it a try.