Ancestor calculations 8 Generations:The pedigree analysis is based on the information in the database and is only accurate to that extent. Incomplete generations (where there are unknown ancestors) are shown in red. The only way to get a more exact COI is to add the missing dogs. If there are too many dogs missing, the COI can show 0.000%.
These calculations are very complex, so the page might take longer to load than other pages.
Ancestor loss, maximum ancestors, actual ancestors
The maximum number of possible ancestors in a pedigree is 2^(number of generations+1)-2. The ancestor loss is calculated by comparing the number of possible ancestors in a pedigree with the actual number of different ancestors.
e.g. a four-generation pedigree contains 30 dogs and if a particular pedigree consists of 30 unique dogs then this pedigree has no ancestor loss at all; but in a pedigree with some inbreeding there might only be 26 unique dogs in these four generations meaning an ancestor loss of 13.3%.
Percentage of Blood
The percentage of blood estimates how much an individual ancestor contributes to the pedigree. Sire and dam each make up 50% of a pedigree; grandsires and granddams 25%; great-grandparents contribute 12.5%, etc.
Every time a nominated ancestor appears in the pedigree, the percentage values are added together and their percentage of blood can be estimated.
Eg A dog that appears in the grandparent generation contributes with 25%, and if it also appears in the great-grandparent generation (12.5%) then it has a percentage of blood of 37.5% (25 + 12.5).
Calculations for: Finnie Smits van 't Reuseldal
Coefficient of Inbreeding (COI): 7.168%
|Analysis Summary||# of dogs||Gen 1||Gen 2||Gen 3||Gen 4||Gen 5||Gen 6||Gen 7||Gen 8|
|Ancestors in 8 generations||216||2||4||7||14||27||44||74||106|
|Max. ancestor count||510||2||4||8||16||32||64||128||256|
|Ancestor loss %||57.6%|