Loss - of - Ancestor - Quotient (AVK)

As the inbreed-quotient (IK) shows only the relation between 2 partner-dogs, out of a match of 2 highly inbreed dogs 
(e.g. a match of 2 littermates) which themselves come out of 2 non-related parent-dog-bloodlines, we can get an IK 
nearly 0% (because there are no common ancestors at sire's/dam's bloodline).

This simply means that a for breeding-purposes very important Information isn't shown at all.

A very simple method to overcome this problem is the counting-method of the AVK. This method doesn't replace the 
counting of IK but gives for the "all-days-breeder's needs" enough information.

when the same ancestor appear more than once in the pedigree of the dog.

If one of this 62 possible ancestors appears twice, the concerned dog has indeed only 61 different ancestors.

If 3 ancestors appear twice, this dog has indeed only 59 different ancestors.

Name of dog

No. of appearance of ancestors

Reduction

The ancestor Horrido appears twice - 
the possible 30 ancestors for Bessi have to be reducted about 1.

The AVK is counted

AVK 29/30 = 0.966

The AVK of Bessi is 96.6%

Name of dog

No. of appearance of ancestors

Reduction

This is counted as follows:

The possible 30 ancestors of Japsi have to be reduced about 9.

The AVK for Japsi ist counted

AVK 21/30 = 0.7

Japsi has solely 70% of the possible ancestors

The AVK depends on the no. of generations it is counted for.
There is normally a loss from generation to generation as the most dogs go back to the same roots/ancestors.

The example Japsi shows over 3 generations the AVK of 85.71%.

From the 14 possible ancestors 2 appear twice.

Therefore the counting is 12 : 14 = 0.8571.

Make sure, if you compare the AVK with examples of other sources, to be sure how many generations are involved.

©Source: Hundezüchtung in Theorie und Praxis von Walter Schleger u. Irene Stur,

Dog's breeding theory & practice by Walter Schleger and Irene Stur,

ISBN 3-224-1 7000-8 - Jugend u. Volk Wien