Birth
Control for Wild Mares Promising as a Solution
"For many years humans have limited
animal populations through hunting or large-scale culls." Wild horses endured wholesale kills. "But these methods are
becoming less and less ethically acceptable to the public. Scientists from UC
Davis, in California, are searching for alternative solutions, tackling the problem from the other
end of life's procession. Rather than increase death rates, why not lower birth
rates?"
"Birth control for wild mares was tested in 1992" In the first test mares had to be injected with contraceptives twice, an impractical scenario. "But after four years, a trio
of researchers perfected a time release vaccine that seems to be 95% effective
for at least one year with only one shot."
"The procedure is now being conducted
on mares that are older than 9 years. Wild mares that are older than nine years
are returned to the wild in the belief that they will not be adoptable. The new vaccine has already
been tested on 200 animals in Nevada. The results will be clear after foaling
season. The next efforts of the research will be to extend the effective length
of time for the vaccine to two or three years. "
"This solution is not without
its critics. The Commission for the Preservation of Wild Horses objected to the
fertility control project becuase results of the experiment had not been validated.
But these objection will not deter future plans of implementing the new vaccine
nor continued research in this area."