Dry Cow Therapy (DCT) refers to the administration of antimicrobial treatment to dairy cows during the dry period, typically within the final weeks of the lactation cycle. During this phase, cows are not producing milk, allowing their mammary glands to rest and rejuvenate in preparation for the next lactation cycle.

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Dry Cow Therapy (DCT) is used at dry-off to help treat existing subclinical infections and prevent new infections from occurring. It can be used in conjunction with teat-sealants to help provide three main benefits​

1. Helping to treat subclinical infections

   • The long activity period of DCT is our best weapon for trying to treat subclinical mastitis. This helps reduce the number of recurring mastitis cases and reduces cell count for the following season.

2. Reduce mastitis during the dry period

   • During the dry period, when cows cease milk production, their udders undergo significant physiological changes. DCT plays a crucial role during this phase by protecting the udder while the cow naturally develops a keratin teat plug. This protective barrier minimises the risk of bacterial invasion, thereby reducing the incidence of mastitis during the dry period.

3. Reducing mastitis at calving

   • The transition from the dry period to lactation presents a critical juncture where cows are particularly vulnerable to mastitis. Long-acting DCT or the use of teat-sealants provides a protective shield against mastitis at calving. By maintaining the integrity of the udder and preventing bacterial entry, DCT helps ensure a smooth transition into the lactation phase, minimising the risk of mastitis-related complications.