Meri gay ke kide lag gaye hai

It looks like worm infestation. Give clean water, keep the cow on dry fodder, and do not let her graze on very wet or dirty pasture for now. If she is weak, has loose dung, dull coat, or has lost condition, she needs deworming soon. For an adult dairy cow, deworming is usually done based on body weight and condition, so the exact medicine and dose should be chosen by a vet. Keep the shed clean, remove dung daily, and deworm all animals in the herd on the same schedule so reinfection does not keep happening. If she is pregnant, very weak, or not eating well, get her checked before giving anything. Consult a veterinarian before administering any medicine or treatment.