Horse Identification Microchips
From 2007-2009, Penn State Equine Identification Project collected information about the advantages and disadvantages of the USDA National Animal Identification System (NAIS), now called the Animal Disease Traceability program.
The Animal Disease Traceability program includes a database of livestock animals - including horses - in the United States. Its purpose is to help producers and animal health officials respond quickly and effectively to animal health events. Participation is voluntary. However, under a proposed USDA rule, livestock moved interstate would have to be officially identified and accompanied by an interstate certificate of veterinary inspection or other documentation.