Trustee Ruth de Reus said it was the first year the trust had held the adoption day, which had previously been run in conjunction with a vet.
''By doing that [running it through a vet] we don't have as much control.
''By having it ourselves we can give out the information about their history and eating.
''This was our second one for the season ... but it worked and two a year would be more than adequate,'' Ms de Reus said.
About 90% of the kittens adopted out had been reported by residents or neighbours as strays on a property, she said.
If the mother was a stray, the trust uplifted and attempted to socialise it with a view to eventually rehoming the cat.
If it couldn't be tamed, the cat was desexed and rereleased, she said.
''We ran a desexing campaign in September-October - that's definitely made a big difference.
''We had 59 cats in Cromwell [that were desexed] ... As a result of that, there are very few kittens in Cromwell now.''
The remainder of the kittens and cats received by the trust came from people who wanted to ''relinquish'' their pet after realising ''it's not as easy as they'd thought''.
