Y cromossome of chianina breed from Brazil
Autor(a) principal: | |
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Data de Publicação: | 2000 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | por |
Título da fonte: | Brazilian Journal of Veterinary Research and Animal Science |
Texto Completo: | https://www.revistas.usp.br/bjvras/article/view/5823 |
Resumo: | There were studied the karyotypes of 95 purebred Chianina bulls, distributed among 19 cattle farms in five Brazilian states. The objective was to investigate the incidence of individuals carring an acrocentric Y chromosome, typical of Bos taurus indicus breeds, in view of speculations that Indian breeds might have contributed to the formation of Chianina. All individual showed the Bos taurus taurus Y chromosome. The centromeric index obtained was 43.91%, which allowed us to classify the centromere of this chromosome as medially located. There were also studied 29 purebred Chianina bulls with the objective of verifying the presence of intraracial polymorphism at the Y chromosome. The centromeric index and relative size of the Y chromosome were determined. The lenght of the X chromosome served as a basis for estimating the relative size of Y. Analysis of variance showed differences among bulls only in the relative size of Y, no differences being detected in the centromeric index. We conclude that this polymorphism indicates the Chianina breed may have received contributions from other breeds in the remote past, or it may also indicate the possibility of more recent crosses. |
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Brazilian Journal of Veterinary Research and Animal Science |
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Y cromossome of chianina breed from BrazilO cromossomo Y na raça Chianina no BrasilCromossomo YBovinosCariótiposGado ChianinoY chromosomeBovineKaryotypesChianinaThere were studied the karyotypes of 95 purebred Chianina bulls, distributed among 19 cattle farms in five Brazilian states. The objective was to investigate the incidence of individuals carring an acrocentric Y chromosome, typical of Bos taurus indicus breeds, in view of speculations that Indian breeds might have contributed to the formation of Chianina. All individual showed the Bos taurus taurus Y chromosome. The centromeric index obtained was 43.91%, which allowed us to classify the centromere of this chromosome as medially located. There were also studied 29 purebred Chianina bulls with the objective of verifying the presence of intraracial polymorphism at the Y chromosome. The centromeric index and relative size of the Y chromosome were determined. The lenght of the X chromosome served as a basis for estimating the relative size of Y. Analysis of variance showed differences among bulls only in the relative size of Y, no differences being detected in the centromeric index. We conclude that this polymorphism indicates the Chianina breed may have received contributions from other breeds in the remote past, or it may also indicate the possibility of more recent crosses.Foram cariotipados 95 touros puros de origem, da raça Chianina, ditribuidos em 19 empresas pastoris, em 5 estados brasileiros. O objetivo foi investigar a incidência de indivíduos portadores de cromossomo Y acrocêntrico, típico das raças de Bos taurus indicus, face às especulações de que as raças indianas poderiam ter contribuido para a formação do Chianina. Todos os indivíduos avaliados mostraram o cromossomo Y de Bos taurrus taurus. O índice centromérico obtido foi de 43,91%, o que permitiu classificar o centrômero deste cromossomo como localizado na região mediana. Foram avaliados também 29 touros com o objetivo de verificar a presença do polimorfismo intraracial do cromossomo Y. O índice centromérico e o tamanho relativo do Y foi determinado. O tamanho do cromossomo X serviu como base para estimar o tamano relativo do Y. A análise de variância mostrou diferenças entre touros apenas no tamanho relativo do Y, sendo que o índice centromérico não difereiu entre os mesmos. Concluimos que este polimorfismo indica que a raça Chianina pode ter recebido contribuição de outras raças em passado remoto ou pode também indicar a possibilidade de cruzamentos mais recentes.Universidade de São Paulo. Faculdade de Medicina Veterinária e Zootecnia2000-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://www.revistas.usp.br/bjvras/article/view/582310.1590/S1413-95962000000300013Brazilian Journal of Veterinary Research and Animal Science; Vol. 37 Núm. 3 (2000); 249-252Brazilian Journal of Veterinary Research and Animal Science; Vol. 37 No. 3 (2000); 249-252Brazilian Journal of Veterinary Research and Animal Science; v. 37 n. 3 (2000); 249-252Brazilian Journal of Veterinary Research and Animal Science; V. 37 N. 3 (2000); 249-2521678-44561413-9596reponame:Brazilian Journal of Veterinary Research and Animal Scienceinstname:Faculdade de Medicina Veterinária e Zootecnia da Universidade de São Paulo (FMVZ-USP)instacron:USPporhttps://www.revistas.usp.br/bjvras/article/view/5823/62477Rocha, Gilberto Pedroso daJorge, WilhamPolastre, Rinaldoinfo:eu-repo/semantics/openAccess2020-06-23T04:41:30Zoai:revistas.usp.br:article/5823Revistahttps://www.revistas.usp.br/bjvrasPUBhttps://www.revistas.usp.br/bjvras/oaibjvras@usp.br1413-95961413-9596opendoar:https://www.revistas.usp.br/bjvras/index2023-01-12T16:42:24.224746Brazilian Journal of Veterinary Research and Animal Science - Faculdade de Medicina Veterinária e Zootecnia da Universidade de São Paulo (FMVZ-USP)false |
dc.title.none.fl_str_mv |
Y cromossome of chianina breed from Brazil O cromossomo Y na raça Chianina no Brasil |
title |
Y cromossome of chianina breed from Brazil |
spellingShingle |
Y cromossome of chianina breed from Brazil Rocha, Gilberto Pedroso da Cromossomo Y Bovinos Cariótipos Gado Chianino Y chromosome Bovine Karyotypes Chianina |
title_short |
Y cromossome of chianina breed from Brazil |
title_full |
Y cromossome of chianina breed from Brazil |
title_fullStr |
Y cromossome of chianina breed from Brazil |
title_full_unstemmed |
Y cromossome of chianina breed from Brazil |
title_sort |
Y cromossome of chianina breed from Brazil |
author |
Rocha, Gilberto Pedroso da |
author_facet |
Rocha, Gilberto Pedroso da Jorge, Wilham Polastre, Rinaldo |
author_role |
author |
author2 |
Jorge, Wilham Polastre, Rinaldo |
author2_role |
author author |
dc.contributor.author.fl_str_mv |
Rocha, Gilberto Pedroso da Jorge, Wilham Polastre, Rinaldo |
dc.subject.por.fl_str_mv |
Cromossomo Y Bovinos Cariótipos Gado Chianino Y chromosome Bovine Karyotypes Chianina |
topic |
Cromossomo Y Bovinos Cariótipos Gado Chianino Y chromosome Bovine Karyotypes Chianina |
description |
There were studied the karyotypes of 95 purebred Chianina bulls, distributed among 19 cattle farms in five Brazilian states. The objective was to investigate the incidence of individuals carring an acrocentric Y chromosome, typical of Bos taurus indicus breeds, in view of speculations that Indian breeds might have contributed to the formation of Chianina. All individual showed the Bos taurus taurus Y chromosome. The centromeric index obtained was 43.91%, which allowed us to classify the centromere of this chromosome as medially located. There were also studied 29 purebred Chianina bulls with the objective of verifying the presence of intraracial polymorphism at the Y chromosome. The centromeric index and relative size of the Y chromosome were determined. The lenght of the X chromosome served as a basis for estimating the relative size of Y. Analysis of variance showed differences among bulls only in the relative size of Y, no differences being detected in the centromeric index. We conclude that this polymorphism indicates the Chianina breed may have received contributions from other breeds in the remote past, or it may also indicate the possibility of more recent crosses. |
publishDate |
2000 |
dc.date.none.fl_str_mv |
2000-01-01 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
https://www.revistas.usp.br/bjvras/article/view/5823 10.1590/S1413-95962000000300013 |
url |
https://www.revistas.usp.br/bjvras/article/view/5823 |
identifier_str_mv |
10.1590/S1413-95962000000300013 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.none.fl_str_mv |
https://www.revistas.usp.br/bjvras/article/view/5823/62477 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Universidade de São Paulo. Faculdade de Medicina Veterinária e Zootecnia |
publisher.none.fl_str_mv |
Universidade de São Paulo. Faculdade de Medicina Veterinária e Zootecnia |
dc.source.none.fl_str_mv |
Brazilian Journal of Veterinary Research and Animal Science; Vol. 37 Núm. 3 (2000); 249-252 Brazilian Journal of Veterinary Research and Animal Science; Vol. 37 No. 3 (2000); 249-252 Brazilian Journal of Veterinary Research and Animal Science; v. 37 n. 3 (2000); 249-252 Brazilian Journal of Veterinary Research and Animal Science; V. 37 N. 3 (2000); 249-252 1678-4456 1413-9596 reponame:Brazilian Journal of Veterinary Research and Animal Science instname:Faculdade de Medicina Veterinária e Zootecnia da Universidade de São Paulo (FMVZ-USP) instacron:USP |
instname_str |
Faculdade de Medicina Veterinária e Zootecnia da Universidade de São Paulo (FMVZ-USP) |
instacron_str |
USP |
institution |
USP |
reponame_str |
Brazilian Journal of Veterinary Research and Animal Science |
collection |
Brazilian Journal of Veterinary Research and Animal Science |
repository.name.fl_str_mv |
Brazilian Journal of Veterinary Research and Animal Science - Faculdade de Medicina Veterinária e Zootecnia da Universidade de São Paulo (FMVZ-USP) |
repository.mail.fl_str_mv |
bjvras@usp.br |
_version_ |
1797051555206135808 |