An animal born in the same herd and within one year of the Canadian cow that was recently confirmed to have BSE was sent in February 2002 to the U.S. for slaughter, a U.S. official said Friday, according to a Dow Jones report.

Ron DeHaven, administrator of the USDA's Animal and Plant Health Inspection Service, said, "USDA, in collaboration with FDA, is currently tracing the disposition of this animal and will provide further details as the investigation evolves."

The Canadian Food Inspection Agency, or CFIA, said earlier Friday that it is investigating 141 "birth cohorts," or cattle born in the same herd and within one year of the BSE-infected cow, many of which were likely slaughtered.

Both DeHaven and Paul Mayers, a food safety specialist with Health Canada, said Friday that it is rare to find more than one BSE case in the same herd.

"Nevertheless, as was the case in May 2003, when Canada had its first case of BSE and a small number of birth cohorts were traced to the U.S., USDA will make every reasonable effort to obtain and provide information about the disposition of this animal as well as any other birth cohorts that are traced to the U.S. through Canada's epidemiological investigation," he said.