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Animal genetics 21건

  1. [해외논문]   Issue Information  


    Animal genetics v.49 no.4 ,pp. 273 - 274 , 2018 , 0268-9146 ,

    초록

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    회원님의 원문열람 권한에 따라 열람이 불가능 할 수 있으며 권한이 없는 경우 해당 사이트의 정책에 따라 회원가입 및 유료구매가 필요할 수 있습니다.이동하는 사이트에서의 모든 정보이용은 NDSL과 무관합니다.

    NDSL에서는 해당 원문을 복사서비스하고 있습니다. 아래의 원문복사신청 또는 장바구니담기를 통하여 원문복사서비스 이용이 가능합니다.

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  2. [해외논문]   Genetic diversity, population structure and phylogenetic relationships of three indigenous pig breeds from Jiangxi Province, China, in a worldwide panel of pigs   SCI SCIE

    Wang, X. (State Key Laboratory of Pig Genetic Improvement and Production Technology, Jiangxi Agricultural University, 330045, Nanchang, China) , Wang, C. (State Key Laboratory of Pig Genetic Improvement and Production Technology, Jiangxi Agricultural University, 330045, Nanchang, China) , Huang, M. (State Key Laboratory of Pig Genetic Improvement and Production Technology, Jiangxi Agricultural University, 330045, Nanchang, China) , Tang, J. (State Key Laboratory of Pig Genetic Improvement and Production Technology, Jiangxi Agricultural University, 330045, Nanchang, China) , Fan, Y. (Department of Animal Science, Jiangxi Biotech Vocational College, 330200, Nanchang, China) , Li, Y. (State Key Laboratory of Pig Genetic Improvement and Production Technology, Jiangxi Agricultural University, 330045, Nanchang, China) , Li, X. (Unit of An) , Ji, H. , Ren, J. , Ding, N.
    Animal genetics v.49 no.4 ,pp. 275 - 283 , 2018 , 0268-9146 ,

    초록

    Summary Dongxiang Spotted, Pingxiang Two‐End‐Black and Yushan Black pigs are three indigenous breeds in Jiangxi Province, China, that have been listed in the national conservation program for Chinese indigenous livestock germplasm. Here, we investigated the genetic diversity and population structure of the nucleus populations of these three breeds in a worldwide context of European and Chinese pigs using Illumina Porcine 60K chips. Our data indicate that Dongxiang Spotted and Yushan Black pigs have recently experienced severe inbreeding. The two breeds show large runs‐of‐homozygosity values, long‐range extents of linkage disequilibrium and reduced observed heterozygosity. In contrast, Pingxiang Two‐End‐Black pigs are rich in genetic diversity and have few inbred individuals. Both phylogenetic and admixture analyses illustrate that Dongxiang Spotted and Yushan Black pigs are genetically close to their geographical neighbors in East China and that Pingxiang Two‐End‐Black pigs have a close relationship with three other Two‐End‐Black breeds in central China. Finally, we reconstructed the family structures of the three breeds and propose a reliable breeding strategy to better conserve these breeds.

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    회원님의 원문열람 권한에 따라 열람이 불가능 할 수 있으며 권한이 없는 경우 해당 사이트의 정책에 따라 회원가입 및 유료구매가 필요할 수 있습니다.이동하는 사이트에서의 모든 정보이용은 NDSL과 무관합니다.

    NDSL에서는 해당 원문을 복사서비스하고 있습니다. 아래의 원문복사신청 또는 장바구니담기를 통하여 원문복사서비스 이용이 가능합니다.

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  3. [해외논문]   Two MC1R loss‐of‐function alleles in cream‐coloured Australian Cattle Dogs and white Huskies   SCI SCIE

    Dü (Institute of Genetics, Vetsuisse Faculty, University of Bern, Bremgartenstrasse 109a, 3001, Bern, Switzerland) , rig, N. (Institute of Genetics, Vetsuisse Faculty, University of Bern, Bremgartenstrasse 109a, 3001, Bern, Switzerland) , Letko, A. (Institute of Genetics, Vetsuisse Faculty, University of Bern, Bremgartenstrasse 109a, 3001, Bern, Switzerland) , Lepori, V. (Institute of Genetics, Vetsuisse Faculty, University of Bern, Bremgartenstrasse 109a, 3001, Bern, Switzerland) , Hadji Rasouliha, S. (VetGen, Ann Arbor, MI, 48108, USA) , Loechel, R. (Laboklin, 97688, Bad Kissingen, Germany) , Kehl, A. (Department of Veterinary Biosciences, University of Helsinki, 00014, Helsinki, Finland) , Hytö (Department of Veterinary Biosciences, University of Helsinki, 00014, Helsinki, Finland) , nen, M. K. , Lohi, H. , Mauri, N. , Dietrich, J. , Wiedmer, M. , Drö , gemü , ller, M. , Jagannathan, V. , Schmutz, S. M. , Leeb, T.
    Animal genetics v.49 no.4 ,pp. 284 - 290 , 2018 , 0268-9146 ,

    초록

    Summary Loss‐of‐function variants in the MC1R gene cause recessive red or yellow coat‐colour phenotypes in many species. The canine MC1R :c.916C>T (p.Arg306Ter) variant is widespread and found in a homozygous state in many uniformly yellow‐ or red‐coloured dogs. We investigated cream‐coloured Australian Cattle Dogs whose coat colour could not be explained by this variant. A genome‐wide association study with 10 cream and 123 red Australian Cattle Dogs confirmed that the cream locus indeed maps to MC1R . Whole‐genome sequencing of cream dogs revealed a single nucleotide variant within the MITF binding site of the canine MC1R promoter. We propose to designate the mutant alleles at MC1R :c.916C>T as e 1 and at the new promoter variant as e 2 . Both alleles segregate in the Australian Cattle Dog breed. When we considered both alleles in combination, we observed perfect association between the MC1R genotypes and the cream coat colour phenotype in a cohort of 10 cases and 324 control dogs. Analysis of the MC1R transcript levels in an e 1 /e 2 compound heterozygous dog confirmed that the transcript levels of the e 2 allele were markedly reduced with respect to the e 1 allele. We further report another MC1R loss‐of‐function allele in Alaskan and Siberian Huskies caused by a 2‐bp deletion in the coding sequence, MC1R :c.816_817delCT. We propose to term this allele e 3 . Huskies that carry two copies of MC1R loss‐of‐function alleles have a white coat colour.

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    회원님의 원문열람 권한에 따라 열람이 불가능 할 수 있으며 권한이 없는 경우 해당 사이트의 정책에 따라 회원가입 및 유료구매가 필요할 수 있습니다.이동하는 사이트에서의 모든 정보이용은 NDSL과 무관합니다.

    NDSL에서는 해당 원문을 복사서비스하고 있습니다. 아래의 원문복사신청 또는 장바구니담기를 통하여 원문복사서비스 이용이 가능합니다.

    이미지

    Fig. 1 이미지
  4. [해외논문]   Comparative analysis of the blood transcriptomes between wolves and dogs   SCI SCIE

    Yang, X. (College of Life Science, Qufu Normal University, Jingxuan West Road No. 57, Qufu, Shandong, 273165, China) , Zhang, H. (College of Life Science, Qufu Normal University, Jingxuan West Road No. 57, Qufu, Shandong, 273165, China) , Shang, J. (College of Information Science and Engineering, Qufu Normal University, Yantai North Road No. 80, Rizhao, Shandong, 276826, China) , Liu, G. (College of Life Science, Qufu Normal University, Jingxuan West Road No. 57, Qufu, Shandong, 273165, China) , Xia, T. (College of Life Science, Qufu Normal University, Jingxuan West Road No. 57, Qufu, Shandong, 273165, China) , Zhao, C. (College of Life Science, Qufu Normal University, Jingxuan West Road No. 57, Qufu, Shandong, 273165, China) , Sun, G. (College of Life Science, Qufu Normal University, Jingxuan West Road No. 57, Qufu, Shandong, 273165,) , Dou, H.
    Animal genetics v.49 no.4 ,pp. 291 - 302 , 2018 , 0268-9146 ,

    초록

    Summary Dogs were domesticated by human and originated from wolves. Their evolutionary relationships have attracted much scientific interest due to their genetic affinity but different habitats. To identify the differences between dogs and wolves associated with domestication, we analysed the blood transcriptomes of wolves and dogs by RNA‐Seq. We obtained a total of 30.87 Gb of raw reads from two dogs and three wolves using RNA‐Seq technology. Comparisons of the wolf and dog transcriptomes revealed 524 genes differentially expressed genes between them. We found that some genes related to immune function ( DCK , ICAM4 , GAPDH and BSG ) and aerobic capacity ( HBA1 , HBA2 and HBB ) were more highly expressed in the wolf. Six differentially expressed genes related to the innate immune response ( CCL23 , TRIM10 , DUSP10 , RAB27A , CLEC5A and GCH1 ) were found in the wolf by a Gene Ontology enrichment analysis. Immune system development was also enriched only in the wolf group. The ALAS2 , HMBS and FECH genes, shown to be enriched by the Kyoto Encyclopedia of Genes and Genomes analysis, were associated with the higher aerobic capacity and hypoxia endurance of the wolf. The results suggest that the wolf might have greater resistance to pathogens, hypoxia endurance and aerobic capacity than dogs do.

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    무료다운로드 유료다운로드

    회원님의 원문열람 권한에 따라 열람이 불가능 할 수 있으며 권한이 없는 경우 해당 사이트의 정책에 따라 회원가입 및 유료구매가 필요할 수 있습니다.이동하는 사이트에서의 모든 정보이용은 NDSL과 무관합니다.

    NDSL에서는 해당 원문을 복사서비스하고 있습니다. 아래의 원문복사신청 또는 장바구니담기를 통하여 원문복사서비스 이용이 가능합니다.

    이미지

    Fig. 1 이미지
  5. [해외논문]   Accuracy of genotype imputation in Labrador Retrievers   SCI SCIE

    Friedrich, J. (Division of Genetics and Genomics, The Roslin Institute and Royal (Dick) School of Veterinary Studies, University of Edinburgh, Midlothian, EH25 9RG, UK) , Antolí (Division of Genetics and Genomics, The Roslin Institute and Royal (Dick) School of Veterinary Studies, University of Edinburgh, Midlothian, EH25 9RG, UK) , n, R. (Division of Genetics and Genomics, The Roslin Institute and Royal (Dick) School of Veterinary Studies, University of Edinburgh, Midlothian, EH25 9RG, UK) , Edwards, S. M. (Division of Genetics and Genomics, The Roslin Institute and Royal (Dick) School of Veterinary Studies, University of Edinburgh, Midlothian, EH25 9RG, UK) , Sá (Animal and Veterinary Sciences Group, Scotland's Rural College, Edinburgh, EH9 3JG, UK) , nchez‐ (Division of Genetics and Genomics, The Roslin Institute and Royal (Dick) School of Veterinary St) , Molano, E. , Haskell, M. J. , Hickey, J. M. , Wiener, P.
    Animal genetics v.49 no.4 ,pp. 303 - 311 , 2018 , 0268-9146 ,

    초록

    Summary The dog is a valuable model species for the genetic analysis of complex traits, and the use of genotype imputation in dogs will be an important tool for future studies. It is of particular interest to analyse the effect of factors like single nucleotide polymorphism (SNP) density of genotyping arrays and relatedness between dogs on imputation accuracy due to the acknowledged genetic and pedigree structure of dog breeds. In this study, we simulated different genotyping strategies based on data from 1179 Labrador Retriever dogs. The study involved 5826 SNPs on chromosome 1 representing the high density (HighD) array; the low‐density (LowD) array was simulated by masking different proportions of SNPs on the HighD array. The correlations between true and imputed genotypes for a realistic masking level of 87.5% ranged from 0.92 to 0.97, depending on the scenario used. A correlation of 0.92 was found for a likely scenario (10% of dogs genotyped using HighD, 87.5% of HighD SNPs masked in the LowD array), which indicates that genotype imputation in Labrador Retrievers can be a valuable tool to reduce experimental costs while increasing sample size. Furthermore, we show that genotype imputation can be performed successfully even without pedigree information and with low relatedness between dogs in the reference and validation sets. Based on these results, the impact of genotype imputation was evaluated in a genome‐wide association analysis and genomic prediction in Labrador Retrievers.

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    원문보기
    무료다운로드 유료다운로드

    회원님의 원문열람 권한에 따라 열람이 불가능 할 수 있으며 권한이 없는 경우 해당 사이트의 정책에 따라 회원가입 및 유료구매가 필요할 수 있습니다.이동하는 사이트에서의 모든 정보이용은 NDSL과 무관합니다.

    NDSL에서는 해당 원문을 복사서비스하고 있습니다. 아래의 원문복사신청 또는 장바구니담기를 통하여 원문복사서비스 이용이 가능합니다.

    이미지

    Fig. 1 이미지
  6. [해외논문]   A genome‐wide association study suggests several novel candidate genes for carcass traits in Chinese Simmental beef cattle   SCI SCIE

    Chang, T. (Laboratory of Molecular Biology and Bovine Breeding, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing, 100193, China) , Xia, J. (Laboratory of Molecular Biology and Bovine Breeding, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing, 100193, China) , Xu, L. (Laboratory of Molecular Biology and Bovine Breeding, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing, 100193, China) , Wang, X. (Laboratory of Molecular Biology and Bovine Breeding, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing, 100193, China) , Zhu, B. (Laboratory of Molecular Biology and Bovine Breeding, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing, 100193, China) , Zhang, L. (Laboratory of Molecular Biology and Bovine Breeding, Institute of) , Gao, X. , Chen, Y. , Li, J. , Gao, H.
    Animal genetics v.49 no.4 ,pp. 312 - 316 , 2018 , 0268-9146 ,

    초록

    Summary A genome‐wide association study (GWAS) was conducted for two carcass traits in Chinese Simmental beef cattle. The experimental population consisted of 1301 individuals genotyped with the Illumina BovineHD SNP BeadChip (770K). After quality control, 671 990 SNPs and 1217 individuals were retained for the GWAS. The phenotypic traits included carcass weight and bone weight, which were measured after the cattle were slaughtered at 16 to 18 months of age. Three statistical models—a fixed polygene model, a random polygene model and a composite interval mapping polygene model—were used for the GWAS. The genome‐wide significance threshold after Bonferroni correction was 7.44E‐08 (= 0.05/671 990). In this study, we detected eight and seven SNPs significantly associated with carcass weight and bone weight respectively. In total, 11 candidate genes were identified within or close to these significant SNPs. Of these, we found several novel candidate genes, including PBX1 , GCNT4 , ALDH1A2 , LCORL and WDFY3, to be associated with carcass weight and bone weight in Chinese Simmental beef cattle, and their functional roles need to be verified in further studies.

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    회원님의 원문열람 권한에 따라 열람이 불가능 할 수 있으며 권한이 없는 경우 해당 사이트의 정책에 따라 회원가입 및 유료구매가 필요할 수 있습니다.이동하는 사이트에서의 모든 정보이용은 NDSL과 무관합니다.

    NDSL에서는 해당 원문을 복사서비스하고 있습니다. 아래의 원문복사신청 또는 장바구니담기를 통하여 원문복사서비스 이용이 가능합니다.

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  7. [해외논문]   Mapping QTL for production traits in segregating PiEtrain pig populations using genome‐wide association study results of F2 crosses   SCI SCIE

    Schmid, M. (Institute of Animal Science, University of Hohenheim, 70599, Stuttgart, Germany) , Maushammer, M. (Institute of Animal Science, University of Hohenheim, 70599, Stuttgart, Germany) , Preuß, S. (Institute of Animal Science, University of Hohenheim, 70599, Stuttgart, Germany) , Bennewitz, J. (Institute of Animal Science, University of Hohenheim, 70599, Stuttgart, Germany)
    Animal genetics v.49 no.4 ,pp. 317 - 320 , 2018 , 0268-9146 ,

    초록

    Summary In this study, genome‐wide association study (GWAS) results of porcine F2 crosses were used to map QTL in outcross PiEtrain populations. For this purpose, two F2 crosses (PiEtrain × Meishan, n =< 304; PiEtrain × Wild Boar, n =< 291) were genotyped with the PorcineSNP60v2 BeadChip and phenotyped for the dressing yield, carcass length, daily gain and drip loss traits. GWASs were conducted in the pooled F2 cross applying single marker mixed linear models. For the investigated traits, between two and five (in total 15) QTL core regions, spanning 250 segregating SNPs around a significant trait‐associated peak SNP, were identified. The SNPs within the QTL core regions were subsequently tested for trait association in two outcross PiEtrain populations consisting of 771 progeny‐tested boars and 210 sows with their own performance records. In the sow (boar) dataset, five (eight) of the 15 mapped QTL were validated. Hence, many QTL mapped in the F2 crosses (with PiEtrain as a common founder breed) are still segregating in the current PiEtrain breed. This confirms the usefulness of existing F2 crosses for mapping QTL that are still segregating in the recent founder breed generation. The approach utilizes the high power of an F2 cross to map QTL in a breeding population for which it is not guaranteed that they would be found using a GWAS in this population.

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    원문보기
    무료다운로드 유료다운로드

    회원님의 원문열람 권한에 따라 열람이 불가능 할 수 있으며 권한이 없는 경우 해당 사이트의 정책에 따라 회원가입 및 유료구매가 필요할 수 있습니다.이동하는 사이트에서의 모든 정보이용은 NDSL과 무관합니다.

    NDSL에서는 해당 원문을 복사서비스하고 있습니다. 아래의 원문복사신청 또는 장바구니담기를 통하여 원문복사서비스 이용이 가능합니다.

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  8. [해외논문]   Taking advantage from phenotype variability in a local animal genetic resource: identification of genomic regions associated with the hairless phenotype in Casertana pigs   SCI SCIE

    Schiavo, G. (Division of Animal Sciences, Department of Agricultural and Food Sciences, University of Bologna, Viale Fanin 46, 40127, Bologna, Italy) , Bertolini, F. (Division of Animal Sciences, Department of Agricultural and Food Sciences, University of Bologna, Viale Fanin 46, 40127, Bologna, Italy) , Utzeri, V. J. (Division of Animal Sciences, Department of Agricultural and Food Sciences, University of Bologna, Viale Fanin 46, 40127, Bologna, Italy) , Ribani, A. (Division of Animal Sciences, Department of Agricultural and Food Sciences, University of Bologna, Viale Fanin 46, 40127, Bologna, Italy) , Geraci, C. (Division of Animal Sciences, Department of Agricultural and Food Sciences, University of Bologna, Viale Fanin 46, 40127, Bologna, Italy) , Santoro, L. (ConSDABI –) , Ó (National Focal Point Italiano FAO, Contrada Piano Cappelle, 82100, Benevento, Italy) , vilo, C. , Ferná , ndez, A. I. , Gallo, M. , Fontanesi, L.
    Animal genetics v.49 no.4 ,pp. 321 - 325 , 2018 , 0268-9146 ,

    초록

    Summary Casertana is an endangered autochthonous pig breed (raised in south‐central Italy) that is considered to be the descendant of the influential Neapolitan pig population that was used to improve British breeds in the 19th century. Casertana pigs are characterized by a typical, almost complete, hairless phenotype, even though a few Casertana pigs are normal haired. In this work, using Illumina PorcineSNP60 BeadChip data, we carried out a genome‐wide association study and an F ST analysis with this breed by comparing animals showing the classical hairless phenotype ( n =< 81) versus pigs classified as haired ( n =< 15). Combining the results obtained with the two approaches, we identified two significant regions: one on porcine chromosome (SSC) 7 and one on SSC15. The SSC7 region contains the forkhead box N3 ( FOXN3 ) gene, the most plausible candidate gene of this region, considering that mutations in another gene of the same family ( forkhead box N1 ; Foxn1 or FOXN1 ) are responsible for the nude locus in rodents and alopecia in humans. Another potential candidate gene, rho guanine nucleotide exchange factor 10 ( ARHGEF10 ), is located in the SSC15 region. FOXN3 and ARHGEF10 have been detected as differentially expressed in androgenetic and senescent alopecia respectively. This study on an autochthonous pig breed contributes to shed some light on novel genes potentially involved in hair development and growth and demonstrates that local animal breeds can be valuable genetic resources for disclosing genetic factors affecting unique traits, taking advantage of phenotype variability segregating in small populations.

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    회원님의 원문열람 권한에 따라 열람이 불가능 할 수 있으며 권한이 없는 경우 해당 사이트의 정책에 따라 회원가입 및 유료구매가 필요할 수 있습니다.이동하는 사이트에서의 모든 정보이용은 NDSL과 무관합니다.

    NDSL에서는 해당 원문을 복사서비스하고 있습니다. 아래의 원문복사신청 또는 장바구니담기를 통하여 원문복사서비스 이용이 가능합니다.

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  9. [해외논문]   Genome‐wide association study confirms that the chromosome Z harbours a region responsible for rumplessness in Hongshan chickens   SCI SCIE

    Wang, Q. (National Engineering Laboratory for Animal Breeding, Department of Animal Genetics and Breeding, College of Animal Science and Technology, China Agricultural University, Beijing, 100193, China) , Pi, J. (Hubei Academy of Agricultural Sciences/Hubei Key Laboratory of Animal Embryonic Engineering and Molecular Breeding, Institute of Animal Husbandry and Veterinary Science, Wuhan, Hubei Province, 430064, China) , Shen, J. (Hubei Academy of Agricultural Sciences/Hubei Key Laboratory of Animal Embryonic Engineering and Molecular Breeding, Institute of Animal Husbandry and Veterinary Science, Wuhan, Hubei Province, 430064, China) , Pan, A. (Hubei Academy of Agricultural Sciences/Hubei Key Laboratory of Animal Embryonic Engineering and Molecular Breeding, Institute of Animal Husbandry and Veterinary Science, Wuhan, Hubei Province, 430064, China) , Qu, L. (National Engineering Labor)
    Animal genetics v.49 no.4 ,pp. 326 - 328 , 2018 , 0268-9146 ,

    초록

    Summary Rumplessness in Hongshan chickens has been reported as a novel sex‐linked characteristic. Re‐sequencing data suggest that a pseudogene on the Z chromosome, LOC431648 , is affiliated with this phenotype. In this study, we chose 23 rumpless and 25 normal Hongshan chickens to localize the potential variation by means of a genome‐wide association study using a high density microarray. A region on the Z chromosome was found to be closely associated with rumplessness in Hongshan chickens. The region, located in gene LINGO2 , was approximately 3 Mb away from pseudogene LOC431648 . The function of this gene has not yet been studied in birds. Differential expression of the candidate genes in the tail feather follicles was not detected by q‐PCR, which suggests that the rumplessness trait could be attributed to other genetic mechanisms.

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    회원님의 원문열람 권한에 따라 열람이 불가능 할 수 있으며 권한이 없는 경우 해당 사이트의 정책에 따라 회원가입 및 유료구매가 필요할 수 있습니다.이동하는 사이트에서의 모든 정보이용은 NDSL과 무관합니다.

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  10. [해외논문]   Validated quantitative trait loci for eggshell quality in experimental and commercial laying hens   SCI SCIE

    Tuiskula‐ (Natural Resources Institute Finland (Luke), Production Systems, FI‐31600, Jokioinen, Finland) , Haavisto, M. (Natural Resources Institute Finland (Luke), Production Systems, FI‐31600, Jokioinen, Finland) , Honkatukia, M. (Avian Biology the Roslin Institute and Royal (Dick) School of Veterinary Studies, University of Edinburgh, Easter Bush, Midlothian, EH25 9RG, UK) , Dunn, I. C. (College of Medical, Veterinary and Life Sciences (MVLS), IBAHCM, University of Glasgow, University Avenue, Glasgow G128QQ, UK) , Bain, M. M. (Swedish University of Agricultural Sciences, Almas Allé) , De Koning, D. J. (8, 75507, Uppsala, Sweden) , Preisinger, R. (Lohmann Tierzucht GmbH, Am Seedeich 9‐11, 27472, Cuxhaven, Germany) , Schmutz, M. (Lohmann Tierzucht GmbH, Am Seedeich 9‐11, 27472, Cuxhaven, Germany) , Arango, J. (Hy‐) , Fischer, D. , Vilkki, J.
    Animal genetics v.49 no.4 ,pp. 329 - 333 , 2018 , 0268-9146 ,

    초록

    Summary Compromised eggshell quality causes considerable economic losses for the egg industry. Breeding for improved eggshell quality has been very challenging. Eggshell quality is a trait that would greatly benefit from marker‐assisted selection, which would allow the selection of sires for their direct contribution to the trait and would also allow implementation of measurements integrating a number of shell parameters that are difficult to measure. In this study, we selected the most promising autosomal quantitative trait loci (QTL) affecting eggshell quality on chromosomes 2, 3, 6 and 14 from earlier experiments and we extended the F 2 population to include 1599 F 2 females. The study was repeated on two commercial populations: Lohmann Tierzucht Rhode Island Red line ( n =< 692 females) and a Hy‐Line White Plymouth Rock line ( n =< 290 progeny tested males). We analyzed the selected autosomal QTL regions on the three populations with SNP markers at 4–13 SNPs/Mb density. QTL for eggshell quality were replicated on all studied regions in the F 2 population. New QTL were detected for eggshell color on chromosomes 3 and 6. Marker associations with eggshell quality traits were validated in the tested commercial lines on chromosomes 2, 3 and 6, thus paving the way for marker‐assisted selection for improved eggshell quality.

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