How is the population controlled?
” In Virginia, population growth is controlled by the annual auction. To control the Maryland population, researchers have developed a unique non-hormone, anti-fertility vaccine that temporarily prevents pregnancy in selected mares. Instead of using hormones to prevent ovulation or fertilization, the mare’s own immune system prevents fertilization after forming a “glue” around her egg as a reaction to pig ova protein! Administered as a serum in a dart gun, the completely reversible process is unique in that it does not harm the ponies, nor does it alter their behavior in any way. The success of this revolutionary wild horse “birth control” is having a great impact in the field of mammalian wildlife and zoo management. While action may be taken to end the suffering of a gravely ill, seriously injured, or dying pony, no extraordinary measures are taken to prolong life. As with other species of Assateague wildlife, ponies that are sick or weak do not survive only healthy animals produce o
