Genomic selection experiment in Lacaune dairy sheep : Progeny test results of rams initially selected either on parent average or on genomic prediction / Guillaume G. Baloche  

Public ISBD Faire une suggestion d'achat Titre : Genomic selection experiment in Lacaune dairy sheep : Progeny test results of rams initially selected either on parent average or on genomic prediction Type de document : document électronique Auteurs : Guillaume G. Baloche, Auteur ; Jean-Michel Astruc, Auteur Editeur : American Society of Animal Science Année de publication : 2013 Note générale : 10. World Congress on Genetics Applied to Livestock Production (WCGALP) Langues : Anglais (eng) Catégories : 571 Physiologie générale et sujets connexes Physiology and related subjects Tags : dairy sheep  lacaune breed  genomic selection  experiment  [q-bio] Index. décimale : 571 Résumé : A genomic selection experiment was carried out for the AI dairy Lacaune rams born in 2011: within 46 sires, 200 and 128 sons have been progeny tested,respectively after usual parent average preselection (classical rams), or after a genomic preselection of around one third (genomic rams). The superiority of the genomic rams (GR) compared to classical rams (CR) for the total merit index (TMI) was underestimated by 58 % using BLUP versus using single-step GBLUP: the true breeding value superiority of GR compared to CR was estimated to 0.52 TMI standard deviation, so that only 24 % of GR were eliminated versus 48 % of CR according to the TMI threshold used to select the proven rams. En ligne : https://hal.inrae.fr/hal-02742682 Format de la ressource électronique : PDF Genomic selection experiment in Lacaune dairy sheep : Progeny test results of rams initially selected either on parent average or on genomic prediction [document électronique] / Guillaume G. Baloche, Auteur ; Jean-Michel Astruc, Auteur . - American Society of Animal Science, 2013. 10. World Congress on Genetics Applied to Livestock Production (WCGALP) Langues : Anglais (eng) Catégories : 571 Physiologie générale et sujets connexes Physiology and related subjects Tags : dairy sheep  lacaune breed  genomic selection  experiment  [q-bio] Index. décimale : 571 Résumé : A genomic selection experiment was carried out for the AI dairy Lacaune rams born in 2011: within 46 sires, 200 and 128 sons have been progeny tested,respectively after usual parent average preselection (classical rams), or after a genomic preselection of around one third (genomic rams). The superiority of the genomic rams (GR) compared to classical rams (CR) for the total merit index (TMI) was underestimated by 58 % using BLUP versus using single-step GBLUP: the true breeding value superiority of GR compared to CR was estimated to 0.52 TMI standard deviation, so that only 24 % of GR were eliminated versus 48 % of CR according to the TMI threshold used to select the proven rams. En ligne : https://hal.inrae.fr/hal-02742682 Format de la ressource électronique : PDF

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