Here, we’d like to provide some information about where to place the EID/RFID tag in the ear.
Most EID tag programs recommend placement in the Left ear according to the following guidelines. (see image below)
For Cattle –
- Place the EID tag in the middle of the ear between the two cartilage ribs close to the head – usually about 1 1/2 to 2 inches from the head.
- Place the female portion of the tag on the inside of the ear and the male portion of the tag on the back of the ear. Note that his is a thicker part of the ear.
For Swine –
- Place the EID tag in the thicker or middle part of the ear.
- Place the female or EID portion of the tag on the inside of the ear. The male portion of the tag should be placed on the outside of the ear. Tag retention is improved when the male tag lays flush against the back side of the ear.
For Sheep –
- Place the EID tag in between the cartilage ribs of the ear, near the first quarter of the ear (closer to the head).
- The female portion of the tag should be placed on the inside of the ear and the male portion should be placed on the back side of the ear.
Tag Retention Tips for both Visual and EID/RFID Ear Tags –
- Always make a NEW hole
- Make a precise incision – Not a puncture wound
- Attach the tag Toward the head (female button/tag on the inside of the ear, male button/tag on the back of the ear)
- Avoid penetrating cartilage and blood vessels
- Always clean equipment to avoid disease transfer – some folks keep a disinfectant dip handy to dip the jaw of the tagger into between taggings
- Always use New tags
- Avoid using heavy tags
- Support the ear of newborns when tagging
- Remove twine from hay bales to minimize snagging
- Visual ID tags should be placed approximately 1 1/2″ Further from the head than EID/RFID eartags. (approximately 3″ from head on mature cattle)
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