Genomic breed composition of pure registered Brazilian Gir
Autor(a) principal: | |
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Data de Publicação: | 2022 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1007/s11250-022-03299-0 http://hdl.handle.net/11449/237885 |
Resumo: | Introduction Gir is a Bos indicus breed originally from India, first imported to Brazil in 1850. High-performance Dairy Gir has been systematically selected in Brazil from its arrival. Since the major phenotypic difference between Gir in India and Brazil is a higher milk production in the former, it is speculated that Brazilian Gir was strategically crossed with Holstein or another Bos taurus to improve milk yield. This study evaluated the purity of Brazilian Gir breed stocks from BASA Farms in Brazil, trying to identify possible admixture events with other cattle breeds based on DNA analysis. Materials and methods The population included 1061 pure registered individuals genotyped using two commercial platforms with 37 k and 25 k SNPs. Admixture analysis was performed individually to estimate levels of genomic composition derived from six different reference populations, three indicine and three taurine breeds. Results A Gir ancestry of 99% or higher was found for 94.2% of the population, while the remaining showed levels of non-Gir ancestry up to 6.8%. Only five individuals were identified with possible taurine ancestry, all of them exhibiting levels lower than 2%. The remaining non-Gir ancestry identified was derived from indicine breeds. The levels of admixture observed in the population were from low to non-detectable. No consistent patterns of admixture were observed indicating sustained introgression of taurine lines as means of genetic improvement. Conclusion According to these results, genetic improvement achieved by Brazilian Gir breeders is the result of within-breed selection methods applied intensively over the past five decades, rather than the result from sustained introgression. |
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Repositório Institucional da UNESP |
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Genomic breed composition of pure registered Brazilian GirBos indicusAdmixtureBreed purityIntrogressionIntroduction Gir is a Bos indicus breed originally from India, first imported to Brazil in 1850. High-performance Dairy Gir has been systematically selected in Brazil from its arrival. Since the major phenotypic difference between Gir in India and Brazil is a higher milk production in the former, it is speculated that Brazilian Gir was strategically crossed with Holstein or another Bos taurus to improve milk yield. This study evaluated the purity of Brazilian Gir breed stocks from BASA Farms in Brazil, trying to identify possible admixture events with other cattle breeds based on DNA analysis. Materials and methods The population included 1061 pure registered individuals genotyped using two commercial platforms with 37 k and 25 k SNPs. Admixture analysis was performed individually to estimate levels of genomic composition derived from six different reference populations, three indicine and three taurine breeds. Results A Gir ancestry of 99% or higher was found for 94.2% of the population, while the remaining showed levels of non-Gir ancestry up to 6.8%. Only five individuals were identified with possible taurine ancestry, all of them exhibiting levels lower than 2%. The remaining non-Gir ancestry identified was derived from indicine breeds. The levels of admixture observed in the population were from low to non-detectable. No consistent patterns of admixture were observed indicating sustained introgression of taurine lines as means of genetic improvement. Conclusion According to these results, genetic improvement achieved by Brazilian Gir breeders is the result of within-breed selection methods applied intensively over the past five decades, rather than the result from sustained introgression.BASA FarmsAgroPartners ConsultingAgroPartners Consulting, Aracatuba, SP, BrazilSao Paulo State Univ, Sch Vet Med Aracatuba, Dept Anim Prod & Hlth, UNESP, Aracatuba, SP, BrazilInt Atom Energy Agcy IAEA Collaborating Ctr Anim, Aracatuba, SP, BrazilBASA Farms, Leopoldina, MG, BrazilAcceligen, Eagan, MN 55121 USASao Paulo State Univ, Sch Vet Med Aracatuba, Dept Anim Prod & Hlth, UNESP, Aracatuba, SP, BrazilSpringerAgroPartners ConsultingUniversidade Estadual Paulista (UNESP)Int Atom Energy Agcy IAEA Collaborating Ctr AnimBASA FarmsAcceligenMilanesi, M. [UNESP]Obrien, A. M. PerezUtsunomiya, A. T.Feres, L. F.Sonstegard, T. S.Garcia, J. F. [UNESP]2022-11-30T13:47:38Z2022-11-30T13:47:38Z2022-10-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article7http://dx.doi.org/10.1007/s11250-022-03299-0Tropical Animal Health And Production. Dordrecht: Springer, v. 54, n. 5, 7 p., 2022.0049-4747http://hdl.handle.net/11449/23788510.1007/s11250-022-03299-0WOS:000855444100001Web of Sciencereponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengTropical Animal Health And Productioninfo:eu-repo/semantics/openAccess2024-09-04T19:15:25Zoai:repositorio.unesp.br:11449/237885Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestrepositoriounesp@unesp.bropendoar:29462024-09-04T19:15:25Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Genomic breed composition of pure registered Brazilian Gir |
title |
Genomic breed composition of pure registered Brazilian Gir |
spellingShingle |
Genomic breed composition of pure registered Brazilian Gir Milanesi, M. [UNESP] Bos indicus Admixture Breed purity Introgression |
title_short |
Genomic breed composition of pure registered Brazilian Gir |
title_full |
Genomic breed composition of pure registered Brazilian Gir |
title_fullStr |
Genomic breed composition of pure registered Brazilian Gir |
title_full_unstemmed |
Genomic breed composition of pure registered Brazilian Gir |
title_sort |
Genomic breed composition of pure registered Brazilian Gir |
author |
Milanesi, M. [UNESP] |
author_facet |
Milanesi, M. [UNESP] Obrien, A. M. Perez Utsunomiya, A. T. Feres, L. F. Sonstegard, T. S. Garcia, J. F. [UNESP] |
author_role |
author |
author2 |
Obrien, A. M. Perez Utsunomiya, A. T. Feres, L. F. Sonstegard, T. S. Garcia, J. F. [UNESP] |
author2_role |
author author author author author |
dc.contributor.none.fl_str_mv |
AgroPartners Consulting Universidade Estadual Paulista (UNESP) Int Atom Energy Agcy IAEA Collaborating Ctr Anim BASA Farms Acceligen |
dc.contributor.author.fl_str_mv |
Milanesi, M. [UNESP] Obrien, A. M. Perez Utsunomiya, A. T. Feres, L. F. Sonstegard, T. S. Garcia, J. F. [UNESP] |
dc.subject.por.fl_str_mv |
Bos indicus Admixture Breed purity Introgression |
topic |
Bos indicus Admixture Breed purity Introgression |
description |
Introduction Gir is a Bos indicus breed originally from India, first imported to Brazil in 1850. High-performance Dairy Gir has been systematically selected in Brazil from its arrival. Since the major phenotypic difference between Gir in India and Brazil is a higher milk production in the former, it is speculated that Brazilian Gir was strategically crossed with Holstein or another Bos taurus to improve milk yield. This study evaluated the purity of Brazilian Gir breed stocks from BASA Farms in Brazil, trying to identify possible admixture events with other cattle breeds based on DNA analysis. Materials and methods The population included 1061 pure registered individuals genotyped using two commercial platforms with 37 k and 25 k SNPs. Admixture analysis was performed individually to estimate levels of genomic composition derived from six different reference populations, three indicine and three taurine breeds. Results A Gir ancestry of 99% or higher was found for 94.2% of the population, while the remaining showed levels of non-Gir ancestry up to 6.8%. Only five individuals were identified with possible taurine ancestry, all of them exhibiting levels lower than 2%. The remaining non-Gir ancestry identified was derived from indicine breeds. The levels of admixture observed in the population were from low to non-detectable. No consistent patterns of admixture were observed indicating sustained introgression of taurine lines as means of genetic improvement. Conclusion According to these results, genetic improvement achieved by Brazilian Gir breeders is the result of within-breed selection methods applied intensively over the past five decades, rather than the result from sustained introgression. |
publishDate |
2022 |
dc.date.none.fl_str_mv |
2022-11-30T13:47:38Z 2022-11-30T13:47:38Z 2022-10-01 |
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 |
http://dx.doi.org/10.1007/s11250-022-03299-0 Tropical Animal Health And Production. Dordrecht: Springer, v. 54, n. 5, 7 p., 2022. 0049-4747 http://hdl.handle.net/11449/237885 10.1007/s11250-022-03299-0 WOS:000855444100001 |
url |
http://dx.doi.org/10.1007/s11250-022-03299-0 http://hdl.handle.net/11449/237885 |
identifier_str_mv |
Tropical Animal Health And Production. Dordrecht: Springer, v. 54, n. 5, 7 p., 2022. 0049-4747 10.1007/s11250-022-03299-0 WOS:000855444100001 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Tropical Animal Health And Production |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
7 |
dc.publisher.none.fl_str_mv |
Springer |
publisher.none.fl_str_mv |
Springer |
dc.source.none.fl_str_mv |
Web of Science 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 |
repositoriounesp@unesp.br |
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1810021377943535616 |