Risk of infection during the dry period

Mastitis pathogens

The majority of clinical mastitis cases soon after calving are due to infections acquired during the dry period, more specifically during the transition phase. The risk is not evenly distributed during the dry period. The bovine mammary gland becomes more susceptible to new infections at both the beginning and end of the dry period.


Phases of the dry period

Dry cow, mastitis

The dry period is a crucial period of rest for the udder. Its ultimate objective is to optimise milk production in the next period of lactation.

The role of antibiotic dry cow therapy (aDCT)

Cannula insertion

Antibiotic dry cow therapy (aDCT) has a dual purpose:

  • Curing the existing subclinical infection at dry off
  • Preventing new infections before calving

The use of dry cow therapy has been a cornerstone of the 5-point plan for mastitis management for more than 30 years and has resulted in a decrease of contagious mastitis pathogens in many well-managed herds.

Download the Apps!

Milk Withdrawal Period Calculator

App that calculates the time of withdrawal of milk from a cow that has been treated with the product during the drying time. The calculator takes into account the exact moment the drying began until delivery. It calculates the time remaining to eliminate milked milk from birth and so respect the product legal withdrawal time (according to the product’s technical specifications sheet).


Mastitis treatment in dairy cows mainly relies on the use of antibiotics. Now, however, a new approach offers farmers significant benefits and important cost savings. Calculate how much you can save now! Try this app!