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Food Company Pilots UHF RFID to Enhance Pig Life History

Tönnies Livestock's RFID technology is tracking the life cycles of about 100,000 pigs from birth to slaughter, to identify their health and treatments as they are born, fattened and butchered, thereby creating a health identification for each animal and providing analytics for farmers so they can adjust their methods.
By Claire Swedberg

First, button-style UHF tags are applied to one ear of each of approximately 1,000 piglets when they are several days old. Each tag is encoded with a unique ID number linked to a specific piglet's identification data, in order to create that animal’s pig ID card. The created data is then stored and analyzed in the IQ-Agrar software. A handheld reader interrogates the tag ID from a distance of up to 2 meters (6.6 feet), after which the IQ-Agrar software captures the ID number and links it to the pig ID card. Each time a pig is weighed, fed or treated with medication, a worker reads its ear tag using a handheld, which forwards that data to the hosted server via a Wi-Fi connection.

When pigs are ready for transport to the slaughterhouse, they are loaded onto trucks. Tönnies installed a fixed RFID reader and antenna at the loading area, so that each pig's unique ID is automatically captured as the animal passes within 2 meters of the reader. The tag is again read when the animal is slaughtered, thereby creating a complete life cycle for that pig, explains Robert Elmerhaus, Tönnies Livestock's managing director.

"The individual data of a slaughtered pig gets read by an antenna at the point of slaughtering," Elmerhaus says, "at which time it gets combined with the consecutive slaughter number and the RFID tag [ID]." That data is stored with a picture of the slaughtered animal for health-diagnostic purposes.

Once the pig is slaughtered, says Heiner Strömer, another Tönnies Livestock managing director, that information is accessible by producers and other stakeholders. This enables them to analyze and adjust their own production processes, such as the amount of feed or medications used.

To date, Strömer reports, the pilot has determined that RFID technology can make the collection of pig data more efficient than manual methods. "First of all," he states, "we have a valid identification of each individual pig, which includes all breed and life-cycle data." The subsequent analysis of the data allows for adjustments, he adds, such as genetics, feed-conversion ratios, details about medications administered and the results thereof.

The pilot has not been without challenges, Elmerhaus says. Pigs can be rough on tags, and the environment poses its own drawbacks related to weather, temperatures and dirt. "Keep in mind that during raising, transport and slaughtering, there could be rough edges here and there," he explains, "as well as a wider range of temperatures, which can destroy either the ear tag or its readability." This is also one reason why UHF RFID technology was the choice, Elmerhaus adds, since it offered a more durable means of storing an ID number than bar codes or high-frequency (HF) RFID.

If the system proves to work well, Strömer says, Tönnies Livestock hopes to launch permanent deployments and share the technology with breeders and farmers along the supply chain to slaughterhouses. In the meantime, he says, "We need to gain wide acceptance of the UHF RFID ear tag and the system coming with it." First, Tönnies plans to bring in new partners within the pig food chain, such as boar farms, sow owners, and piglet and pork fattening farms.

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