COIs (Coeffient of Inbreeding) of Golden Retrievers.

Details on the COI can be found at The Canine Diversity Project
This factor has been calculated for a large number of Golden Retrievers. This information can
be found on K9data.
This study deals with a subset of that data.
12% of Goldens with major AKC titles have missing entries in their pedigrees that preclude the
calculation of 10 generation COIs.

The last update was Feburary 2010.
These links break these data
down into groups based on major
AKC and GRCA titles.

COIs for CH Goldens

COIs for UD Goldens

COIs for UDX Goldens

COIs for OTCH Goldens

COIs for RE Goldens

COIs for RAE Goldens

COIs for TDX Goldens

COIs for VST Goldens

COIs for CT Goldens

COIs for MH Goldens

COIs for All-Age Goldens

COIs for AFC Goldens
The following plots  COI versus lifespan.
The following histogram illustrates the data distribution in COI's.
The following chart shows that MACHs have the lowest COIs on average while SDHF Goldens have the largest.




COIs for FC Goldens

COIs for AX Goldens

COIs for MX Goldens

COIs for MACH Goldens

COIs for OD Goldens

COIs for OS Goldens

COIs for ADHF Goldens

COIs for DDHF Goldens

COIs for FDHF Goldens

COIs for ODHF Goldens

COIs for SDHF Goldens

COIs for VCX Goldens
COIs for OFA Excellent Goldens
COIs for OFA Fair Goldens
K9Data lists the top 5 ancestors contributing to COI for each pedigree

Here is the ancestor which is the top ancestor most often for various title groups.
Note: The average % contrtibution for the CH title group need to be calculated.
Title
 Top Ancestor
 % as Top Ancestor
 Average % Contribution
FC
 Speedwell Pluto
 41%
 2.6%
TDX
 Misty Morn's Sunset
 19%
 1.8%
MH
 Holway Barty
 33%
 3.9%
OTCH
 Holway Barty
 10%
 3.0%
RE
 Misty Morn's Sunset
 30%
 1.5%
MACH
 Misty Morn's Sunset
 19%
 1.3%
CH
 Misty Morn's Sunset
 21%