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Selection for litter size components: a critical review

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العنوان: Selection for litter size components: a critical review
المؤلفون: Perez Enciso, Miguel, Bidanel, J. P.
بيانات النشر: BioMed Central
سنة النشر: 2016
المجموعة: Universitat de Lleida: Repositori Obert UdL
مصطلحات موضوعية: Litter size, Mice, Number of ova shed
الوصف: The measurement of component variables such as the number of ova shed (OR) and its inclusion in a linear index with litter size (LS) or prenatal survival has been suggested in order to accelerate genetic progress for LS. Despite optimistic theoretical predictions, however, in no selection experiment has the advantage of including OR in an index as compared to direct selection for LS been convincingly demonstrated. A literature survey shows no clear evidence of changes in genetic parameters with selection. By contrast, genetic drift may suffice to explain the less than expected usefulness of measuring OR, although it is not necessarily the sole cause. It is shown that an approximate figure of how much can be gained by measuring OR relative to direct selection for LS is given by (1+(J!Ls/(J!oR)1/2 with mass selection, where y is the phenotypic variance. Nonetheless, the size of the experiment needed to test this prediction is likely to be very large.
نوع الوثيقة: article in journal/newspaper
اللغة: English
تدمد: 0999-193X
Relation: Reproducció del document publicat a https://doi.org/10.1051/gse:19970405; Genetics Selection Evolution, 1997, vol. 29, núm. 5, p. 483-496; http://hdl.handle.net/10459.1/49325; https://doi.org/10.1051/gse:19970405
DOI: 10.1051/gse:19970405
الاتاحة: http://hdl.handle.net/10459.1/49325
https://doi.org/10.1051/gse:19970405
Rights: cc-by (c) Perez Enciso et al., 1997 ; http://creativecommons.org/licenses/by/3.0/es/ ; info:eu-repo/semantics/openAccess
رقم الانضمام: edsbas.38519424
قاعدة البيانات: BASE
الوصف
تدمد:0999193X
DOI:10.1051/gse:19970405