March 27th, 2012
The Humane Society of the United States (HSUS) recently announced the EPA registration of the first contraceptive vaccine for wild horses.
In addition to OvoControl® for birds from Innolytics and Gonacon for white-tail deer from USDA/APHIS, ZonaStat-H from HSUS represents yet another new contraceptive technology, this time for the safe and effective management of wild horses and burros.
Developed in collaboration with Dr. Jay F. Kirkpatrick, Director of the Science and Conservation Center in Billings, MT, ZonaStat is based on PZP, a protein which when injected, produces antigens that bind the sperm receptor sites and render the animal infertile.
The National Park Service started using PZP to manage the wild pony population at Assateague Island in 1994. Since then, the product has been used successfully in a wide range of large mammals.
For more details see the HSUS press release describing the development and registration of ZonaStat-H.
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