For swine, what is considered the universal identification system?

Ear notching is considered the universal identification system for swine because it is a method that has been widely used across different regions and practices for many years. This system allows for permanent identification, which is essential for tracking breeding, health records, and lineage. The process involves physically notching or cutting specific patterns into the ear of the pig, with each notch representing a different number or letter according to established guidelines.

This method is particularly advantageous in swine production due to its simplicity, low cost, and the fact that it can be read easily by farm personnel without the need for additional tools. The consistency and ease of use of ear notching make it the standard identification method within the swine industry. Its established practices and regulatory acceptance further solidify its position as the universal identification system.

Other methods, such as ear tagging, microchipping, and branding, can be used for identification but are not recognized as universally accepted across the swine industry. They may have limitations regarding permanence, application, or acceptance in breeding programs, which is why ear notching remains the preferred and recognized choice.