1. Headline
  1. Headline
By
updated 5/18/2012 3:28:19 PM ET 2012-05-18T19:28:19

Officials have lifted quarantines on two Central California dairies linked to a case of mad cow disease, after investigators found the illness didn't come from cattle feed.

  1. More from TODAY.com
    1. Man holding floating dog in viral photo adopts rescue puppy

      When Wisconsin man John Unger endured the death of Schoep, his beloved dog of 20 years, he wasn't sure he would emotionall...

    2. They're real: Taco Bell tests new Cap'n Crunch Delight doughnut holes
    3. #TheDress wasn't the first to divide us: 11 dress controversies
    4. Celebrating Leonard Nimoy: 5 lessons we learned from Spock
    5. At Home with TODAY: Wrangler welcomes you to his home turf

Tests performed by the World Organization for Animal Health confirmed what U.S. labs had found: The diseased cow had a form of the illness involving a spontaneous mutation of a protein gene that hasn't caused illness in humans.

The cases of mad cow reported across Great Britain in the 1990s were caused by cattle being fed protein supplements made from the spinal columns and brains of diseased cows. That practice has since been banned.

The case in Tulare County was discovered through random testing.

Officials have not released the names of the affected dairies, which had been shuttered since April 24.

Copyright 2012 The Associated Press. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.

Discuss:

Discussion comments

,

Most active discussions

  1. votes comments
  2. votes comments
  3. votes comments
  4. votes comments

More on TODAY.com

  1. Cbs Photo Archive / Getty Images Contributor

    Leonard Nimoy dies at 83: 5 lessons we learned from Spock

    2/27/2015 6:46:55 PM +00:00 2015-02-27T18:46:55
  1. Scott Gries / Getty Images

    #TheDress wasn't the first to divide us: 11 dress controversies

    2/27/2015 9:40:48 PM +00:00 2015-02-27T21:40:48
  1. Andrew H. Walker / Getty Images

    Dave Coulier recalls old days: 'Supermodels were bouncing off' Stamos

    2/27/2015 6:12:49 PM +00:00 2015-02-27T18:12:49
  1. David Giesbrecht / Netflix

    'House of Cards' designer spills secrets of Claire's killer wardrobe

    2/27/2015 10:27:22 PM +00:00 2015-02-27T22:27:22
  1. Gene Blevins / Reuters

    Celebrities and scientists remember Leonard Nimoy

    2/27/2015 6:32:08 PM +00:00 2015-02-27T18:32:08