Analyse gÃ©nÃ©tique de la morphologie des chÃ¨vres Saanen et Alpines franÃ§aises

A. PiacÃ¨re; E. Manfredi; P. Lahaye

Analyse gÃ©nÃ©tique de la morphologie des chÃ¨vres Saanen et Alpines franÃ§aises

In: Milking and milk production of dairy sheep and goats

Authors:

A. PiacÃ¨re

A. PiacÃ¨re Institut de lâElevage, DÃ©partement de GÃ©nÃ©tique, Identification et ContrÃ´le des Performances, 149 rue de Bercy, 75595 Paris CÃ©dex 12, France

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E. Manfredi

E. Manfredi Institut National de la Recherche Agronomique, Station dâAmÃ©lioration GÃ©nÃ©tique des Animaux, chemin de Borde Rouge, BP 26, 31327 Castanet-Tolosan, France

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, and

P. Lahaye

P. Lahaye CaprigÃ¨ne France, Agropole, route de Chauvigny, 86550 Mignaloux-Beauvoir, France

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Type:: Chapter

Pages:: 375â380

DOI:: https://doi.org/10.1163/9789004683877_079

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RÃ©sumÃ©

Un protocole expÃ©rimental incluant 3894 chÃ¨vres Saanen et Alpines issues de 230 pÃ¨res dâinsÃ©mination a permis dâÃ©tudier les facteurs de variation et les paramÃ¨tres gÃ©nÃ©tiques de 17 caractÃ¨res morphologiques. Les donnÃ©es ont Ã©tÃ© analysÃ©es avec un modÃ¨le animal incluant les effets fixÃ©s Ã¢ge, stade de lactation et quantitÃ© de lait produite au pointage, selon la mÃ©thode REML, avec une approche multicaractÃ¨re. Trois variables mesurÃ©es (tour de poitrine, longueur et diamÃ¨tre des trayons) prÃ©sentent une hÃ©ritabilitÃ© de Tordre de 0,40 Ã 0,50, la plupart des variables dÃ©crivant la mamelle ont des hÃ©ritabilitÃ©s de 0,20 Ã 0,30 et les variables concernant les membres de 0,05 Ã 0,20. Certaines variables prÃ©sentent de fortes corrÃ©lations gÃ©nÃ©tiques entre elles. Ces rÃ©sultats obtenus sur primipares nous permettent dâenvisager la mise au point dâune indexation sur certains caractÃ¨res, pour amorcer une sÃ©lection sur la morphologie en complÃ©ment de la sÃ©lection laitiÃ¨re.

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Milking and milk production of dairy sheep and goats

E-Book ISBN:: 9789004683877

Publisher:: Wageningen Academic

Print Publication Date:: 01 Jan 1999

Subjects
- Life Sciences
  - General
  - Animal & Veterinary

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Analyse gÃ©nÃ©tique de la morphologie des chÃ¨vres Saanen et Alpines franÃ§aises

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Milking and milk production of dairy sheep and goats

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