Question:  query regarding  a cow  showing the signs of hardening of teat  at the time of milking 
Answer:  told him to apply mastilep over the udder including the teat , apply some amount of mastered oil over the teat at the time of milking  , complete milking should be practised , since it is 1 st lactation / may be mastitis -- in such case - infuse  mammitel  as directed & give a course of an antibiotic