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 | Acesso ao texto completo restrito à biblioteca da Embrapa Caprinos e Ovinos. Para informações adicionais entre em contato com cnpc.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Caprinos e Ovinos. |
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Data corrente: |
17/02/2020 |
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Data da última atualização: |
01/12/2020 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
MONTENEGRO, A. R.; SILVA, L. P. da; LOBO, R. N. B. |
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Afiliação: |
ASSIS RUBENS MONTENEGRO, Universidade Federal do Ceará (UFC) - Fortaleza, CE, Brazil; LUCIANO PINHEIRO DA SILVA, Universidade Federal do Ceará (UFC) - Fortaleza, CE, Brazil; RAIMUNDO NONATO BRAGA LOBO, CNPC. |
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Título: |
Effect of different mating systems on population structure and genetic progress of a simulated small flock. |
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Ano de publicação: |
2019 |
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Fonte/Imprenta: |
International Journal of Environmental Sciences and Natural Resources, v. 21, n. 1, e556051, 2019. |
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DOI: |
10.19080/IJESNR.2019.21.556051 |
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Idioma: |
Inglês |
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Conteúdo: |
Abstract: Strategies to promote genetic progress or preserve genetic diversity in small populations may change due to population size. Higher inbreeding coefficients are associated to the use of breeding values predicted by mixed model methodology, which tends to score better animals within the best families. The reduced effective population size makes herds more susceptible to genetic drift and inbred matings. We compared three methodologies/software on simulated data that reproduced small-closed populations: Mate Selection (evolutionary differential), Gencont (Lagrange Multipliers) and SGRmate (linear programming). Algorithms optimized the objective function in order to achieve the higher genetic progress, but with an inbreeding coefficient of less than 10%, selecting the necessary number of sires and forming the reproductive pairs, except for Gencont, whose objective function was only to minimize the coancestry. All software generated populations with similar genetic progress. Mate Selection generated populations with the highest levels of inbreeding coefficients, similar to RANDOM, which presented best controlled mating between relatives. Gencont produced populations with intermediate levels of inbreeding. SGRmate maintained lowest levels of inbreeding due to higher number of sires selected and equal proportionality in combination of the pairs. Use of linear programming (SGRmate) was more efficient in maintaining the genetic diversity of small-closed populations |
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Palavras-Chave: |
Animal population; Breeding programs; Differential evolutionary algorithm; Mating optimization; Optimal genetic contribution; Optimization methods. |
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Thesaurus Nal: |
Animal genetics; Computer software; Linear programming; Selection criteria. |
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Categoria do assunto: |
G Melhoramento Genético |
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Marc: |
LEADER 02435naa a2200277 a 4500
001 2120327
005 2020-12-01
008 2019 bl uuuu u00u1 u #d
024 7 $a10.19080/IJESNR.2019.21.556051$2DOI
100 1 $aMONTENEGRO, A. R.
245 $aEffect of different mating systems on population structure and genetic progress of a simulated small flock.$h[electronic resource]
260 $c2019
520 $aAbstract: Strategies to promote genetic progress or preserve genetic diversity in small populations may change due to population size. Higher inbreeding coefficients are associated to the use of breeding values predicted by mixed model methodology, which tends to score better animals within the best families. The reduced effective population size makes herds more susceptible to genetic drift and inbred matings. We compared three methodologies/software on simulated data that reproduced small-closed populations: Mate Selection (evolutionary differential), Gencont (Lagrange Multipliers) and SGRmate (linear programming). Algorithms optimized the objective function in order to achieve the higher genetic progress, but with an inbreeding coefficient of less than 10%, selecting the necessary number of sires and forming the reproductive pairs, except for Gencont, whose objective function was only to minimize the coancestry. All software generated populations with similar genetic progress. Mate Selection generated populations with the highest levels of inbreeding coefficients, similar to RANDOM, which presented best controlled mating between relatives. Gencont produced populations with intermediate levels of inbreeding. SGRmate maintained lowest levels of inbreeding due to higher number of sires selected and equal proportionality in combination of the pairs. Use of linear programming (SGRmate) was more efficient in maintaining the genetic diversity of small-closed populations
650 $aAnimal genetics
650 $aComputer software
650 $aLinear programming
650 $aSelection criteria
653 $aAnimal population
653 $aBreeding programs
653 $aDifferential evolutionary algorithm
653 $aMating optimization
653 $aOptimal genetic contribution
653 $aOptimization methods
700 1 $aSILVA, L. P. da
700 1 $aLOBO, R. N. B.
773 $tInternational Journal of Environmental Sciences and Natural Resources$gv. 21, n. 1, e556051, 2019.
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Registro original: |
Embrapa Caprinos e Ovinos (CNPC) |
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Biblioteca |
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Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
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Status |
URL |
Voltar
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| Acesso ao texto completo restrito à biblioteca da Embrapa Hortaliças. Para informações adicionais entre em contato com biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Hortaliças. |
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Data corrente: |
01/03/2000 |
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Data da última atualização: |
01/03/2000 |
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Autoria: |
GIORDANO, L. de B. |
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Afiliação: |
EMBRAPA-CNPH, Brasilia, DF. |
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Título: |
Melhoramento de brassicas. |
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Ano de publicação: |
1983 |
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Fonte/Imprenta: |
Informe Agropecuario, Belo Horizonte, v.9, n.98, p.16-20, fev. 1983. |
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Idioma: |
Português |
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Palavras-Chave: |
Brassica oleracea gemmifera; Brassica oleracea gongylodes; Brassica oleracea italica; Brassica rapa rapa; Couve rabano; Couve-de-bruxelas; Couve-flor; Kohbrabi; Leaf mustard; Turnip. |
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Thesagro: |
Brassica Juncea; Brassica Oleracea Acephala; Brassica Oleracea Botrytis; Brassica Oleracea Capitata; Brócolo; Couve; Hibrido; Melhoramento; Mostarda; Nabo; Repolho; Seleção. |
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Thesaurus NAL: |
Brassica; broccoli; Brussels sprouts; cabbage; cauliflower; kale. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 01152naa a2200445 a 4500
001 1767123
005 2000-03-01
008 1983 bl uuuu u00u1 u #d
100 1 $aGIORDANO, L. de B.
245 $aMelhoramento de brassicas.
260 $c1983
650 $aBrassica
650 $abroccoli
650 $aBrussels sprouts
650 $acabbage
650 $acauliflower
650 $akale
650 $aBrassica Juncea
650 $aBrassica Oleracea Acephala
650 $aBrassica Oleracea Botrytis
650 $aBrassica Oleracea Capitata
650 $aBrócolo
650 $aCouve
650 $aHibrido
650 $aMelhoramento
650 $aMostarda
650 $aNabo
650 $aRepolho
650 $aSeleção
653 $aBrassica oleracea gemmifera
653 $aBrassica oleracea gongylodes
653 $aBrassica oleracea italica
653 $aBrassica rapa rapa
653 $aCouve rabano
653 $aCouve-de-bruxelas
653 $aCouve-flor
653 $aKohbrabi
653 $aLeaf mustard
653 $aTurnip
773 $tInforme Agropecuario, Belo Horizonte$gv.9, n.98, p.16-20, fev. 1983.
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