Which identification method is the most common for swine?

Ear notching is the most common identification method for swine primarily due to its effectiveness, practicality, and established familiarity within the industry. This method involves cutting notches into the ear in a specific pattern that designates unique identification numbers or information for each animal.

Ear notching is advantageous as it provides a permanent way to identify an animal that cannot be removed or lost, while also ensuring quick visibility for record-keeping and management purposes. The patterns of notches are standardized, allowing for easy interpretation by those familiar with swine management.

While collars, tags, and microchips are used in certain situations, they each have limitations. Collars can be detrimental as they might cause injury or be lost. Tags, although somewhat common, can be removed or fall off over time. Microchips, while viable for identification, are less frequently used in swine primarily due to the additional costs and the need for scanning equipment. Therefore, ear notching remains the preferred and most prevalent identification method in swine production and management.