Its obvious ranchers are once again dictating policy.
The Bison Disease: Brucellosis
The reason that thousands of bison have been systematically slaughtered in the Yellowstone area over the past decade can be summed up in one word: Brucellosis.
Brucellosis is a contagious disease in domestic livestock which causes stillbirths. The disease was originally transmitted to wildlife by cattle, and now is found in wild elk and buffalo of the Greater Yellowstone Area. These buffalo are being slaughtered under the guise of eliminating exposure to the disease by domestic cattle.
Brucellosis is transmitted by exposure to birth materials or by ingesting infected milk. Although there is a very small chance that buffalo bulls could transmit the bacteria to female cattle during mating, the Greater Yellowstone Interagency Brucellosis Committee stated, "...transmission from buffalo to cattle is almost certainly confined to contamination by a birth event by adult females." Therefore, non-pregnant females, calves and male buffalo pose virtually no risk of disease transmission. Yet the state of Montana kills all bulls wandering outside of Yellowstone and even shoots calves.
Human beings historically have contracted brucellosis (undulant fever) by ingesting non-pasteurized milk or careless handling of infected carcasses. Meat from infected animals can be safely eaten as long as the meat is adequately cooked. The Centers for Disease Control no longer consider brucellosis a reportable human disease. The chances of humans contracting undulant fever are extremely remote.
As for livestock, there has never been a verified case of transmission of brucellosis from a free-ranging buffalo to range cattle. In 1989, 810 cattle from 18 different herds where Yellowstone buffalo ranged were tested twice for brucellosis infection. No cattle tested positive.
The Animal-Plant Health Inspection Service (APHIS), an agency of the U.S. Department of Agriculture, is charged with controlling agricultural diseases. Under APHIS's rules, if a domestic animal tests positive for exposure, the entire herd is killed. More than 3,000 (1,000 during the 1996-97 winter alone) buffalo have been killed in the Greater Yellowstone Area since 1984 for the perceived benefit of brucellosis control, despite the availability of a vaccine for cattle.
The National Wildlife Federation and the InterTribal Bison Cooperative prepared a plan to protects against the remote threats of brucellosis while ensuring the long term viability of our nation's last remaining herd of wild buffalo. The seven points of the plan are:
Establish a buffalo health certification center: Yellowstone buffalo that wander onto private lands surrounding the Park could be captured and quarantined. Negative-testing animals should then be made available for reintroduction to tribal lands.
Scientifically manage the Yellowstone area's buffalo: The agencies involved should set a population goal for the Yellowstone herd, taking into account wintering populations outside the Park. If the herd grows beyond the goal, strategic methods of herd management should be implemented outside Yellowstone.
Acquire additional winter ranges and key migration routes: To allow buffalo to migrate safely beyond Park boundaries, public/private partnership easement purchases should be made, creating a buffalo migration corridor.
Adjust cattle grazing patterns on public lands: Cattle grazing on public lands should be postponed until buffalo have calved or returned to Yellowstone or after buffalo have migrated to areas where cattle grazing is prohibited.
Vaccinate cattle consistently and routinely: A mandatory cattle vaccination program should be implemented within a "Brucellosis Management Area surrounding Yellowstone, thus greatly reducing the already negligible threat to livestock.
Develop a vaccination program inside Yellowstone: Using a vaccine delivery system that minimizes disturbance to wildlife, a brucellosis vaccination program for buffalo inside the Park should be implemented once a vaccine that is proven safe and effective for wildlife is developed.
Evaluate winter management of Yellowstone's roads: It should be determined whether Yellowstone winter road management practice encourage and assist buffalo migration. If so, viable alternatives to the current policy of plowing or packing snow-covered roads should be put into effect.
http://www.nwf.org/wildlife/bison/humaninteraction.cfm?photo=6