BOZEMAN, Mont. American Prairie Announced via press release that once again no evidence of clinical disease was found in its bison herd. In January, an adjustment board appointed by the state Department of Natural Resources and Conservation approved a new bison grazing and disease management agreement between American Prairie and the Phillips County Conservation District. The agreement gives American Prairie a 10-year variance from the Phillips County bison grazing ordinance. Under the agreement, American Prairie is expanding its already-robust disease management program to test more animals, as well as sharing herd information more frequently with the Conservation District. âThis bison management agreement is the hard-won result of constructive talks with American Prairie, the Phillips County Conservation District, and livestock industry representatives,â said Alison Fox, CEO of American Prairie. âWe are dedicated to continuing to build stronger relationships with these parties through the terms of the agreement, which is why we shared these test results without delay.â