Genetic diversity assessment of the indigenous goat population of Benin using microsatellite markers

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AuteurWHANNOU, HABIB RAINIER VIHOTOGBE
AuteurSPANOGHE, MARTIN
AuteurGUIGUIGBAZA KOSSIGAN DAYO, CHARLES
AuteurDEMBLON, DOMINIQUE
AuteurLANTERBECQ, DEBORAH
AuteurDOSSA, LUC HIPPOLYTE
Date d'ajout2026-06-02T16:06:57Z
Date de disponibilite2026-06-02T16:06:57Z
Date de publication2023
ResumeImproved knowledge of the diversity within and among local animal populations is increasingly necessary for their sustainable management. Accordingly, this study assessed the genetic diversity and structure of the indigenous goat population of Benin. Nine hundred and fifty-four goats were sampled across the three vegetation zones of Benin [i.e., Guineo-Congolese zone (GCZ), Guineo-Sudanian zone (GSZ), and Sudanian zone (SZ)] and genotyped with 12 multiplexed microsatellite markers. The genetic diversity and structure of the indigenous goat population of Benin were examined using the usual genetic indices (number of alleles Na, expected and observed heterozygosities He and Ho, Fixation index FST, coefficient of genetic differentiation GST), and three different methods of structure assessment [Bayesian admixture model in STRUCTURE, self-organizing map (SOM), and discriminant analysis of principal components (DAPC)]. The mean values of Na (11.25), He (0.69), Ho (0.66), FST (0.012), and GST (0.012) estimated in the indigenous Beninese goat population highlighted great genetic diversity. STRUCTURE and SOM results showed the existence of two distinct goat groups (Djallonké and Sahelian) with high crossbreeding effects. Furthermore, DAPC distinguished four clusters within the goat population descending from the two ancestry groups. Clusters 1 and 3 (most individuals from GCZ) respectively showed a mean Djallonké ancestry proportion of 73.79% and 71.18%, whereas cluster 4 (mainly of goats from SZ and some goats of GSZ) showed a mean Sahelian ancestry proportion of 78.65%. Cluster 2, which grouped almost all animals from the three zones, was also of Sahelian ancestry but with a high level of interbreeding, as shown by the mean membership proportion of only 62.73%. It is therefore urgent to develop community management programs and selection schemes for the main goat types to ensure the sustainability of goat production in Benin.
DOI10.3389/fgene.2023.1079048
Autre identifiantBECDB-15556
URIhttps://dspace.uac.bj/handle/123456789/13173
Languefr
Fait partie deFrontiers in Genetics
SujetSmall ruminants
Sujetgenetic differentiation
Sujetmolecular genetic characterization
TitreGenetic diversity assessment of the indigenous goat population of Benin using microsatellite markers
TypeArticle

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