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Goat IDs

Goat ID Numbers


For genetic evaluations, animal identification (ID) is recorded with a 2-character breed code, a 3-character country code, and a 12-character national ID.

Example:   AIUSA000000908505

Most goats with records in the national dairy database have IDs provided by the American Dairy Goat Association (ADGA), which assigns a 9-character ID that is expanded to 12 characters by adding zeroes to the left of the ADGA ID. Historically, those IDs had included registry status as a prefix to a 7-character ID number (for example, a prefix of 18 identified an animal as part of a grading-up program). In 2005, ADGA stopped including a prefix in the ID and began submitting that information in the registry status field. The prefix was also removed from some historical records if it was not required for uniqueness. The G prefix for grade animals fills position 7 from the right; thus, for IDs over 999999, the millions place is in position 8 from the right.

ADGA Registry Status ID Interpretation of ADGA ID Examples National ID Alias1
00####### Purebred 000123456 000000123456
18####### American 180123457 000000123457
19####### British 190123458 000000123458
00G###### Grade animals with an ID of 999999 or below 00G012345 000000012345
0#G###### Grade animals with an ID above 999999 01G234567 000001234567

1 Registry status may be excluded in some ID ranges (see ranges defined below) when not required for uniqueness.

In addition to ADGA IDs, national IDs can be an eartag ID assigned through the Dairy Herd Information program, an American Goat Society ID, or an American ID. For eartag IDs, AAA and ZZZ are the positions of the alphabetic characters. In ID ranges where the registry prefix is required for uniqueness, XXX represents 000, 180, 190, or 00G and YYY represents 001, 181, 191, or 01G as described above.

National ID Ranges Interpretation Unique across breed
Beginning Ending
000 ##AAA# ###
000 ##ZZZ# ###
Eartag ID Yes
000 000 000 001
000 YYY 145 283
ADGA ID1  
  000 XXX 000 001
  000 XXX 010 562
   ADGA ID No
  000 000 010 563
  000 000 521 999
   ADGA ID Yes
  000 XXX 522 000
  000 XXX 593 199
   ADGA ID No
  000 000 593 200
  000 001 142 873
   ADGA ID Yes
  000 YYY 142 874
  000 YYY 174 466
   ADGA ID No
  000 001 174 467
  000 049 999 999
   ADGA ID Yes2
000 050 000 000
000 199 999 999
American ID Yes
000 200 000 000
000 200 099 999
American Goat Society ID3 No
000 200 100 000
000 300 001 000
American ID Yes

1 ID created with '18' or '19' registry status overlap with possible American ID that are not part of any assigned (available) range.
2 ID 000 001 319 046 is not unique across breeds.
3 American Goat Society IDs overlap with American IDs assigned to Cattle Fax; however, Cattle Fax should not be assigning goat IDs.