The objective of this study was to evaluate the effectiveness of electronic
and visual ear tags in animal traceability, and to investigate the effect of
placement site on ear-tag retention in Akkaraman lambs under rural
conditions. A total of 380 lambs were identified with electronic and visual
ear tags. Electronic and visual ear tags displayed 98.9 and 98.7 %
readability at the end of 7 months, and 98.0 and 98.0 %
readability at the end of the first year after tagging, respectively.
Regarding the placement site, it was observed that there was more loss in
ear tags placed on the mid-point part of the ear than the first-quarter part from the head side, but the difference was not
statistically significant (P > 0.05). Breakages and electronic
failures were not recorded during this study. In conclusion, electronic and
visual ear tags demonstrated similar on-farm efficiency for the
identification of Akkaraman lambs and fulfilled the minimum efficiency of
98 % required by the International Committee for Animal Recording (ICAR) for an official animal identification device at the
end of the first year after tagging. Based on the findings of the study,
placement of the ear tag in a cranial position and near the base of the ear
would be advised
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