Breeding Goals
Mostrando 1-12 de 18 artigos, teses e dissertações.
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1. Breeding goals and economic values for Nellore cattle in a full-cycle production system
ABSTRACT. The objective of this study was to develop a bio-economic model for the estimation of economic values of economically important traits in a full-cycle beef cattle production system. The bio-economic model calculated economic values by simulating the impact of changes in the profit of the system consisting of a 1% increase in each trait of the breed
Acta Sci., Anim. Sci.. Publicado em: 25/02/2019
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2. Phenotypic and molecular characterization of apple (Malus × domestica Borkh) genetic resources in Greece
ABSTRACT: The phenotypic and genetic analysis of apple (Malus × domestica Borkh) genotypes is essential for breeding species. Information on the morphology and genetic structure of apple offers significant help for germplasm maintenance and selection of suitable material to breed superior cultivars. This study shows the results of an investigation on the mo
Sci. agric. (Piracicaba, Braz.). Publicado em: 2018-12
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3. Genetic gain estimated by different selection criteria in guava progenies
Abstract Guava plays an important role in Brazilian agribusiness. Among other goals, guava breeding programs aim to achieve more productive cultivars and improved fruit quality. Thus, the present study aimed to investigate genetic variability in full-sib progenies of Psidium guajava (guava) and estimate the genetic progress obtained from different selection
Bragantia. Publicado em: 29/09/2016
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4. Identification of selection signatures in livestock species
The identification of regions that have undergone selection is one of the principal goals of theoretical and applied evolutionary genetics. Such studies can also provide information about the evolutionary processes involved in shaping genomes, as well as physical and functional information about genes/genomic regions. Domestication followed by breed formatio
Genet. Mol. Biol.. Publicado em: 2014-06
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5. Breeding objectives and economic values for traits of low input family-based beef cattle production system in the State of Rio Grande do Sul
The objectives of this study were to define breeding objectives and derive economic weights for production traits in family-based beef cattle systems, assess the sensitivity of these weights to changes in market and husbandry indicators and estimate the expected genetic changes in the selection criteria proposed. Based on data from the production systems, fa
Revista Brasileira de Zootecnia. Publicado em: 2012-02
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6. Determinantes da expansão da bovinocultura na Amazônia Legal Mato-Grossense / The determinants of cattle herd expansion in the brazilian legal Amazon (Mato Grosso state)
While the growing demand for food has become a challenge to the productive sectors, the equal distribution of this production is one of the main concerns of the contemporary society. Following this trend, agricultural production has thrived, supported by research and technology. On the other hand, meat production still has room for improvement through divers
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 2012
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7. Proposição de índices de seleção em frangos de corte / Proposition of selection indexes in broilers
O presente estudo foi subdividido em duas partes: análises genéticas e análises econômicas. A primeira teve por objetivos definir modelos de avaliação genética para as características de desempenho e carcaça em uma linhagem comercial de frangos e estimar os parâmetros genéticos e fenotípicos para essas características. A segunda parte teve por o
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 19/08/2011
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8. Genomic selection in Eucalyptus: marker assisted selection coming to reality in forest trees.
Genomic selection (GS) involves selection decisions based on genomic breeding values estimated as the sum of the effects of genome-wide markers capturing most QTLs for the target trait(s). GS is revolutionizing breeding practice for complex trait in domestic animals. The same approach and concepts can be readily applied to forest tree breeding. Trees also ha
PLANT & ANIMAL GENOMES CONFERENCE. Publicado em: 2011
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9. Análises biométricas e mapeamento de QTLS para tolerância à seca em milho / Biometric analysis and mapping of QTLS for drought tolerance in maize
One of the major goals of crop improvement is the increase in agricultural productivity associated with the improvement for the consumption in human or animal feeding. These goals can be achieved through improvements in environmental conditions or by improving the genetic potential of populations. Recently, much has been discussed about global warming, clima
Publicado em: 2009
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10. Progresso genético para produtividade do feijoeiro no programa de melhoramento do Instituto Agronômico (IAC) entre 1989 e 2007 / Genetic gain for yield in the common beans breeding program at Agronomical Institute (IAC) from 1989 to 2007
The genetic breeding program of common beans at Instituto Agronômico (IAC) has released 38 cultivars to the present date, thus contributing to increase the average yield of the crop in Brazil and, mainly, in the state of São Paulo. In this context, the goal of the present work was to evaluate the genetic gains obtained in yield for common beans due to the
Publicado em: 2008
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11. Dialelic analysis and pungency in Capsicum chinense fruits / Análise dialélica e pungência dos frutos em Capsicum chinense
The production of peppers in Brasil has been increased substantially in the past years, being the southern and central-western the main producers. The breeding of Capsicum species aims mainly to obtain fruits with quality, high yield genotypes and plants resistant to the major diseases affecting the crop. Among the fruits characteristics, the pungency is one
Publicado em: 2007
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12. Fenologia de floração e polinização de espécies ornitófilas na Serra da Bodoquena, Mato Grosso do Sul, Brasil
Hummingbirds are the major group of vertebrate pollinators in the neotropical region and, at these sites, plants pollinated by these birds can account for 2-15% of angiosperm species. The goals of this study were: (i) to analyze the flowering phenology and pollination of ornitophilous species in two environments (forest gallery and Semi-deciduous forest) of
Publicado em: 2007