Scientists: Cloned bull could boost beef safety

Associated Press

COLLEGE STATION, Texas — Scientists at Texas A&ampM University unveiled a disease-resistant black Angus bull Monday, a feat they said could lead to safer beef and more efficient ranching worldwide.

"The potential for spreading the genetically based resistance to disease, I think, is exceptional," said Richard Adams, the College of Veterinary Medicine dean.

The month-old calf, called Bull 86 Squared, was cloned from genetic material frozen 15 years ago from Bull 86. That animal, which died of old age in 1997, was naturally resistant to brucellosis, tuberculosis and salmonellosis — all of which can be passed on to humans through uncooked beef, unpasteurized milk or contamination.

The new animal carries the same traits. More of its genes will be tested for resistance to other diseases over the next few years.

"What they’ve done is identify an animal that appears to have resistance to these diseases, and all they’re doing is making another animal that’s genetically identical to it," said Steven Kappes, an animal germ plasma and reproduction expert with the Agriculture Department’s research service. "So they’re not making the animal safer to eat.

"What they’re doing is just making more of something that is good," he said. "That is a key: to identify animals that are genetically superior in certain traits and this allows us to make more of them."

The genetically engineered calf is 10 to 100 times more resistant to the diseases than a normal animal, said Garry Adams, associate dean for research and graduate studies.

"But what is important is that if they are also vaccinated, they will then become super resistant," he said — between 100 and 1,000 times more resistant.

Copyright ©2000 Associated Press. All rights reserved. This material may not be published, broadcast, rewritten, or redistributed.

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