Researchers at the University of Minnesota now have a better idea of the appropriate holding time to use when pasteurizing colostrum.

Their research had previously shown that 140 F is the ideal temperature to use when pasteurizing colostrum in a batch pasteurizer. But, until recently, the researchers had not identified how long to hold the colostrum at this temperature.

Lab results show that pasteurizing colostrum at 140 F for 60 minutes achieves acceptable pathogen kill, says Sandra Godden, veterinarian at the University of Minnesota. This time and temperature combination also helps prevent the loss of colostral antibodies and increases in viscosity -— two common problems associated with pasteurizing colostrum.

The researchers are now trying to find out if this time and temperature combination also works on farm.