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Registro Completo |
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Biblioteca(s): |
Embrapa Territorial. |
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Data corrente: |
31/05/2010 |
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Data da última atualização: |
02/06/2017 |
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Tipo da produção científica: |
Orientação de Tese de Pós-Graduação |
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Autoria: |
MANGABEIRA, J. A. de C. |
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Afiliação: |
JOAO ALFREDO DE CARVALHO MANGABEIRA, CNPM. |
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Título: |
Serviços ecossistêmicos e trajetória de capitalização agrícola: o caso de Machadinho D'Oeste-RO. |
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Ano de publicação: |
2010 |
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Fonte/Imprenta: |
2010. |
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Páginas: |
162 f. |
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Idioma: |
Português |
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Notas: |
Tese (Doutorado em Desenvolvimento Econômico) - Instituto de Economia, Universidade Estadual de Campinas, Campinas. |
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Conteúdo: |
O objetivo deste trabalho é o de traçar a tipologia dos produtores rurasi do município de Machadinho D'Oeste - RO, oriundos de um projeto de assentamento do Incra, quanto ao seu nível de acumulação de capital, durante o período de 1986 a 2008, no sentido de definir os fatores que levaram aos diferentes níveis de capitalização desses produtores, bem como avaliar o papel dos serviços ambientais nesta trajetória. |
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Palavras-Chave: |
Analise fatorial; Asistemas agrícolas; Assentamentos rurais; Economia ambiental. |
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Thesagro: |
Agricultura Familiar. |
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Categoria do assunto: |
B Sociologia Rural |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/29025/1/MangabeiraJoaoAlfredodeCarvalho-D.pdf
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Marc: |
LEADER 01086nam a2200193 a 4500
001 1854211
005 2017-06-02
008 2010 bl uuuu m 00u1 u #d
100 1 $aMANGABEIRA, J. A. de C.
245 $aServiços ecossistêmicos e trajetória de capitalização agrícola$bo caso de Machadinho D'Oeste-RO.
260 $a2010.$c2010
300 $a162 f.
500 $aTese (Doutorado em Desenvolvimento Econômico) - Instituto de Economia, Universidade Estadual de Campinas, Campinas.
520 $aO objetivo deste trabalho é o de traçar a tipologia dos produtores rurasi do município de Machadinho D'Oeste - RO, oriundos de um projeto de assentamento do Incra, quanto ao seu nível de acumulação de capital, durante o período de 1986 a 2008, no sentido de definir os fatores que levaram aos diferentes níveis de capitalização desses produtores, bem como avaliar o papel dos serviços ambientais nesta trajetória.
650 $aAgricultura Familiar
653 $aAnalise fatorial
653 $aAsistemas agrícolas
653 $aAssentamentos rurais
653 $aEconomia ambiental
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Registro original: |
Embrapa Territorial (CNPM) |
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Registro Completo
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Biblioteca(s): |
Embrapa Gado de Leite. |
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Data corrente: |
18/02/2016 |
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Data da última atualização: |
03/02/2024 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 2 |
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Autoria: |
MÉSZÁROS, G.; BOISON, S. A.; O'BRIEN, A. M. P.; FERENCAKOVIC, M.; CURIK, I.; SILVA, M. V. G. B.; UTSONOMIYA, Y. T.; GARCIA, J. F.; SÖLKNER, J. |
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Afiliação: |
Gábor Mészáros, University of Natural Resources and Life Sciences, Austria; Solomon A. Boison, University of Natural Resources and Life Sciences, Austria; Ana M. Pérez O'Brien, University of Natural Resources and Life Sciences, Austria; Maja Ferencakovic, University of Zagreb, Croatia; Ino Curik, University of Zagreb, Croatia; MARCOS VINICIUS GUALBERTO B SILVA, CNPGL; Yuri T. Utsunomiya, UNESP; Jose F. Garcia, UNESP; Johann Sölkner, University of Natural Resources and Life Sciences, Austria. |
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Título: |
Genomic analysis for managing small and endangered populations: a case study in Tyrol Grey cattle. |
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Ano de publicação: |
2015 |
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Fonte/Imprenta: |
Frontiers in Genetics, v. 6, p. 192-203, 2015. |
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Idioma: |
Inglês |
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Notas: |
Article 173. |
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Conteúdo: |
Analysis of genomic data is increasingly becoming part of the livestock industry. Therefore, the routine collection of genomic information would be an invaluable resource for effective management of breeding programs in small, endangered populations. The objective of the paper was to demonstrate how genomic data could be used to analyse (1) linkage disequlibrium (LD), LD decay and the effective population size (NeLD); (2) Inbreeding level and effective population size (NeROH) based on runs of homozygosity (ROH); (3) Prediction of genomic breeding values (GEBV) using small within-breed and genomic information from other breeds. The Tyrol Grey population was used as an example, with the goal to highlight the potential of genomic analyses for small breeds. In addition to our own results we discuss additional use of genomics to assess relatedness, admixture proportions, and inheritance of harmful variants. The example data set consisted of 218 Tyrol Grey bull genotypes, which were all available AI bulls in the population. After standard quality control restrictions 34,581 SNPs remained for the analysis. A separate quality control was applied to determine ROH levels based on Illumina GenCall and Illumina GenTrain scores, resulting into 211 bulls and 33,604 SNPs. LD was computed as the squared correlation coefficient between SNPs within a 10 mega base pair (Mb) region. ROHs were derived based on regions covering at least 4, 8, and 16 Mb, suggesting that animals had common ancestors approximately 12, 6, and 3 generations ago, respectively. The corresponding mean inbreeding coefficients (F ROH) were 4.0% for 4 Mb, 2.9% for 8 Mb and 1.6% for 16 Mb runs. With an average generation interval of 5.66 years, estimated NeROH was 125 (NeROH>16 Mb), 186 (NeROH>8 Mb) and 370 (NeROH>4 Mb) indicating strict avoidance of close inbreeding in the population. The LD was used as an alternative method to infer the population history and the Ne. The results show a continuous decrease in NeLD, to 780, 120, and 80 for 100, 10, and 5 generations ago, respectively. Genomic selection was developed for and is working well in large breeds. The same methodology was applied in Tyrol Grey cattle, using different reference populations. Contrary to the expectations, the accuracy of GEBVs with very small within breed reference populations were very high, between 0.13-0.91 and 0.12-0.63, when estimated breeding values and deregressed breeding values were used as pseudo-phenotypes, respectively. Subsequent analyses confirmed the high accuracies being a consequence of low reliabilities of pseudo-phenotypes in the validation set, thus being heavily influenced by parent averages. Multi-breed and across breed reference sets gave inconsistent and lower accuracies. Genomic information may have a crucial role in management of small breeds, even if its primary usage differs from that of large breeds. It allows to assess relatedness between individuals, trends in inbreeding and to take decisions accordingly. These decisions would be based on the real genome architecture, rather than conventional pedigree information, which can be missing or incomplete. We strongly suggest the routine genotyping of all individuals that belong to a small breed in order to facilitate the effective management of endangered livestock populations. MenosAnalysis of genomic data is increasingly becoming part of the livestock industry. Therefore, the routine collection of genomic information would be an invaluable resource for effective management of breeding programs in small, endangered populations. The objective of the paper was to demonstrate how genomic data could be used to analyse (1) linkage disequlibrium (LD), LD decay and the effective population size (NeLD); (2) Inbreeding level and effective population size (NeROH) based on runs of homozygosity (ROH); (3) Prediction of genomic breeding values (GEBV) using small within-breed and genomic information from other breeds. The Tyrol Grey population was used as an example, with the goal to highlight the potential of genomic analyses for small breeds. In addition to our own results we discuss additional use of genomics to assess relatedness, admixture proportions, and inheritance of harmful variants. The example data set consisted of 218 Tyrol Grey bull genotypes, which were all available AI bulls in the population. After standard quality control restrictions 34,581 SNPs remained for the analysis. A separate quality control was applied to determine ROH levels based on Illumina GenCall and Illumina GenTrain scores, resulting into 211 bulls and 33,604 SNPs. LD was computed as the squared correlation coefficient between SNPs within a 10 mega base pair (Mb) region. ROHs were derived based on regions covering at least 4, 8, and 16 Mb, suggesting that animals had common ancestor... Mostrar Tudo |
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Palavras-Chave: |
Breed management; Endangered breeds; Genomic selection; Runs of homozygosity; SNP chip. |
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Thesaurus NAL: |
linkage disequilibrium. |
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Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/139371/1/Cnpgl-2015-FrontGen-Genomic.pdf
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Marc: |
LEADER 04215naa a2200301 a 4500
001 2037600
005 2024-02-03
008 2015 bl uuuu u00u1 u #d
100 1 $aMÉSZÁROS, G.
245 $aGenomic analysis for managing small and endangered populations$ba case study in Tyrol Grey cattle.$h[electronic resource]
260 $c2015
500 $aArticle 173.
520 $aAnalysis of genomic data is increasingly becoming part of the livestock industry. Therefore, the routine collection of genomic information would be an invaluable resource for effective management of breeding programs in small, endangered populations. The objective of the paper was to demonstrate how genomic data could be used to analyse (1) linkage disequlibrium (LD), LD decay and the effective population size (NeLD); (2) Inbreeding level and effective population size (NeROH) based on runs of homozygosity (ROH); (3) Prediction of genomic breeding values (GEBV) using small within-breed and genomic information from other breeds. The Tyrol Grey population was used as an example, with the goal to highlight the potential of genomic analyses for small breeds. In addition to our own results we discuss additional use of genomics to assess relatedness, admixture proportions, and inheritance of harmful variants. The example data set consisted of 218 Tyrol Grey bull genotypes, which were all available AI bulls in the population. After standard quality control restrictions 34,581 SNPs remained for the analysis. A separate quality control was applied to determine ROH levels based on Illumina GenCall and Illumina GenTrain scores, resulting into 211 bulls and 33,604 SNPs. LD was computed as the squared correlation coefficient between SNPs within a 10 mega base pair (Mb) region. ROHs were derived based on regions covering at least 4, 8, and 16 Mb, suggesting that animals had common ancestors approximately 12, 6, and 3 generations ago, respectively. The corresponding mean inbreeding coefficients (F ROH) were 4.0% for 4 Mb, 2.9% for 8 Mb and 1.6% for 16 Mb runs. With an average generation interval of 5.66 years, estimated NeROH was 125 (NeROH>16 Mb), 186 (NeROH>8 Mb) and 370 (NeROH>4 Mb) indicating strict avoidance of close inbreeding in the population. The LD was used as an alternative method to infer the population history and the Ne. The results show a continuous decrease in NeLD, to 780, 120, and 80 for 100, 10, and 5 generations ago, respectively. Genomic selection was developed for and is working well in large breeds. The same methodology was applied in Tyrol Grey cattle, using different reference populations. Contrary to the expectations, the accuracy of GEBVs with very small within breed reference populations were very high, between 0.13-0.91 and 0.12-0.63, when estimated breeding values and deregressed breeding values were used as pseudo-phenotypes, respectively. Subsequent analyses confirmed the high accuracies being a consequence of low reliabilities of pseudo-phenotypes in the validation set, thus being heavily influenced by parent averages. Multi-breed and across breed reference sets gave inconsistent and lower accuracies. Genomic information may have a crucial role in management of small breeds, even if its primary usage differs from that of large breeds. It allows to assess relatedness between individuals, trends in inbreeding and to take decisions accordingly. These decisions would be based on the real genome architecture, rather than conventional pedigree information, which can be missing or incomplete. We strongly suggest the routine genotyping of all individuals that belong to a small breed in order to facilitate the effective management of endangered livestock populations.
650 $alinkage disequilibrium
653 $aBreed management
653 $aEndangered breeds
653 $aGenomic selection
653 $aRuns of homozygosity
653 $aSNP chip
700 1 $aBOISON, S. A.
700 1 $aO'BRIEN, A. M. P.
700 1 $aFERENCAKOVIC, M.
700 1 $aCURIK, I.
700 1 $aSILVA, M. V. G. B.
700 1 $aUTSONOMIYA, Y. T.
700 1 $aGARCIA, J. F.
700 1 $aSÖLKNER, J.
773 $tFrontiers in Genetics$gv. 6, p. 192-203, 2015.
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Embrapa Gado de Leite (CNPGL) |
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