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| Registros recuperados: 14 | |
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| Ianella,Patrícia; Albuquerque,Maria do Socorro Maués; Paiva,Samuel Rezende; Egito,Andréa Alves do; Almeida,Leonardo Daniel; Sereno,Fabiana T. P. S.; Carvalho,Luiz Felipe Ramos; Mariante,Arthur da Silva; McManus,Concepta Margaret. |
| Abstract The first horses were brought to Brazil by the colonizers after 1534. Over the centuries, these animals evolved and adapted to local environmental conditions usually unsuitable for exotic breeds, thereby originating locally adapted Brazilian breeds. The present work represents the first description of maternal genetic diversity in these horse breeds based on D-loop sequences. A D-Loop HSV-I fragment of 252 bp, from 141 horses belonging to ten Brazilian breeds / genetic groups (locally adapted and specialized breeds) were analysed. Thirty-five different haplotypes belonging to 18 haplogroups were identified with 33 polymorphic sites. Haplotype diversity (varying from 0.20 to 0.96) and nucleotide diversity (varying from 0.0039 to 0.0239) was lower... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Mitochondrial DNA; Genetic characterization; Equus caballus; Locally adapted breeds; Animal genetic resources. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572017000400604 |
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| Mariante,Arthur da Silva; Egito,Andréa Alves; Albuquerque,Maria do Socorro Maués; Paiva,Samuel Rezende; Ramos,Alexandre Floriani. |
| Most livestock are not indigenous to Brazil. Several animal species were considered domesticated in the pre-colonial period, since the indigenous people manage them as would be typical of European livestock production. For over 500 years there have been periodic introductions resulting in the wide range of genetic diversity that for centuries supported domestic animal production in the country. Even though these naturalized breeds have acquired adaptive traits after centuries of natural selection, they have been gradually replaced by exotic breeds, to such an extent, that today they are in danger of extinction To avoid further loss of this important genetic material, in 1983 Embrapa Genetic Resources and Biotechnology decided to include conservation of... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Animal genetic resources; Brazilian conservation program; Genetic variability; Microsatellites. |
| Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982008001300016 |
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| ABREU, U. G. P. de; ROSA, A. do N.; PORTES, J. V.; NOGUEIRA, E.; SILVA, J. C. B.; OLIVEIRA, L. O. F. de; SILVA, L. O. C. da; BATISTA, D. S. do N.. |
| Como fornecedores de genética, os produtores de touros têm sido desafiados a acompanhar o ritmo de novas tecnologias para acompanhar o desempenho de seus animais e ajudar seus clientes a interpretar os sistemas de avaliação em constante mudança. Pois a genealogia, o genótipo, a informação fenotípica e o desempenho da progênie são incorporados ao cálculo ao mesmo tempo. |
| Tipo: Comunicado Técnico (INFOTECA-E) |
Palavras-chave: Valores genéticos; Melhoramento Genético Animal; Parâmetro Genético; Gado Nelore.; Animal genetic resources; Beef cattle.. |
| Ano: 2018 |
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1096368 |
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| Paim,Tiago do Prado; McManus,Concepta; Vieira,Fábio Danilo; Oliveira,Stanley Robson de Medeiros; Facó,Olivardo; Azevedo,Hymerson Costa; Araújo,Adriana Mello de; Moraes,José Carlos Ferrugem; Yamagishi,Michel Eduardo Beleza; Carneiro,Paulo Luiz Souza; Caetano,Alexandre Rodrigues; Paiva,Samuel Rezende. |
| Abstract: The objective of this work was to evaluate the usefulness of a subset of 18 single nucleotide polymorphisms (SNPs) for breed identification of Brazilian Crioula, Morada Nova (MN), and Santa Inês (SI) sheep. Data of 588 animals were analyzed with the Structure software. Assignments higher than 90% confidence were observed in 82% of the studied samples. Most of the low-value assignments were observed in MN and SI breeds. Therefore, although there is a high reliability in this subset of 18 SNPs, it is not enough for an unequivocal assignment of the studied breeds, mainly of hair breeds. A more precise panel still needs to be developed for the widespread use in breed assignment. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Ovis aries; Animal genetic resources; Certification of origin; Genomics; Traceability. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2019000104302 |
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| Silva,Elizabete Cristina da; McManus,Concepta Margaret; Guimarães,Maria Pia Souza Lima Mattos de Paiva; Gouveia,Aurora M.G.; Facó,Olivardo; Pimentel,Daniel M.; Caetano,Alexandre Rodrigues; Paiva,Samuel Rezende. |
| Brazilian goats are generally kept in small herds and extensive rearing systems, mainly in the northeastern region of the country. Despite production improvement in recent years, the lack of pedigree control has affected genetic progress. This study aimed to validate a panel of 16 microsatellites for parentage testing in locally adapted and commercial goats breeds raised in Brazil, as well as to compare its efficiency with the panel recommended by the Brazilian Ministry of Agriculture, Livestock and Supplies (MAPA) in 2004. The number of alleles and expected heterozygosity (He) per marker ranged from four to 18, and from 0.051 to 0.831, respectively. Using all markers, 100% of parentage cases of the validation dataset were resolved with a strict confidence... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Parentage errors; Animal breeding; Animal genetic resources; Capra hircus. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572014000100010 |
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| Registros recuperados: 14 | |
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