The AAHIA registrations rules states that no more than 25% TB blood is allowed in the AQHA or APHA heritage. This is the #1 reason for elimination of registration. We would like to take this opportunity to explain how to look over the prospective heritage and know for certain the subsequent offspring is eligible for registration, and the AQHA or APHA parent is eligible for American Azteca foundation breeding stock.
Horses with AQHA appendix papers may be eligible. However, and eight generation pedigree, is required to determine the TB blood percentage.
*All pedigree's submitted must be from a legitimate registry such as AQHA or APHA. We cannot accept pedigree from non-official sources such as allbreedpedigree.com or any other non registry pedigree generator.
When viewing your AQHA or APHA pedigree you must have four generations. A generation DOES NOT include the horse's name on the registration papers. The certificate you receive from them only shows a three generation pedigree. You will need to contact AQHA or APHA for an extended pedigree.
Here is an Example
The AQHA (Dam or Sire's) Pedigree
100%
Generation #1
Horse in Question
50%
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Generation #2
Parents
25 %
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Generation #3
Grandparents
12.5 %
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Generation #4
Great Grandparents
6.25 %
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AQHA
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AQHA
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Sire
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AQHA
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AQHA
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AQHA
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AQHA
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AQHA
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AQHA
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AQHA
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AQHA
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AQHA
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AQHA
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TB
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TB
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TB
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TB
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TB
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Dam
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AQHA
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AQHA
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TB
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AQHA
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AQHA
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AQHA
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AQHA
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AQHA
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AQHA
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AQHA
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AQHA
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AQHA
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AQHA
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6.25 X 4= 25
This horse is 25% TB blood
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Place the percent of TB next to each horse in there perspective column. At the bottom of each column add up the TB blood. The Generation with the highest percentage would be total TB going back to Generation #4.
* You would do APHA registered horses in the same mannor.
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