Inbreeding levels in an open-registry pedigreed dog breed: The Australian working kelpie.
Vet J
; 269: 105609, 2021 Mar.
Article
em En
| MEDLINE
| ID: mdl-33593498
ABSTRACT
The depletion in genetic diversity of closed-pedigree dog breeds can be a contentious topic and can lead to calls for open-registry. However, strong evidence in support of proposed open-registry solutions is lacking, with the reproductive isolation of these breeds unlikely to be the sole cause of elevated inbreeding levels. Human-induced limitations, such as popular sire effects, are unlikely to be confined to closed-registry breeds and conceivably play an important role in maintaining genetic diversity within all breeds. Consequently, the aim of the current study was to explore inbreeding levels in an open-registry breed and determine the impact open-registry has on genetic diversity. Complete pedigree records on all Australian working kelpies (AWKs) were provided by the Working Kelpie Council with the cleaned pedigree consisting of 86,671 individuals with a median pedigree depth of 6.6 generations. The average inbreeding coefficient in the AWK population was 0.049 with an increase in inbreeding coefficient of 0.0016/year. This demonstrates that opening a breed registry can have a beneficial impact on the level of inbreeding within a population over the longer-term. However, allowing for a generation length of 5.1 years yielded an effective population size of 61 for AWKs and demonstrated a pattern consistent with closed-registry dog populations of comparable size.
Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Linhagem
/
Variação Genética
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Doenças do Cão
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Cães
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Endogamia
Limite:
Animals
País/Região como assunto:
Oceania
Idioma:
En
Revista:
Vet J
Ano de publicação:
2021
Tipo de documento:
Article