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University of Florida researchers A study performed by University of Florida researchers could aid in the management of feral cat populations.
The researchers found that a single dose of the immunocontraceptive vaccine GonaCon controls fertility over multiple years in adult female cats.
Non-profit veterinary research organization Morris Animal Foundation funded the five-year study, which was published online in August in the scientific journal Theriogenology.
The UF researchers administered single dose vaccinations to 15 female cats and placebos to another five cats. The cats were then allowed access to a breeding male cat. All five placebo females became pregnant within seven to 28 days.