Bovins d’Afrique de l’Ouest

Bovins d’Afrique de l’Ouest

Arnaud Stéphane Rayangnéwend Tapsoba

87,14 €
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Editorial:
KS OmniScriptum Publishing
Año de edición:
2024
Materia
Genética (no médica)
ISBN:
9786206722717
87,14 €
IVA incluido
Disponible

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L’Afrique de l’Ouest présente une diversité zoogénétique notable, illustrée par les taurins trypanotolérants (Bos taurus). Cependant, l’introduction des Zébus (Bos indicus) a modifié le patrimoine génétique des races locales, notamment les taurins. Cette situation est préoccupante car peu d’études évaluent les niveaux d’introgression des taurins dans la région. L’objectif principal de cette étude est de mettre en évidence les indices morphologiques et génétiques d’introgression au sein des races bovines du Burkina Faso et de les comparer à celles de pays d’Afrique de l’Ouest. L’étude combine des analyses morphométriques et moléculaires des bovins du Burkina Faso, du Bénin, du Niger et du Mali, pour évaluer les flux géniques, la diversité génétique et les niveaux d’introgression à l’aide de marqueurs microsatellites. En 2014, une structuration marquée des populations taurines au Burkina Faso a été observée, suivie en 2018 par une homogénéisation due à une forte introgression des gènes zébus. Les analyses moléculaires indiquent une introgression des zébus, variant entre 20 et 50%, avec une diversité génétique notable, ce phénomène étant également présent au Bénin, Niger et Mali.

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