Question:  query regarding a lactating cow  showing decrease in milk yield 
Answer:  told him  to inject  pepsid  10 ml -1.5 ml i/ m ly daily for 3 days[ for the calf ]    /  for the lactating cow  --told him to give orally boiled  papaya & smooth gourd -1-1.5 kg , minervet 1 kg -20 gm orally daily , ostocalcium & vimeral 80-100 ml orally daily