Immunocontraception and increased longevity in equids

Abstract 10.1002/zoo.20109.abs Intensive population management by means of fertility control has been shown to change the age profile of a wild horse herd. The primary change has been an increase in the number and percent of older animals, as expected, but also the appearance of new and older age classes. An examination of direct effects […]

Immunocontraception of captive exotic species

Abstract 10.1002/zoo.20060.abs The biological efficacy of porcine zona pellucida (PZP) immunocontraception and the timing of booster inoculations were determined in 24 species of ungulates and five species of non-ungulates across 10 years of treatment and for which no technical problems were identified. The collective contraceptive efficacy for 265 ungulates, 25 bears, and 11 sea lions, […]

Immunocontraception of captive exotic species. I. Przewalski’s horses (Equus przewalskii) and banteng (Bos javanicus)

Abstract 10.1002/zoo.1430140503.abs A contraceptive vaccine made of porcine zonae pellucidae (PZP) was tested in three Przewalski’s mares and five banteng cows. The vaccine antigen consisted of the complete family of glycoproteins of the porcine zona pellucida, including the sperm receptor ZP3. All mares and three of five banteng were inoculated with 2 or 3 i.m. […]

Behavioral effects of an immunocontraceptive vaccine on eastern fox squirrels

Managing pest species in urban and suburban areas is challenging, and contraception may provide a socially acceptable and effective management option for many species. The immunocontraceptive vaccine, GonaCon, effectively inhibits reproduction in many species of wildlife, but the behavioral effects are not yet well understood. Contraceptive-induced changes in behavior could raise animal welfare concerns and […]