By Dave Bedard, Alberta Farmer Express
A heifer whose tissues tested positive for bovine tuberculosis (TB) at slaughter in the U.S. has been traced back to a Saskatchewan cattle herd which has now turned up two more cases of the disease.
The Canadian Food Inspection Agency, in a report dated Wednesday, said it was notified Feb. 23 by the U.S. Department of Agriculture that tissues from an animal at slaughter had a positive PCR (polymerase chain reaction) test for bovine TB.
The animal in question had been in a U.S. feedlot since last September, when it was exported from Saskatchewan, CFIA said. Before export, it had spent five months in a Canadian feedlot, where all other contact animals were also destined for slaughter and none were moved to other farms.
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