Try checking the date on that story. It turns out the CFIA can confirm what happened to these cows, unlike the american cow.
Here's another from a few days later:
Canadian Food Inspection Agency
BSE in North America
BSE Disease Investigations in Alberta (2005)
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Two cases of BSE in Alberta were confirmed in January 2005. Neither animal entered the food or feed systems. In total, Canada's BSE surveillance program has now confirmed 3 cases of BSE in Canadian cattle. The first case (Case 1) was confirmed on May 20, 2003
Case 2 was confirmed on January 2. The investigation is complete. All test results on animals from the birth cohort of the positive cow were negative for BSE.
Case 3 was confirmed on January 11. The investigation is complete.