Phenotypic Trends
Mostrando 1-12 de 12 artigos, teses e dissertações.
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1. Genetic parameters and trends of morphometric traits of GIFT tilapia under selection for weight gain
The main factor considered in breeding programs for fish is growth, which can be assessed in terms of a gain in either weight or body measurements. This study was undertaken to evaluate the morphometric traits of GIFT strain tilapia (Oreochromis sp.) selected for weight gain. The data set used contained information on 6,650 animals. The genetic values of 8,5
Sci. agric. (Piracicaba, Braz.). Publicado em: 2014-08
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2. Genetic parameters and genetic and phenotypic trends of performance traits of equines from the Brazilian Army
The objective of this research was to compare the magnitude of genetic parameters (coefficients of heritability and genetic correlation) as estimated by the Restricted Maximum Likelihood (REML) method and Bayesian Inference, and to estimate the genetic and phenotypic trends to the traits height at the withers (HW24) and weight at 24 months of age (W24). The
Revista Brasileira de Zootecnia. Publicado em: 2012-06
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3. Aspectos genéticos e fenotípicos de características produtivas, temperamento e repelência em bovinos da raça Nelore / Phenotypic and genetic aspects to productive traits, temperament and resistance in Nelore beef cattle
The general aim of this study was evaluated phenotypic and genetic aspects to growth traits, temperament and resistance in Nelore beef cattle. The traits analyzed in this study were birth weight (BW, N=13,374), weaning weight (WW, N=19,835), weight to over year (W18M, N=15,291), weight gain from weaning to over year (WG345, N=12,873), differentiated weight g
Publicado em: 2008
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4. Estudo genético da qualidade de carne em linhagem macho de frangos de corte / Genetic study of meat quality traits in a male broiler line
This research was conducted to estimate genetic and phenotypic parameters of meat quality, performance, carcass and body composition traits in a male broiler line provided by Agroceres Ross Melhoramento Genético de Aves S. A. Broilers measured belonged to a sib test program, in which data from sibs of the individuals to be selected in this line, called elit
Publicado em: 2006
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5. Germinação, crescimento, atividade fotossintetica e translocação de compostos de carbono em especies arboreas tropicais : estudo comparativo e influencia de sombreamento natural
Gennination, growth, photosynthesis and translocation of carbon in tropical tree species: a comparative study and the influence of natural shade. Light has been recognized as a major factor in species replacement during secondary sucession in forests. The degree of shade tolerance may be important in detennining successional sequences, since these are condit
Publicado em: 1996
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6. Testing Genotypic and Phenotypic Resistance in Human Immunodeficiency Virus Type 1 Isolates of Clade B and Other Clades from Children Failing Antiretroviral Therapy
The emergence of resistance to antiretroviral drugs is a major obstacle to the successful treatment of human immunodeficiency virus type 1 (HIV-1)-infected patients. In this work, we correlate clinical and virological trends such as viral load (VL) and CD4 counts to genotypic and phenotypic antiretroviral (ARV) resistance profiles of HIV-1 isolates from the
American Society for Microbiology.
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7. Global changes and animal phenotypic responses: melanin-based plumage redness of scops owls increased with temperature and rainfall during the last century
The ecological effects of global climate changes include shifts of species' distribution and changes in migration strategies and phenotype. Colour polymorphism, which can be envisaged as a species' evolutionary response to alternating conditions or to a wide range of habitats, may be affected by climate changes as well. The scops owl (Otus scops) shows two m
The Royal Society.
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8. Dynamics of adaptation and diversification: a 10,000-generation experiment with bacterial populations.
We followed evolutionary change in 12 populations of Escherichia coli propagated for 10,000 generations in identical environments. Both morphology (cell size) and fitness (measured in competition with the ancestor) evolved rapidly for the first 2000 generations or so after the populations were introduced into the experimental environment, but both were nearl
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9. Genetic and Environmental Responses to Temperature of Drosophila Melanogaster from a Latitudinal Cline
Field-collected Drosophila melanogaster from 19 populations in Eastern Australia were measured for body size traits, and the measurements were compared with similar ones on flies from the same populations reared under standard laboratory conditions. Wild caught flies were smaller, and latitudinal trends in size were greater. Reduced size was caused by fewer
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10. New genes with roles in the C. elegans embryo revealed using RNAi of ovary-enriched ORFeome clones
Several RNA interference (RNAi)-based functional genomic projects have been performed in Caenorhabditis elegans to identify genes required during embryogenesis. These studies have demonstrated that the ovary is enriched for transcripts essential for the first cell divisions. However, comparing RNAi results suggests that many genes involved in embryogenesis h
Cold Spring Harbor Laboratory Press.
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11. Measurement of motility of Helicobacter pylori, Campylobacter jejuni, and Escherichia coli by real time computer tracking using the Hobson BacTracker.
AIMS: (1) To make precise measurements and comparisons of various aspects of motility of three gastrointestinal pathogens, Helicobacter pylori, Campylobacter jejuni, and Escherichia coli, in log phase growth; (2) to provide background information on motility data to study the influence of pH, viscosity, and chemotactic factors, thereby gaining a better under
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12. Viability and Recovery of Peripheral Blood Mononuclear Cells Cryopreserved for up to 12 Years in a Multicenter Study
The Multicenter AIDS Cohort Study (MACS), an ongoing prospective study of the natural history of human immunodeficiency virus (HIV), has stored biologic specimens, including peripheral blood mononuclear cells (PBMC), from 5,622 participants for up to 12 years. The purpose of the present analysis was to evaluate the quality of the PBMC in the MACS repository
American Society for Microbiology.