With calves weaned, veterinarians criss-cross the country conducting pregnancy checks, or preg checking, cow herds. The vet calls out and marks an “O” on the hips of “open” or non-pregnant cows.

It’s time to get out your Red Book gestation table and recheck your calving dates. Then match calving time with the amount ...

“Reproduction is incredibly important because we rely on getting a calf every 12 to 13 months from our dairy cows,” said Mark van der List, DVM, Boehringer Ingelheim. “We not only want our cows to ...

In experiments on mice, even at concentrations 100 times higher than milk from pregnant cows, blood hormone levels and reproductive organs were unaffected by dietary estrogens, report investigators in ...