Bovine TB Found In Two US Dairy Herds

[Guest guest]

Bovine TB Found In Two

US Dairy Herds

From Patricia Doyle, PhD

dr_p_doyle

6-13-3

 

 

Again, we need to secure our borders, especially with Mexico, to

guarantee that cattle are not being shipped with Bovine TB from

Mexico where Bovine TB is prevalent.

Patricia

A ProMed Posting

Date Fri, 13 Jun 2003 From A-Lan Banks Source AP via Miami Herald, 12

Jun 2003 [edited]

Bovine Tuberculosis Found In 2 Dairy Herds

Tuberculosis has been found in 2 dairy herds in Roosevelt County, New

Mexico Cattle Growers Association president Phil Bidegain said. The

detection of bovine tuberculosis means the state will be reclassified

from its tuberculosis free status under the U.S. Department of

Agriculture's tuberculosis rule developed in 2000.

" While this reclassification will have virtually no impact on

consumers of beef and milk in New Mexico or elsewhere, it will have

tremendous impact on livestock producers in the state, " Bidegain, of

Tucumcari, said. " New Mexico is the 4th state to fall under the

federal tuberculosis rule. It has already been detected in Michigan,

Texas and California, " Bidegain said.

The drop in status will require beef and dairy cattle owners

transporting cattle out of New Mexico to test for tuberculosis.

Ranchers would have to give each animal an injection [tuberculine

test] and put them in a chute to read the test 3 days later. All

infected animals in a herd must be killed.

A lack of large animal veterinarians in the state could also make

testing difficult, Bidegain said.

Under the USDA tuberculosis rule, the state must now develop a plan

on how it will regain its tuberculosis free status.

Texas ranchers have said more restrictions should be placed on

Mexican herds entering the United States after the discovery of

tuberculosis in dairy cows in Pecos County and beef cattle in Fayette

County last year [2002]. Although the government required all breeder

herds in Texas to be tested, it waived the requirement for feeder

cattle. Ranchers in Texas have said the best way to wipe out the

disease is by controlling high-risk animals, including dairy herds

and cattle from Mexico and other places where bovine tuberculosis is

prevalent.

Bidegain said the state may opt to regionalize, which means only

livestock in a designated region must be tested. The rest of the

state would be allowed to move cattle under the current system. But

he warns that the plan development and approval period could take up

to 2 years.

-- ProMED-mail <promed

[bovine tuberculosis is a chronic bacterial disease caused by the

acid-fast, slow-growing rod-shaped _Mycobacterium bovis_;

transmission to humans constitutes a public health problem.

Aerosol exposure to _M. bovis_ is considered to be the most frequent

route of infection of cattle, but infection by ingestion of

contaminated material also occurs. Characteristic tuberculous lesions

occur most frequently in the lungs and the retropharyngeal, bronchial

and mediastinal lymph nodes. Lesions can also be found in the

mesenteric lymph nodes, liver, spleen, on serous membranes, and in

other organs. - Mod.AS]

Patricia A. Doyle, PhD Please visit my " Emerging Diseases " message

board at: http://www.clickitnews.com/ubbthreads/postlist.php?

Cat= & Board=emergingdiseases Zhan le Devlesa tai sastimasa Go with God

and in Good Health

 

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