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Registros recuperados: 3
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Genetic linkage map of chicken chromosome 1 from a Brazilian resource population Scientia Agricola
Nones,Kátia; Ledur,Mônica Corrêa; Ruy,Deborah Clea; Baron,Erica Elias; Moura,Ana Silvia Alves Meira Tavares; Coutinho,Luiz Lehmann.
A genetic map provides insight into genome organization and chromosomal location of markers and genes, and is important for quantitative trait loci (QTL) mapping. The objective of this study was to use a Brazilian resource population to construct a linkage map for chicken chromosome 1. Eighty microsatellite markers were tested and 26 informative markers were typed in an experimental F2 population developed by two generations of crossbreeding between a broiler sire line and a layer line. A total of 649 F2 individuals from seven full-sib families with about 95 F2 offspring each were genotyped. Multi-locus linkage analysis resulted in a chromosome 1 map of 26 ordered markers. Locus order was in general agreement with other published linkage maps, except for...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Microsatellites; Poultry; Mapping.
Ano: 2005 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162005000100003
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Mitochondrial and Y chromosome genetic diversity in the Portuguese Lidia bovine breed R. Bras. Zootec.
Correia,Pedro Bettencourt Cardoso; Baron,Erica Elias; Silva,Joaquim Fernando Moreira da; Gardyn,Óscar Cortés.
ABSTRACT A total of 80 samples were collected to analyze the mitochondrial DNA (mtDNA) and Y chromosome genetic diversity of two main Portuguese Lidia bovine populations and clarify their genetic relationships with Spanish Lidia lineages. A 521-bp D-loop fragment was sequenced in 40 animals belonging to four herds (three Brava dos Açores and one Casta Portuguesa) and the same number of samples were collected with equal distribution from males in order to genotype six microsatellites, one single nucleotide polymorphism, and one indel. The mtDNA diversity recorded was similar to that observed in Lidia cattle. Haplotype T3 was the most common (62.5%), followed by the African T1 haplotype (25%); very low frequencies were recorded for haplotypes T2 (2.5%) and...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Lidia cattle; Mitochondrial DNA; Portuguese lineages; Y chromosome.
Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982017000200099
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Strategic marker selection to detect quantitative trait loci in chicken Scientia Agricola
Ruy,Deborah Clea; Nones,Kátia; Baron,Erica Elias; Ledur,Mônica Corrêa; Melo,Cláudio Manoel Rodrigues de; Ambo,Marcel; Campos,Raquel de Lello Rocha; Coutinho,Luiz Lehmann.
Selective genotyping for a certain trait in individuals with extreme phenotypes contributes sufficient information to determine linkage between molecular markers and quantitative trait loci (QTL). In this experiment an F2 population, developed by crossing males from a broiler line with females from a layer line, was employed to detect QTL on chromosomes 3 and 5. Twenty-eight performance and carcass traits were measured in F2 offspring, and phenotypic correlations between traits were calculated. Body weight at 42 days (BW42) presented the greatest positive correlations with most other traits, with correlation between body weights at 35 and 41 days, weight gain between birth and 35, 41 and 42 days, as well as weights of carcass and some body parts superior...
Tipo: Info:eu-repo/semantics/article Palavras-chave: QTL; Broiler; Selective genotyping; Body weight.
Ano: 2005 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162005000200003
Registros recuperados: 3
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