NEW ORLEANS (AP) — Animal rights advocates want a federal court to make an Army base in western Louisiana stop rounding up hundreds of feral horses on land it owns or uses. Fort Polk began escalating efforts in November, and some captured horses are treated poorly and many may be slaughtered, the Pegasus Equine Guardian Association said in court papers backing up its request for a preliminary injunction. People and groups that might adopt the horses, "are being arbitrarily rejected and removed from the potential adopter list, increasing the likelihood that 'kill buyers' will be able to acquire the horses," the association wrote.