I want to buy 5 gir COW for my farm each month for next 12 months. I want to verify each cow provides 12+ Ltr milk every day

For a Gir cow, twelve plus liters every day is a high target, so buy only after strict checking. First, milk the cow in your presence and see the actual yield. Then do a CMT test on all four quarters. Ask which month of lactation she is in, because month two to three is peak and month seven to eight can fall sharply. Avoid cows above seven years, and check body condition, last calving date, and vaccination record. For consistent twelve plus liters, do not rely on one cow alone; you need very strong animals and usually staggered calvings. For any cow above fifty thousand rupees, take a Pashumitra or vet with you before payment. Treating this carefully saves you from a bad purchase and future milk loss.