Bunta Go Koshiwasou
Registration n° JKC-JS-00019/22-0 · NIPPO Registered
- Breeder
- Yosuke Kobayashi
- Kennel
- Koshiwasou
- Gender
- Male
- Date of birth
- 1 March 2021
- Country of birth & standing
- Japan
- Colour
- Red
Genetic indicators
COI — inbreeding
3.13%
Low. Common ancestor: Koujinryuu Go Tosa Kuroshiosou.
AVK — distinct ancestors
53.2%
33 distinct ancestors out of 62 possible. Among known ancestors only: 80.5%.
Pedigree completeness
66.1%
21 empty slots. The AVK takes them into account, so read both figures together.
Value for the breed's diversity
Common lines — rarer than 28% of the Shiba born in the last 15 years (since 2012)
How often its ancestors (over 10 generations) appear in the pedigrees of the 10,908 recent dogs: rare lines bring new genes to the breed. Over: 6 generations 8 generations 10 generations
Common ancestors and how they connect 1
Over 5 generations: each ancestor found on both the sire's and the dam's side, and what it adds to the COI.
| Ancestor | Sire's side | Dam's side | Share of the COI |
|---|---|---|---|
| Koujinryuu Go Tosa Kuroshiosou ♂ | gen. 3 | gen. 4gen. 5 ×2 | 3.13% |
| COI over 5 generations | 3.13% | ||
How the lines connect
Only the dogs that lead to a common ancestor are drawn. Each coloured line goes from a common ancestor down to its descendants. Click a dog to open its page.
Sire's side Dam's side Coloured circles: common ancestors, same colours as in the pedigree
How these figures are calculated
COI — Wright's formula: F = Σ (½)n₁+n₂+1 × (1 + FA), summed over every path through a common ancestor A. The number of generations must be fixed for two dogs to be comparable: a more complete pedigree mechanically raises the figure.
AVK — distinct ancestors divided by the theoretical number of ancestors. Over 5 generations there are 62 possible slots. 100% means no ancestor appears twice.
Completeness — the share of slots actually filled in. The AVK is misleading without it: a half-empty pedigree shows a low AVK even with no inbreeding at all, simply because data is missing.
Pedigree
The whole tree fits on screen. Pinch to zoom in on a dog.
Tetsu No Komaryuu Go Sanuki Mizumotosou ♂JKC-NP/H29-21448
Japan
BOS at NIPPO GN 2016Koujin No Tetsu Go Sanuki Mizumotosou ♂光神の鉄号 讃岐水本荘NIPPO H25-6178Japan
2010 Nippo Grand National BISKoujinryuu Go Tosa Kuroshiosou ♂光神竜号 土佐黒潮荘NIPPO H19-12096, JS -07914/14-0JapanJapanJapan
Ryouta Go Sanuki Mizumotosou ♂亮太号 讃岐水本荘NIPPO H17-35509JapanJapanJapan
Gekkoumaru Go Sanuki Mizumotosou ♂月光丸号 讃岐水本荘JKC-NP/H26-30060JapanJapanJapanJapanOffspring and relatives
Grouped by litter, with both parents at the top of each block. Click to see the puppies of a dog.
Direct offspring 2 litters · 2 dogs
♂ Makoto go Kosiwa JpRed · born in Japan · 
lives in FrancePatella 0
♀ Mamio Go Kosiwa JpRed · born in Japan
Half-siblings, sire's side 6 litters · 6 dogs
♀ Nozomi Go Kosiwa JpRed · born in Japan ·
lives in Poland
♂ Sakura No Homare Go KoshiwasouRed · born in JapanHD BPatella 0Eyes Clear
♂ Satsukiryuu Go KoshiwasouRed · born in Japan · 
lives in NorwayHD DEyes Clear
♂ Shinnosuke Go Fuji HachimansouRed · born in Japan · lives in PolandHD APatella 0Eyes Clear
- ♀ Miyabi go Koshiwasou born & living in Japan
Added by aliciaplat. Last updated by Edyta Gajewska 3 Nov 2025.