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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: |
01/08/1992 |
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Data da última atualização: |
14/11/2023 |
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Autoria: |
CUNNINGHAM, E. P.; MOEN, R. A.; GJEDREM, T. |
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Título: |
Restriction of selection indexes. |
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Ano de publicação: |
1969 |
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Fonte/Imprenta: |
Biometrics, v. 26, n. 1, p. 67-74, 1969. |
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DOI: |
https://doi.org/10.2307/2529045 |
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Idioma: |
Inglês |
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Conteúdo: |
A selection index may be restricted by requiring that the genetic changes it produces in one or more traits equal zero or some predetermined value, or are of specified sign. Retaining the equations of constraint explicitly in the system simplifies the index equations, facilitates the calculation of the `genetic cost' of each restriction, and gives the economic value needed to stabilise any trait under selection with an unrestricted index. The effect of gradual restriction of a particular trait on the index weighting factors and on the rate of gain for the aggregate genotype and its constituent traits can be readily plotted, and was nearly linear in several cases examined. |
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Thesagro: |
Índice de Seleção; Melhoramento. |
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Thesaurus Nal: |
Genetics; Selection index. |
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Categoria do assunto: |
G Melhoramento Genético |
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Marc: |
LEADER 01236naa a2200205 a 4500
001 1522063
005 2023-11-14
008 1969 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.2307/2529045$2DOI
100 1 $aCUNNINGHAM, E. P.
245 $aRestriction of selection indexes.$h[electronic resource]
260 $c1969
520 $aA selection index may be restricted by requiring that the genetic changes it produces in one or more traits equal zero or some predetermined value, or are of specified sign. Retaining the equations of constraint explicitly in the system simplifies the index equations, facilitates the calculation of the `genetic cost' of each restriction, and gives the economic value needed to stabilise any trait under selection with an unrestricted index. The effect of gradual restriction of a particular trait on the index weighting factors and on the rate of gain for the aggregate genotype and its constituent traits can be readily plotted, and was nearly linear in several cases examined.
650 $aGenetics
650 $aSelection index
650 $aÍndice de Seleção
650 $aMelhoramento
700 1 $aMOEN, R. A.
700 1 $aGJEDREM, T.
773 $tBiometrics$gv. 26, n. 1, p. 67-74, 1969.
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