Alternative treatments in the absence of Delvosteron to avoid prolonged oestrus in female ferrets

Female ferrets, referred to as ‘jills’, are seasonally polyoestrous and induced ovulators. If they are not bred, surgically neutered or chemically brought out of season, persistent oestrogen production can result in bone marrow suppression, pancytopenia and even death. With news of the discontinuation of the drug Delvosteron, commonly known as the ‘jill jab’ (licensed for ferrets and used to induce ovulation), owners and veterinary professionals should be aware that there are alternative treatments available. This article will discuss the alternatives available to prevent prolonged seasons in female ferrets with the aim of helping decision-making on the appropriate treatment for individual ferret patients.