Population structure and genetic variability of a closed Jaffarabadi buffalo herd from Brazil
Autor(a) principal: | |
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Data de Publicação: | 2015 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://hdl.handle.net/11449/220397 |
Resumo: | Small closed herds could have signifi cant negative genetic consequences including small effective size, inbreeding depression and the loss of diversity through genetic drift. Here we evaluate the population structure and genetic variability of a closed Jaffarabadi herd through careful analysis of the pedigree. The herd was characterized by a high generation interval (10.17±5.43 years), small effective population size (10) and very low effective number of ancestors (7) and founders (8). Four ancestors explained 50% of the genetic variability in the population and the most representative ancestor contributed approximately 33% of the population genetic variability. Estimated inbreeding was moderate with a value of 4.22%. However, this may be underestimated because of the shallow pedigree. Based on our results we strongly recommend the introduction of new reproductive individuals, with lowest possible average relatedness coeffi cients with the herd, to reduce the deleterious effects associated with inbreeding and low levels of genetic variability. Moreover, immediate action should be implemented to increase effective population size and to reduce the generation interval. |
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Population structure and genetic variability of a closed Jaffarabadi buffalo herd from BrazilEffective sizeGeneration intervalInbreedingJaffarabadi buffaloPedigreeSmall closed herds could have signifi cant negative genetic consequences including small effective size, inbreeding depression and the loss of diversity through genetic drift. Here we evaluate the population structure and genetic variability of a closed Jaffarabadi herd through careful analysis of the pedigree. The herd was characterized by a high generation interval (10.17±5.43 years), small effective population size (10) and very low effective number of ancestors (7) and founders (8). Four ancestors explained 50% of the genetic variability in the population and the most representative ancestor contributed approximately 33% of the population genetic variability. Estimated inbreeding was moderate with a value of 4.22%. However, this may be underestimated because of the shallow pedigree. Based on our results we strongly recommend the introduction of new reproductive individuals, with lowest possible average relatedness coeffi cients with the herd, to reduce the deleterious effects associated with inbreeding and low levels of genetic variability. Moreover, immediate action should be implemented to increase effective population size and to reduce the generation interval.Universidade Estadual do Sudoeste da Bahia, Praça Primavera, Bairro PrimaveraUniversidade Estadual do Sudoeste da Bahia, Av: José Moreira Sobrinho S/NUniversidade Estadual PaulistaUniversity of MarylandUniversidade Federal do AlagoasUniversidade Estadual PaulistaUniversidade Estadual do Sudoeste da Bahia, Praça Primavera, Bairro PrimaveraUniversidade Estadual do Sudoeste da BahiaUniversidade Estadual Paulista (UNESP)University of MarylandUniversidade Federal do AlagoasFerraz, Paulo CostaMalhado, Carlos Henrique MendesRamos, Alcides Amorim [UNESP]Carneiro, Paulo Luiz SouzaCarrillo, José AdriánMalhado, Ana Claudia Mendes2022-04-28T19:01:11Z2022-04-28T19:01:11Z2015-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article197-207Buffalo Bulletin, v. 34, n. 2, p. 197-207, 2015.0125-6726http://hdl.handle.net/11449/2203972-s2.0-84934759015Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengBuffalo Bulletininfo:eu-repo/semantics/openAccess2022-04-28T19:01:11Zoai:repositorio.unesp.br:11449/220397Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T19:04:35.416615Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Population structure and genetic variability of a closed Jaffarabadi buffalo herd from Brazil |
title |
Population structure and genetic variability of a closed Jaffarabadi buffalo herd from Brazil |
spellingShingle |
Population structure and genetic variability of a closed Jaffarabadi buffalo herd from Brazil Ferraz, Paulo Costa Effective size Generation interval Inbreeding Jaffarabadi buffalo Pedigree |
title_short |
Population structure and genetic variability of a closed Jaffarabadi buffalo herd from Brazil |
title_full |
Population structure and genetic variability of a closed Jaffarabadi buffalo herd from Brazil |
title_fullStr |
Population structure and genetic variability of a closed Jaffarabadi buffalo herd from Brazil |
title_full_unstemmed |
Population structure and genetic variability of a closed Jaffarabadi buffalo herd from Brazil |
title_sort |
Population structure and genetic variability of a closed Jaffarabadi buffalo herd from Brazil |
author |
Ferraz, Paulo Costa |
author_facet |
Ferraz, Paulo Costa Malhado, Carlos Henrique Mendes Ramos, Alcides Amorim [UNESP] Carneiro, Paulo Luiz Souza Carrillo, José Adrián Malhado, Ana Claudia Mendes |
author_role |
author |
author2 |
Malhado, Carlos Henrique Mendes Ramos, Alcides Amorim [UNESP] Carneiro, Paulo Luiz Souza Carrillo, José Adrián Malhado, Ana Claudia Mendes |
author2_role |
author author author author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual do Sudoeste da Bahia, Praça Primavera, Bairro Primavera Universidade Estadual do Sudoeste da Bahia Universidade Estadual Paulista (UNESP) University of Maryland Universidade Federal do Alagoas |
dc.contributor.author.fl_str_mv |
Ferraz, Paulo Costa Malhado, Carlos Henrique Mendes Ramos, Alcides Amorim [UNESP] Carneiro, Paulo Luiz Souza Carrillo, José Adrián Malhado, Ana Claudia Mendes |
dc.subject.por.fl_str_mv |
Effective size Generation interval Inbreeding Jaffarabadi buffalo Pedigree |
topic |
Effective size Generation interval Inbreeding Jaffarabadi buffalo Pedigree |
description |
Small closed herds could have signifi cant negative genetic consequences including small effective size, inbreeding depression and the loss of diversity through genetic drift. Here we evaluate the population structure and genetic variability of a closed Jaffarabadi herd through careful analysis of the pedigree. The herd was characterized by a high generation interval (10.17±5.43 years), small effective population size (10) and very low effective number of ancestors (7) and founders (8). Four ancestors explained 50% of the genetic variability in the population and the most representative ancestor contributed approximately 33% of the population genetic variability. Estimated inbreeding was moderate with a value of 4.22%. However, this may be underestimated because of the shallow pedigree. Based on our results we strongly recommend the introduction of new reproductive individuals, with lowest possible average relatedness coeffi cients with the herd, to reduce the deleterious effects associated with inbreeding and low levels of genetic variability. Moreover, immediate action should be implemented to increase effective population size and to reduce the generation interval. |
publishDate |
2015 |
dc.date.none.fl_str_mv |
2015-01-01 2022-04-28T19:01:11Z 2022-04-28T19:01:11Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
Buffalo Bulletin, v. 34, n. 2, p. 197-207, 2015. 0125-6726 http://hdl.handle.net/11449/220397 2-s2.0-84934759015 |
identifier_str_mv |
Buffalo Bulletin, v. 34, n. 2, p. 197-207, 2015. 0125-6726 2-s2.0-84934759015 |
url |
http://hdl.handle.net/11449/220397 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Buffalo Bulletin |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
197-207 |
dc.source.none.fl_str_mv |
Scopus reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
_version_ |
1808129015715725312 |