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A site that may be of interest to you
From that above link/image:
This finding does not affect the safety of Canadian beef. Tissues in which BSE is known to concentrate in infected animals are removed from all cattle slaughtered in Canada for domestic and international human consumption. No part of this animal entered the human food or animal feed systems.
Preliminary investigations conducted prior to receiving final results identified the animal’s exact date of birth and birth farm — two critical elements required to trace other animals of interest, as defined by the World Organization for Animal Health. With the confirmed positive results and this information already in hand, the Canadian Food Inspection Agency (CFIA) has immediately undertaken the animal component of its investigation on a priority basis.
The CFIA is also conducting a thorough examination of potential sources of infection. Investigators will pay particular attention to the feed to which the animal may have been exposed early in its life, when cattle are most susceptible to BSE. The CFIA is collecting records of feed purchased by and used on the animal’s birth farm. As in previous investigations, the CFIA will also fully consider all other scientific pathways in an attempt to definitively determine how the animal became infected.
This animal, a six-year-old dairy cow, developed BSE after the implementation of Canada’s feed ban.
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