I would like to purchase high yield cow

For dairy purchase, look at Sahiwal, Gir, HF cross, or Jersey cross. Before paying, milk the cow in your presence, do a CMT test on all four quarters, ask which month of lactation she is in, and check age and body condition. If you want fifteen litres or more consistently, one cow is not enough; take two cows with staggered calvings. For any cow above fifty thousand rupees, bring a Pashumitra or vet before payment.