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| Registros recuperados: 33 | |
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| Saavedra, Carlos; Bachere, Evelyne. |
| Interest in bivalve genomics has emerged during the last decade, owing to the importance of these organisms in aquaculture and fisheries and to their role in marine environmental science. Knowledge of bivalve genome structure, function and evolution resulting from 20th century "single gene" approaches is limited, but genomic technologies are called to dramatically increase it. Research based on linkage maps, transcriptomics and proteomics is being carried out to study the genetic and molecular bases of traits of interest in bivalve farming industry, mainly disease susceptibility, tolerance to environmental stress, and growth. The Pacific oyster (Crassostrea gigas) is now the focus of an international genome-sequencing consortium. The use of bivalves in... |
| Tipo: Text |
Palavras-chave: Shellfish toxins; Feeding; Stress; Proteomics; Genomics; Bivalves. |
| Ano: 2006 |
URL: http://archimer.ifremer.fr/doc/2006/publication-1709.pdf |
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| Besson, Mathieu; Allal, Francois; Chatain, Beatrice; Vergnet, Alain; Clota, Frederic; Ferrari, Sebastien; Vandeputte, Marc. |
| We estimated genetic parameters of feed conversion ratio (FCR) and daily growth coefficient (DGC) using individual phenotypes measured in aquariums under a restricted feeding regime and genomic information on 2,722 SNP markers. The results showed a moderate heritability of both traits (0.26 for FCR and 0.41 for DGC) as well as close to unity negative genetic correlation between them. Thus, FCR of fish in aquariums could be improved by selecting fish for higher DGC. Nevertheless, these results must be taken with caution until we know whether individual FCR measured in aquariums also reflects the FCR of fish reared in groups. |
| Tipo: Text |
Palavras-chave: Feed efficiency; Fish; Genomics. |
| Ano: 2018 |
URL: http://archimer.ifremer.fr/doc/00446/55756/57416.pdf |
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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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| Farah,Michel Marques; Fortes,Marina Rufino Salinas; Kelly,Matthew; Porto-Neto,Laercio Ribeiro; Meira,Camila Tangari; Carreño,Luis Orlando Duitama; Fonseca,Ricardo da; Moore,Stephen Stewart. |
| Abstract: The objective of this work was to evaluate the effects of genomic information on the genetic evaluation of hip height in Brahman cattle using different matrices built from genomic and pedigree data. Hip height measurements from 1,695 animals, genotyped with high-density SNP chip or imputed from 50 K high-density SNP chip, were used. The numerator relationship matrix (NRM) was compared with the H matrix, which incorporated the NRM and genomic relationship (G) matrix simultaneously. The genotypes were used to estimate three versions of G: observed allele frequency (HGOF), average minor allele frequency (HGMF), and frequency of 0.5 for all markers (HG50). For matrix comparisons, animal data were either used in full or divided into calibration (80%... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Bos indicus; Beef cattle; Genomics; Rare alleles. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2018000600717 |
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| Zaminhan-Hassemer,Micheli; Michelato,Mariana; Boscolo,Wilson Rogério; Urbich,Allan Vinnícius; Cruz,Thais Pereira da; Almeida,Fernanda Losi Alves de; Furuya,Valéria Rossetto Barriviera; Furuya,Wilson Massamitu. |
| ABSTRACT This research was conducted to determine optimal dietary histidine requirement of grow-out Nile tilapia, Oreochromis niloticus, based on muscle development, expression of muscle-growth-related genes, and blood parameters. Fish (n = 288, initial body weight of 64.17±0.53 g) were fed extruded diets with graded levels of histidine (4.23, 5.44, 7.17, 8.91, and 11.57 g kg−1), containing approximately 289 g kg−1 crude protein and 3565 kcal kg−1 digestible energy. The study followed a completely randomized design with five treatments and four replicates each, for 65 days. There was a quadratic effect of dietary histidine on final body weight, feed conversion, and net protein utilization, and the best values were optimized at 8.09, 7.88, and 7.33 g kg−1,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Amino acids; Aquaculture; Fish nutrition; Genomics. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982020000100201 |
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| Curik,Ino; Ferenčaković,Maja; Sölkner,Johann. |
| ABSTRACT Inbreeding depression, reduction in performance of quantitative traits, including reproduction and survival, caused by inbreeding, is a well-known phenomenon observed in almost all experimental, domesticated, and natural populations. In spite of its importance to the fate of a small population and numerous research performed in the last century, the genetic basis of inbreeding depression is still unclear. Recent fast development of molecular techniques has enabled estimation of a genomic inbreeding coefficient (FROH), which reflects realized autozygosity and can be further partitioned to chromosomes and chromosomal segments. In this review, we first describe classical approach used in the estimation of inbreeding in livestock populations, followed... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Autozygosity; Detrimental load; Genomics; Runs of homozygosity. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982017000900773 |
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| Meneghini,Rogério; Gamba,Estêvão C.. |
| Several genome sequencing programs were launched in Brazil by the end of the nineties and the early 2000s.The most important initiatives were supported by the ONSA program (http://watson.fapesp.br/onsa/Genoma3.htm) and aimed at gaining domain in genomic technology and bringing molecular biology to the state of art. Two mainsets of data were collected in the 1996-2007 period to evaluate the results of these genome programs: the scientific production (Scopus and Web of Science databases) and the register of patents (US Patent and Trademark Office), both related to the progress of molecular biology along this period. In regard to the former, Brazil took a great leap in comparison to 17 other developed and developing countries, being only surpassed by China.... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Science assessment; Genomics; Scientometrics; Molecular biology. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652011000200031 |
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| CAMPOS-DE QUIROZ,HUGO. |
| Recent technological advancements have substantially expanded our ability to analyze and understand plant genomes and to reduce the gap existing between genotype and phenotype. The fast evolving field of genomics allows scientists to analyze thousand of genes in parallel, to understand the genetic architecture of plant genomes and also to isolate the genes responsible for mutations. Furthermore, whole genomes can now be sequenced. This review addresses these issues and also discusses ways to extract biological meaning from DNA data. Although genomic issuesare addressed from a plant perspective, this review provides insights into the genomic analyses of other organisms |
| Tipo: Journal article |
Palavras-chave: Genomics; Plant breeding; Gene discovery. |
| Ano: 2002 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602002000300013 |
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| Scandalios,J.G.. |
| Molecular oxygen (O2) is the premier biological electron acceptor that serves vital roles in fundamental cellular functions. However, with the beneficial properties of O2 comes the inadvertent formation of reactive oxygen species (ROS) such as superoxide (O2<FONT FACE=Symbol>·-</FONT>), hydrogen peroxide, and hydroxyl radical (OH<FONT FACE=Symbol>·</FONT>). If unabated, ROS pose a serious threat to or cause the death of aerobic cells. To minimize the damaging effects of ROS, aerobic organisms evolved non-enzymatic and enzymatic antioxidant defenses. The latter include catalases, peroxidases, superoxide dismutases, and glutathione S-transferases (GST). Cellular ROS-sensing mechanisms are not well understood, but a number of... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Catalase; Aging; Telomeres; Gene regulation; Superoxide dismutase; Genomics. |
| Ano: 2005 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2005000700003 |
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| Registros recuperados: 33 | |
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