What is RFID Ear Tag

An ear tag is a plastic or metal object used for identification of domestic livestock and other animals. If the ear tag contains an RFID module conforming to ISO 11784 & 11785, then it is called an Electronic Ear Tag.

An ear tag usually carries an individual identification number or code for the animal, or for its herd or flock. This identification number (ID) may be assigned by some national organisations (usually in the form of Property Identification Code, or PIC), or they may be handwritten for the convenience of the farmer ("management tags"). The National Livestock Identification System (NLIS) of Australia regulations require that all cattle be fitted with a RFID device in the form of an ear tag or rumen bolus before movement from the property and that the movement be reported to the NLIS. However, if animals are tagged for internal purposes in a herd or farm, IDs need not be unique in larger scales. The NLIS now also requires sheep and goats to use an ear tag that has the Property Identification Code inscribed on it. These ear tags and boluses are complemented by transport documents supplied by vendors that are used for identification and tracking. A similar system is used for cattle in the European Union, each bovine animal having a passport document and tag in each ear carrying the same number. Sheep and goats in the EU have one or two tags carying the official number of their flock (however, individual numbers are to be introduced from the end of 2009).

An ear tag can be applied with an ear tag applicator (also called pliers), however there are also specially-designed tags that can be applied by hand. Depending on the purpose of the tagging, an animal may be tagged on one ear or both. If there exists a national animal identification programme in a country, animals may be tagged on both ears for the sake of increased security and effectiveness, or as a legal requirement. If animals are tagged for internal purposes, usually one ear is tagged. Australian sheep and goats are required to have visually readable ear tags printed with a Property Identification Code (PIC). They are complemented by movement documents supplied by consignors that are used for identification and tracking.

Very small ear tags are available for laboratory animals such as mice and rats. They are usually sold with a device that pierces the animal's ear and installs the tag at the same time. Lab animals can also be identified by other methods such as ear punching or notching (also used for livestock; see below), implanted RFID tags (mice are too small to wear an ear tag containing an RFID chip), and dye.

How to Implant Animals Microchip

A microchip implant for animals is an identifying integrated circuit placed under the skin of a dog, cat, or other animal. The chips are about the size of a large grain of rice and are based on a passive RFID technology..

Tattooing is another, older method for identifying animals.

Uses and benefits

Microchips have been particularly useful in the return of lost pets. They can also assist where the ownership of an animal is in dispute.

Animal shelters and animal control centers benefit from microchipping by more quickly and efficiently returning pets to their owners. When a pet can be quickly matched to its owner, the shelter avoids the expense of housing, feeding, providing medical care, and outplacing or destroying the pet. Microchipping is becoming increasingly standard at shelters: many require all outplaced animals to receive a microchip, and provide the service as part of the adoption package.

In addition to shelters and veterinarians, microchips are used by kennels, breeders, brokers, trainers, registries, rescue groups, humane societies, clinics, farms, stables, animal clubs and associations, researchers and pet stores. Animal control officers are also trained and equipped to scan animals.

System of recovery

Effective pet identification and recovery depends on the following:

• A pet owner either adopts a pet at a shelter that microchips some or all adoptee animals, or the owner with an existing pet brings it to a veterinarian (or a shelter) that provides the service.
  
• The shelter or vet selects a microchip from their stock, makes a note of that chip's unique ID, and then inserts the chip into the animal.
  
• Before sending the animal home, the vet or shelter performs a test scan on the animal. This helps ensure that the chip will be picked up by a scanner, and that its unique identifying number will be read correctly.
  
• An enrollment form is completed with the chip number, the pet owner's contact information, the name and description of the pet, the shelter's and/or veterinarian's contact information, and an alternate emergency contact designated by the pet owner. (Some shelters or vets, however, choose to designate themselves as the primary contact, and take the responsibility of contacting the owner directly. This allows them to be kept informed about possible problems with the animals they place.) The form is then sent to the manufacturer of the chip to be entered into its database. This company typically provides not only the microchips, but a 24-hour, toll-free telephone service for pet recovery, good for the life of the pet.
  
• The pet owner is also provided the chip ID and the contact information of the recovery service. This is often in the form of a collar tag imprinted with the chip ID and the recovery service's toll-free number, to be worn by the animal.
  
• If the pet is lost or stolen, and is found by local authorities or taken to a shelter, it is scanned during intake to see if a chip exists. If one is detected, authorities call the recovery service and provide them the ID number, the pet's description, and the location of the animal. If the pet is wearing the collar tag, anyone who finds the pet can call the toll-free number, making it unnecessary to involve the authorities. (The owner can also preemptively notify the recovery service directly if a pet disappears. This is useful if the pet is stolen, and is taken to a vet who scans it and checks with the recovery service.)
  
• The recovery service notifies the owner that the pet has been found, and where to go to recover the animal.

Many veterinarians perform test scans on microchipped animals every time the animal is brought in for care. This ensures the chip still performs properly. Vets sometimes use the chip ID as the pet's ID in their databases, and print this number on all outgoing paperwork associated with its services, such as receipts, test results, vaccination certifications, and descriptions of medical or surgical procedures

Components of a microchip
Microchips are passive, or inert, RFID devices and contain no internal power source. They are designed so that they do not act until acted upon.

Three basic elements comprise most microchips: A silicon chip (integrated circuit); a core of ferrite wrapped in copper wire; and a small capacitor. The silicon chip contains the identification number, plus electronic circuits to relay that information to the scanner. The ferrite -- or iron -- core acts as a radio antenna, ready to receive a signal from the scanner. The capacitor acts as a tuner, forming a LC circuit with the antenna coil.

These components are encased in special biocompatible glass made from soda lime, and hermetically sealed to prevent any moisture or fluid entering the unit. Animals are not affected physically or behaviorally by the presence of a chip in their bodies.

Implant location
In dogs and cats, chips are usually inserted below the skin at the back of the neck, between the shoulder blades on the dorsal midline. The chip can often be manually detected by the owner by gently feeling the skin in that area. It stays in place as thin layers of connective tissue form around the biocompatible glass which encases it.

Horses are microchipped on the left side of the neck, half the distance between the poll and withers, and approximately one inch below the midline of the mane, into the nuchal ligament.

Birds' microchips are injected into their breast muscles. Because proper restraint is necessary, the operation requires two people -- an avian veterinarian and a trained assistant.