Before tattooing, you should determine the ID configuration you’d like to use in your herd. There are many ways to organize your herd ID. If you are a member of a breed association or other organization, you should consider any rules and requirements that they may have. Many producers use tattoo ID solely for their recordkeeping, as it allows a permanent method of identification. Some producers incorporate the International Letter Code System into their tattoo ID program. In this system, each year corresponds to a specific letter. The letter Y represents 2011, Z represents 2012 and A represents 2013. In this system, a calf born in 2012 would have the letter Z incorporated into its tattoo. The International Letter Code System has become popular worldwide.
In one example, a calf born Feb 18, 2012 may have the tattoo 218Z. In another example, a calf may be tattooed with Z005, because it was the 5th calf born in the year 2012. The main thing is to choose a system that fits your needs, is easy to incorporate, and makes recordkeeping more efficient.
International Letter Code:
U 2008
W 2009
X 2010
Y 2011
Z 2012
A 2013
B 2014
C 2015
D 2016
E 2017
F 2018
G 2019
H 2020
The international system does not use letters I, O, V or Q.
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