How to calculate the percentage of
genetic influence in your horse’s pedigree.
Each parent provides 50% of the genetic make-up to a foal.
The following charts give you the percentage of genetic material coming from each horse in that generation. An old “saying” indicates that a horse must carry at least 18% of a certain individual in the pedigree to see any potential real physical or mental influence from that ancestor.
When a common ancestor appears, you add together each percentage level to determine the total overall influence. [Shown in charts 2 and 3]
Chart 1 – percentages of genetic influence from each generation: for example: this horse “YOR High Noon” is 25% High Sign, 50% SW Red Velvet.
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100% |
50% |
25% |
12.5% |
6.25% |
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YOR HIGH NOON* Multiple Nat’l & Open Champion |
HIGH SIGN NUGGET Multiple World & Open Champion |
HIGH SIGN* Multiple World & Open Champion |
HIGH TIME World Champion |
HIGH SPOT* |
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DALLAS KS |
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LITTLE NAZ |
RED DOGS COWBOY |
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NAZY |
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HEN PENNY |
TOP STUFFS BIG MO* |
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FLICKA LADY BYRD |
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SW RED VELVET* Canadian Supreme Hall of Fame, all
time leading dam of Working Cowhorses (all
breeds) |
WAYALTA RED APACHE |
RED EYE APACHE B* |
APACHE II* |
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WYATTA GAMBLER KATE |
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KATE BALDY BAR |
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TOBOYO BWANA |
MOONSHINE MARTINI |
MOONSHINE G |
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DJECHERI |
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MISS CHINOOK |
COPPER FLAG |
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Chart
2 below – multiple common ancestors:
add together each common ancestor to get the total genetic influence
coming from that horse. Each common ancestor shown is color coded.
Examples: The paternal great grandfather is also the maternal great-great grandfather “High Sign”. Add together 12.5% and 6.25% = 18.75% influence of “High Sign” in this horse YOR Fine Line.
The paternal grand dam “SW Red Velvet” is also the maternal great grand dam. Add together 25% and 12.5% = 37.5% influence of “SW Red Velvet” in this horse.
The sire YOR High Noon is also the maternal grand sire. Add together 50% and 25% = 75% influence of YOR High Noon in this horse.
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100% |
50% |
25% |
12.5% |
6.25% |
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YOR FINE LINE * ApHCC Nat’l Champion and Reserve Nat’l Champion; and multiple
Provincial Over-All Champion (all breed) |
YOR HIGH NOON* Multiple Nat’l & Open Champion |
HIGH SIGN NUGGET Multiple World & Open Champion |
HIGH SIGN* Multiple World & Open Champion |
HIGH TIME World Champion |
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LITTLE NAZ |
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HEN PENNY |
TOP STUFFS BIG MO* |
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FLICKA LADY BYRD |
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SW RED VELVET* Canadian Supreme Hall of Fame, all
time leading dam of Working Cowhorses (all
breeds) |
WAYALTA RED APACHE |
RED EYE APACHE B* |
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WYATTA GAMBLER KATE |
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| TOBOYO BWANA |
MOONSHINE MARTINI |
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MISS CHINOOK |
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YOR NOON SPECIAL* |
YOR HIGH NOON* Multiple Nat’l & Open Champion |
HIGH SIGN NUGGET Multiple World & Open Champion |
HIGH SIGN* Multiple World & Open Champion |
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HEN PENNY |
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SW RED VELVET* Canadian Supreme Hall of Fame, all
time leading dam of Working Cowhorses (all
breeds) |
WAYALTA RED APACHE |
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| TOBOYO BWANA |
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PEPPY PAMELA* |
PEPONITA SAN TIVIO |
PEPONITA* |
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WAR LEOS LASS |
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QUARTER HORSE |
TIVIO SAN PEP |
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Chart
3 - An example of a line bred KING horse is given below:
Each time King is represented in the pedigree is highlighted in blue. Adding only the generations shown in this pedigree below we would add 12.5% two times and 3.125% three times to give a total of 34.375% King blood in this horse. (There may be additional incidences of King in further generations that are not shown in the six generation pedigree given, which would increase the percent of King in the horse.)
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