Characterization of genetic diversity and gene mapping in two Swedish local chicken breeds
The aim of this paper is to study genetic diversity in the two Swedish local chicken breeds Bohuslän-Dals svarthöna and Hedemorahöna. The now living birds of both of these breeds (about 500 for Bohuslän-Dals svarthöna and 2600 for Hedemorahöna) originate from small relicts of earlier larger populati...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
Frontiers Media S.A.
2015-02-01
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| Series: | Frontiers in Genetics |
| Subjects: | |
| Online Access: | http://journal.frontiersin.org/Journal/10.3389/fgene.2015.00044/full |
| _version_ | 1811303693253869568 |
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| author | Anna Maria Johansson Ronald Michael Nelson |
| author_facet | Anna Maria Johansson Ronald Michael Nelson |
| author_sort | Anna Maria Johansson |
| collection | DOAJ |
| description | The aim of this paper is to study genetic diversity in the two Swedish local chicken breeds Bohuslän-Dals svarthöna and Hedemorahöna. The now living birds of both of these breeds (about 500 for Bohuslän-Dals svarthöna and 2600 for Hedemorahöna) originate from small relicts of earlier larger populations. An additional aim was to make an attempt to map loci associated with a trait that are segregating in both these breeds. The 60k SNP chip was used to genotype 12 Bohuslän-Dals svarthöna and 22 Hedemorahöna. The mean inbreeding coefficient was considerably larger in the samples from Hedemorahöna than in the samples from Bohuslän-Dals svarthöna. Also the proportion of homozygous SNPs in individuals was larger in Hedemorahöna. In contrast, on the breed level, the number of segregating SNPs were much larger in Hedemorahöna than in Bohuslän-Dals svarthöna. A multidimensional scaling plot shows that the two breeds form clusters well separated from each other. Both these breeds segregate for the dermal hyperpigmentation phenotype. In Bohuslän-Dals svarthöna most animals have dark skin, but some individuals with lighter skin exists (most easily detected by their red comb). An earlier study of the Fm locus showed that this breed has the same complex rearrangement involving the EDN3 gene as Silkie chicken and two other studied Asian breeds. In the breed Hedemorahöna, most individuals have normal skin pigmentation (and red comb), but there are some birds with darker skin and dark comb. In this study the involvement of the EDN3 gene is confirmed also in Hedemorahöna. In addition we identify a region on chromosome 21 that is significantly associated with the trait. |
| first_indexed | 2024-04-13T07:52:35Z |
| format | Article |
| id | doaj.art-7382d90131a04ed7964ba834265fddcc |
| institution | Directory Open Access Journal |
| issn | 1664-8021 |
| language | English |
| last_indexed | 2024-04-13T07:52:35Z |
| publishDate | 2015-02-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Genetics |
| spelling | doaj.art-7382d90131a04ed7964ba834265fddcc2022-12-22T02:55:30ZengFrontiers Media S.A.Frontiers in Genetics1664-80212015-02-01610.3389/fgene.2015.00044124950Characterization of genetic diversity and gene mapping in two Swedish local chicken breedsAnna Maria Johansson0Ronald Michael Nelson1Swedish University of Agricultural SciencesSwedish University of Agricultural SciencesThe aim of this paper is to study genetic diversity in the two Swedish local chicken breeds Bohuslän-Dals svarthöna and Hedemorahöna. The now living birds of both of these breeds (about 500 for Bohuslän-Dals svarthöna and 2600 for Hedemorahöna) originate from small relicts of earlier larger populations. An additional aim was to make an attempt to map loci associated with a trait that are segregating in both these breeds. The 60k SNP chip was used to genotype 12 Bohuslän-Dals svarthöna and 22 Hedemorahöna. The mean inbreeding coefficient was considerably larger in the samples from Hedemorahöna than in the samples from Bohuslän-Dals svarthöna. Also the proportion of homozygous SNPs in individuals was larger in Hedemorahöna. In contrast, on the breed level, the number of segregating SNPs were much larger in Hedemorahöna than in Bohuslän-Dals svarthöna. A multidimensional scaling plot shows that the two breeds form clusters well separated from each other. Both these breeds segregate for the dermal hyperpigmentation phenotype. In Bohuslän-Dals svarthöna most animals have dark skin, but some individuals with lighter skin exists (most easily detected by their red comb). An earlier study of the Fm locus showed that this breed has the same complex rearrangement involving the EDN3 gene as Silkie chicken and two other studied Asian breeds. In the breed Hedemorahöna, most individuals have normal skin pigmentation (and red comb), but there are some birds with darker skin and dark comb. In this study the involvement of the EDN3 gene is confirmed also in Hedemorahöna. In addition we identify a region on chromosome 21 that is significantly associated with the trait.http://journal.frontiersin.org/Journal/10.3389/fgene.2015.00044/fullSNPgenetic diversitychickenComb colourEDN3dermal hyperpimentation |
| spellingShingle | Anna Maria Johansson Ronald Michael Nelson Characterization of genetic diversity and gene mapping in two Swedish local chicken breeds Frontiers in Genetics SNP genetic diversity chicken Comb colour EDN3 dermal hyperpimentation |
| title | Characterization of genetic diversity and gene mapping in two Swedish local chicken breeds |
| title_full | Characterization of genetic diversity and gene mapping in two Swedish local chicken breeds |
| title_fullStr | Characterization of genetic diversity and gene mapping in two Swedish local chicken breeds |
| title_full_unstemmed | Characterization of genetic diversity and gene mapping in two Swedish local chicken breeds |
| title_short | Characterization of genetic diversity and gene mapping in two Swedish local chicken breeds |
| title_sort | characterization of genetic diversity and gene mapping in two swedish local chicken breeds |
| topic | SNP genetic diversity chicken Comb colour EDN3 dermal hyperpimentation |
| url | http://journal.frontiersin.org/Journal/10.3389/fgene.2015.00044/full |
| work_keys_str_mv | AT annamariajohansson characterizationofgeneticdiversityandgenemappingintwoswedishlocalchickenbreeds AT ronaldmichaelnelson characterizationofgeneticdiversityandgenemappingintwoswedishlocalchickenbreeds |