Geographical distribution of sheep breeds in Brazil and their relationship with climatic and environmental factors as risk classification for conservation
Autor(a) principal: | |
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Data de Publicação: | 2014 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UFRGS |
Texto Completo: | http://hdl.handle.net/10183/142293 |
Resumo: | Background: The aim of this study was to evaluate the distribution of sheep breeds in Brazil, correlate their occurrence with environmental factors and determine their risk for extinction. Methods: The localization of all flocks of purebred sheep (commerical and naturalised, hair and wool) in Brazil was spatialized in ARCGIS along with climatic (Thermal Humidity Index, precipitation, solar radiation, relative humidity) and physical environmental controls (altitude, pasture type). Data were analysed using analysis of variance, logisitic regression and cluster analyses. Distance matrices were constructed using longitude/latitude and those from environmental controls and these were correlated using Mantel test. Results: Santa Ines and Dorper were the most popular breeds with a countrywide distribution. Over 80% of most breeds occurred within 500 km of their midpoint which has implications for their conservation and vulnerability as those breeds with few flocks and restricted geographical distribution are at higher risk. This was especially evident for the naturalised breeds. Spatial distribution of breeds was highly correlated with environmental controls and two distinct clusters were found. Spatial distribution of breeds was highly correlated with environmental controls. Naturalised sheep breeds in Brazil tend to be more localized than commercial breeds which may mean they are at greater risk. Hair and wool sheep tend to occur in specific environments. Conclusions: Flocks in the center west and northeast tend to further away from the midpoint for the breed, making germplasm exchange, and therefore avoidance of inbreeding and their conservation, more difficult. |
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Pimentel, Concepta Margaret McManusHermuche, Potira MeirellesPaiva, Samuel RezendeMoraes, José Carlos Ferrugem deMelo, Cristiano Barros deMendes, Clayton2016-06-07T02:08:41Z20142196-288Xhttp://hdl.handle.net/10183/142293000988383Background: The aim of this study was to evaluate the distribution of sheep breeds in Brazil, correlate their occurrence with environmental factors and determine their risk for extinction. Methods: The localization of all flocks of purebred sheep (commerical and naturalised, hair and wool) in Brazil was spatialized in ARCGIS along with climatic (Thermal Humidity Index, precipitation, solar radiation, relative humidity) and physical environmental controls (altitude, pasture type). Data were analysed using analysis of variance, logisitic regression and cluster analyses. Distance matrices were constructed using longitude/latitude and those from environmental controls and these were correlated using Mantel test. Results: Santa Ines and Dorper were the most popular breeds with a countrywide distribution. Over 80% of most breeds occurred within 500 km of their midpoint which has implications for their conservation and vulnerability as those breeds with few flocks and restricted geographical distribution are at higher risk. This was especially evident for the naturalised breeds. Spatial distribution of breeds was highly correlated with environmental controls and two distinct clusters were found. Spatial distribution of breeds was highly correlated with environmental controls. Naturalised sheep breeds in Brazil tend to be more localized than commercial breeds which may mean they are at greater risk. Hair and wool sheep tend to occur in specific environments. Conclusions: Flocks in the center west and northeast tend to further away from the midpoint for the breed, making germplasm exchange, and therefore avoidance of inbreeding and their conservation, more difficult.application/pdfengBrazilian Journal of Science and Technology. [London]: SpringerOpen, 2014-. Vol. 1, 3 (2014), 15 p.OvinoPastagemLogistic regressionMantel correlationNaturalizedPasture typeTemperaturePrecipitationGeographical distribution of sheep breeds in Brazil and their relationship with climatic and environmental factors as risk classification for conservationEstrangeiroinfo:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da UFRGSinstname:Universidade Federal do Rio Grande do Sul (UFRGS)instacron:UFRGSORIGINAL000988383.pdf000988383.pdfTexto completo (inglês)application/pdf1406091http://www.lume.ufrgs.br/bitstream/10183/142293/1/000988383.pdfa050e13612e67f144548765a09294410MD51TEXT000988383.pdf.txt000988383.pdf.txtExtracted Texttext/plain45822http://www.lume.ufrgs.br/bitstream/10183/142293/2/000988383.pdf.txt3d59ee2e9f164ff3eeadaad17ccf63f0MD52THUMBNAIL000988383.pdf.jpg000988383.pdf.jpgGenerated Thumbnailimage/jpeg1925http://www.lume.ufrgs.br/bitstream/10183/142293/3/000988383.pdf.jpg79bdc3801b10b9f38fded5742ec2719aMD5310183/1422932021-09-18 04:42:53.39999oai:www.lume.ufrgs.br:10183/142293Repositório de PublicaçõesPUBhttps://lume.ufrgs.br/oai/requestopendoar:2021-09-18T07:42:53Repositório Institucional da UFRGS - Universidade Federal do Rio Grande do Sul (UFRGS)false |
dc.title.pt_BR.fl_str_mv |
Geographical distribution of sheep breeds in Brazil and their relationship with climatic and environmental factors as risk classification for conservation |
title |
Geographical distribution of sheep breeds in Brazil and their relationship with climatic and environmental factors as risk classification for conservation |
spellingShingle |
Geographical distribution of sheep breeds in Brazil and their relationship with climatic and environmental factors as risk classification for conservation Pimentel, Concepta Margaret McManus Ovino Pastagem Logistic regression Mantel correlation Naturalized Pasture type Temperature Precipitation |
title_short |
Geographical distribution of sheep breeds in Brazil and their relationship with climatic and environmental factors as risk classification for conservation |
title_full |
Geographical distribution of sheep breeds in Brazil and their relationship with climatic and environmental factors as risk classification for conservation |
title_fullStr |
Geographical distribution of sheep breeds in Brazil and their relationship with climatic and environmental factors as risk classification for conservation |
title_full_unstemmed |
Geographical distribution of sheep breeds in Brazil and their relationship with climatic and environmental factors as risk classification for conservation |
title_sort |
Geographical distribution of sheep breeds in Brazil and their relationship with climatic and environmental factors as risk classification for conservation |
author |
Pimentel, Concepta Margaret McManus |
author_facet |
Pimentel, Concepta Margaret McManus Hermuche, Potira Meirelles Paiva, Samuel Rezende Moraes, José Carlos Ferrugem de Melo, Cristiano Barros de Mendes, Clayton |
author_role |
author |
author2 |
Hermuche, Potira Meirelles Paiva, Samuel Rezende Moraes, José Carlos Ferrugem de Melo, Cristiano Barros de Mendes, Clayton |
author2_role |
author author author author author |
dc.contributor.author.fl_str_mv |
Pimentel, Concepta Margaret McManus Hermuche, Potira Meirelles Paiva, Samuel Rezende Moraes, José Carlos Ferrugem de Melo, Cristiano Barros de Mendes, Clayton |
dc.subject.por.fl_str_mv |
Ovino Pastagem |
topic |
Ovino Pastagem Logistic regression Mantel correlation Naturalized Pasture type Temperature Precipitation |
dc.subject.eng.fl_str_mv |
Logistic regression Mantel correlation Naturalized Pasture type Temperature Precipitation |
description |
Background: The aim of this study was to evaluate the distribution of sheep breeds in Brazil, correlate their occurrence with environmental factors and determine their risk for extinction. Methods: The localization of all flocks of purebred sheep (commerical and naturalised, hair and wool) in Brazil was spatialized in ARCGIS along with climatic (Thermal Humidity Index, precipitation, solar radiation, relative humidity) and physical environmental controls (altitude, pasture type). Data were analysed using analysis of variance, logisitic regression and cluster analyses. Distance matrices were constructed using longitude/latitude and those from environmental controls and these were correlated using Mantel test. Results: Santa Ines and Dorper were the most popular breeds with a countrywide distribution. Over 80% of most breeds occurred within 500 km of their midpoint which has implications for their conservation and vulnerability as those breeds with few flocks and restricted geographical distribution are at higher risk. This was especially evident for the naturalised breeds. Spatial distribution of breeds was highly correlated with environmental controls and two distinct clusters were found. Spatial distribution of breeds was highly correlated with environmental controls. Naturalised sheep breeds in Brazil tend to be more localized than commercial breeds which may mean they are at greater risk. Hair and wool sheep tend to occur in specific environments. Conclusions: Flocks in the center west and northeast tend to further away from the midpoint for the breed, making germplasm exchange, and therefore avoidance of inbreeding and their conservation, more difficult. |
publishDate |
2014 |
dc.date.issued.fl_str_mv |
2014 |
dc.date.accessioned.fl_str_mv |
2016-06-07T02:08:41Z |
dc.type.driver.fl_str_mv |
Estrangeiro info:eu-repo/semantics/article |
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2196-288X |
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000988383 |
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http://hdl.handle.net/10183/142293 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.ispartof.pt_BR.fl_str_mv |
Brazilian Journal of Science and Technology. [London]: SpringerOpen, 2014-. Vol. 1, 3 (2014), 15 p. |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
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application/pdf |
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