Morphological variability within the indigenous sheep population of Benin.

Knowledge of both the genetic diversity and geographical distribution of animal genetic resources is a prerequisite for their sustainable utilization, improvement and conservation. The present study was undertaken to explore the current morphological variability within the sheep population in Benin...

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Autores principales:	Habib Rainier Vihotogbe Whannou, Cossi Ulriche Afatondji, Maurice Cossi Ahozonlin, Martin Spanoghe, Deborah Lanterbecq, Dominique Demblon, Marcel Romuald Benjamin Houinato, Luc Hippolyte Dossa
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/9bed94ffd9c44b35ab4a93b2d96f58db
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spelling	oai:doaj.org-article:9bed94ffd9c44b35ab4a93b2d96f58db2021-12-02T20:16:47ZMorphological variability within the indigenous sheep population of Benin.1932-620310.1371/journal.pone.0258761https://doaj.org/article/9bed94ffd9c44b35ab4a93b2d96f58db2021-01-01T00:00:00Zhttps://doi.org/10.1371/journal.pone.0258761https://doaj.org/toc/1932-6203Knowledge of both the genetic diversity and geographical distribution of animal genetic resources is a prerequisite for their sustainable utilization, improvement and conservation. The present study was undertaken to explore the current morphological variability within the sheep population in Benin as a prelude for their molecular characterization. From November 2018 to February 2020, 25 quantitative linear body measurements and 5 qualitative physical traits were recorded on 1240 adult ewes from the 10 phytogeographic zones that comprise the three vegetation zones of Benin. Fourteen morphological indices were calculated based on the linear body measurements. The collected data were first analyzed using multiple comparisons of least-square means (LSmeans), followed by generalized linear model (GLM) procedures, to explore the relationships among the measured morphometric traits and the 10 phytogeographic zones. Next, the presence of any genetic sub-populations was examined using multivariate analytical methods, including canonical discriminant analysis (CDA) and ascending hierarchical clustering (AHC). Univariate analyses indicated that all quantitative linear body measurements varied significantly (P<0.05) across the phytogeographic zones. The highest values (LSmean± standard error) of withers height (68.3±0.47 cm), sternum height (46.0±0.35 cm), and rump height (68.8±0.47 cm) were recorded in the Mekrou-Pendjari zone, the drier phytogeographic zone in the North, whereas the lowest values, 49.2±0.34, 25.9±0.26, and 52.0±0.35 cm, respectively, were recorded in the Pobe zone in the South. Multivariate analyses revealed the prevalence of four distinct sheep sub-populations in Benin. The sub-population from the South could be assimilated to the short-legged and that from the North to the West African long-legged sheep. The two other sub-populations were intermediate and closer to the crossbreeds or another short-legged sub-breed. The proportion of individuals correctly classified in their group of origin was approximately 74%. These results uncovered a spatial morphological variation in the Beninese sheep population along a South-North phytogeographic gradient.Habib Rainier Vihotogbe WhannouCossi Ulriche AfatondjiMaurice Cossi AhozonlinMartin SpanogheDeborah LanterbecqDominique DemblonMarcel Romuald Benjamin HouinatoLuc Hippolyte DossaPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 16, Iss 10, p e0258761 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Habib Rainier Vihotogbe Whannou Cossi Ulriche Afatondji Maurice Cossi Ahozonlin Martin Spanoghe Deborah Lanterbecq Dominique Demblon Marcel Romuald Benjamin Houinato Luc Hippolyte Dossa Morphological variability within the indigenous sheep population of Benin.
description	Knowledge of both the genetic diversity and geographical distribution of animal genetic resources is a prerequisite for their sustainable utilization, improvement and conservation. The present study was undertaken to explore the current morphological variability within the sheep population in Benin as a prelude for their molecular characterization. From November 2018 to February 2020, 25 quantitative linear body measurements and 5 qualitative physical traits were recorded on 1240 adult ewes from the 10 phytogeographic zones that comprise the three vegetation zones of Benin. Fourteen morphological indices were calculated based on the linear body measurements. The collected data were first analyzed using multiple comparisons of least-square means (LSmeans), followed by generalized linear model (GLM) procedures, to explore the relationships among the measured morphometric traits and the 10 phytogeographic zones. Next, the presence of any genetic sub-populations was examined using multivariate analytical methods, including canonical discriminant analysis (CDA) and ascending hierarchical clustering (AHC). Univariate analyses indicated that all quantitative linear body measurements varied significantly (P<0.05) across the phytogeographic zones. The highest values (LSmean± standard error) of withers height (68.3±0.47 cm), sternum height (46.0±0.35 cm), and rump height (68.8±0.47 cm) were recorded in the Mekrou-Pendjari zone, the drier phytogeographic zone in the North, whereas the lowest values, 49.2±0.34, 25.9±0.26, and 52.0±0.35 cm, respectively, were recorded in the Pobe zone in the South. Multivariate analyses revealed the prevalence of four distinct sheep sub-populations in Benin. The sub-population from the South could be assimilated to the short-legged and that from the North to the West African long-legged sheep. The two other sub-populations were intermediate and closer to the crossbreeds or another short-legged sub-breed. The proportion of individuals correctly classified in their group of origin was approximately 74%. These results uncovered a spatial morphological variation in the Beninese sheep population along a South-North phytogeographic gradient.
format	article
author	Habib Rainier Vihotogbe Whannou Cossi Ulriche Afatondji Maurice Cossi Ahozonlin Martin Spanoghe Deborah Lanterbecq Dominique Demblon Marcel Romuald Benjamin Houinato Luc Hippolyte Dossa
author_facet	Habib Rainier Vihotogbe Whannou Cossi Ulriche Afatondji Maurice Cossi Ahozonlin Martin Spanoghe Deborah Lanterbecq Dominique Demblon Marcel Romuald Benjamin Houinato Luc Hippolyte Dossa
author_sort	Habib Rainier Vihotogbe Whannou
title	Morphological variability within the indigenous sheep population of Benin.
title_short	Morphological variability within the indigenous sheep population of Benin.
title_full	Morphological variability within the indigenous sheep population of Benin.
title_fullStr	Morphological variability within the indigenous sheep population of Benin.
title_full_unstemmed	Morphological variability within the indigenous sheep population of Benin.
title_sort	morphological variability within the indigenous sheep population of benin.
publisher	Public Library of Science (PLoS)
publishDate	2021
url	https://doaj.org/article/9bed94ffd9c44b35ab4a93b2d96f58db
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Morphological variability within the indigenous sheep population of Benin.

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