Question:  query regarding acow showing the signs of allophagia / pica 
Answer:  give minerax mixture /ira mix - 1 kg - @ 10 gm daily with feed , inject tonophosphen  10 ml -- 3 ml  intra mascularly for 3 days , deworm the cow with suitable anthalmintic after 10 days [inject ivermection  or pancur bolus 2.5 gm orally in empty stomach ]