TAILIEUCHUNG - Báo cáo sinh học: "A mating method accounting for inbreeding and multi-trait selection in dairy cattle populations"

Tuyển tập các báo cáo nghiên cứu về sinh học được đăng trên tạp chí sinh học quốc tế đề tài: A mating method accounting for inbreeding and multi-trait selection in dairy cattle populations | Genetics Selection Evolution BioMed Central Research A mating method accounting for inbreeding and multi-trait selection in dairy cattle populations Jean-Jacques Colleau 1 Kevin Tual2 Hervé de Preaumont2 and Didier Regaldo3 Open Access Address 1INRA UR337 Station de génétique quantitative et appliquée 78352 Jouy-en-Josas Cedex France 2Centre d Insémination Animale BP54 61382 L AIGLE Cedex France and 3Institut de l élevage Département Génétique 149 Rue de Bercy 75595 Paris Cedex 12 France Email Jean-Jacques Colleau - ugencjj@ Kevin Tual - Hervé de Preaumont - Didier Regaldo - Corresponding author Published 5 January 2009 Received 16 December 2008 Genetics Selection Evolution 2009 41 7 doi l297-9686-4l-7 Accepted 5 January 2009 This article is available from http content 4l l 7 2009 Colleau et al licensee BioMed Central Ltd. This is an Open Access article distributed under the terms of the Creative Commons Attribution License http licenses by which permits unrestricted use distribution and reproduction in any medium provided the original work is properly cited. Selection in dairy cattle populations usually takes into account both the breed profiles for many traits and their overall estimated breeding values EBV . This can result in effective contributions of breeding animals departing substantially from contributions optimised for saving future genetic variability. In this work we propose a mating method that considers not only inbreeding but also the detailed EBV of progeny or the EBV of sires in reference to acceptance thresholds. Penalties were defined for inbreeding and for inadequate EBV profiles. Relative reductions of penalties yielded by any mating design were expressed on a scale ranging from 0 to l. A value of 0 represented the average performance of random matings and a value of l represented the maximal

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