Two more herds have been released from tuberculosis quarantine, bringing the total released to 25 and leaving 48 under quarantine.
There are about 9.500 cattle on those 48 premises.
The number of animals slaughtered has increased to 10,500, all of them owned by one operation with cattle on 18 sites in Alberta.
A cow at that operation tested positive for TB in September at a United States packing plant.
The Canadian Food Inspection Agency then found six more infected animals on that operation.
The TB strain had not been seen in Canada before, but is similar to one in Mexico.