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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: Whannou, Habib Rainier Vihotogbe, Afatondji, Cossi Ulriche, Ahozonlin, Maurice Cossi, Spanoghe, Martin, Lanterbecq, Deborah, Demblon, Dominique, Houinato, Marcel Romuald Benjamin, Dossa, Luc Hippolyte
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Public Library of Science 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8525752/
https://www.ncbi.nlm.nih.gov/pubmed/34665825
http://dx.doi.org/10.1371/journal.pone.0258761
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author Whannou, Habib Rainier Vihotogbe
Afatondji, Cossi Ulriche
Ahozonlin, Maurice Cossi
Spanoghe, Martin
Lanterbecq, Deborah
Demblon, Dominique
Houinato, Marcel Romuald Benjamin
Dossa, Luc Hippolyte
author_facet Whannou, Habib Rainier Vihotogbe
Afatondji, Cossi Ulriche
Ahozonlin, Maurice Cossi
Spanoghe, Martin
Lanterbecq, Deborah
Demblon, Dominique
Houinato, Marcel Romuald Benjamin
Dossa, Luc Hippolyte
author_sort Whannou, Habib Rainier Vihotogbe
collection PubMed
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.
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spelling pubmed-85257522021-10-20 Morphological variability within the indigenous sheep population of Benin Whannou, Habib Rainier Vihotogbe Afatondji, Cossi Ulriche Ahozonlin, Maurice Cossi Spanoghe, Martin Lanterbecq, Deborah Demblon, Dominique Houinato, Marcel Romuald Benjamin Dossa, Luc Hippolyte PLoS One Research Article 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. Public Library of Science 2021-10-19 /pmc/articles/PMC8525752/ /pubmed/34665825 http://dx.doi.org/10.1371/journal.pone.0258761 Text en © 2021 Whannou et al https://creativecommons.org/licenses/by/4.0/This is an open access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
spellingShingle Research Article
Whannou, Habib Rainier Vihotogbe
Afatondji, Cossi Ulriche
Ahozonlin, Maurice Cossi
Spanoghe, Martin
Lanterbecq, Deborah
Demblon, Dominique
Houinato, Marcel Romuald Benjamin
Dossa, Luc Hippolyte
Morphological variability within the indigenous sheep population of Benin
title 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_short Morphological variability within the indigenous sheep population of Benin
title_sort morphological variability within the indigenous sheep population of benin
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8525752/
https://www.ncbi.nlm.nih.gov/pubmed/34665825
http://dx.doi.org/10.1371/journal.pone.0258761
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