The Canadian Cattlemen's Association

Branding - a single hot iron brand, if applied properly, is an acceptable means of permanent identification in Canada. However, excessive branding at processing (defined as more than one single or multi-character brand applied to more than one site at one time) is discouraged. Due to the extremely low incidence of multiple brandings at the feedlot level this concern is not considered an issue.
Earmarking & Dewlaps - although some feeder cattle may arrive at the feedlot with visible earmarks and dewlaps or wattles the practice of physical markings of this nature is discouraged.

Elastic banders (properly applied) are the tool of choice for castration of calves over 3 months of age. Consult a veterinarian and follow the feedlot protocol.
Heifer abortion programs must be monitored closely by the feedlot veterinarian.
Mid or late-term fetuses must be terminated or euthanized according to the Company Euthansia Policy developed with input from the feedlot veterinarian.
The feedlot must have a protocol in place for appropriately dealing with full term feedlot calves born of feeder heifers in the confines of the feedlot.
Full term feedlot calves cannot be sold through a public auction if they are under 8 days of age

The feedlot must develop a Company Animal Health Policy with input from the feedlot veterinarian.
Personnel must be aware and acquainted with the Company Animal Health Policy.
Sick or injured cattle must be identified and pulled for treatment in a timely fashion.
Animals that do not respond to treatment as per the Company Animal Health Policy or are suffering from a disease or condition that is considered untreatable by the feedlot management or veterinarian must be euthanized or, if possible, emergency slaughtered.
The decision to euthanize must be made without hesitation in order to avoid unnecessary suffering of the sick or injured animal.