Brown Swiss cattle cytogenetic analysis
At 1985, a Brown Swiss herd from the Institute of Animal Science and Pastures, APTA/ SAA was cytogenetically analyzed and 1/29 Robertsonian translocation was observed. Such anomaly is related to fertility reduction. Quimeric abnormality such as 60,XX/60,XY in freemartin females. This study aimed to...
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| Format: | Article |
| Language: | English |
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Instituto de Zootecnia
2010-02-01
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| Series: | Boletim de Indústria Animal |
| Subjects: | |
| Online Access: | http://revistas.bvs-vet.org.br/bia/article/view/7209 |
| _version_ | 1818994882763554816 |
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| author | Rita Maria Ladeira Pires Cristina Corsi Dib Keila Maria Roncato Duarte Jackson Barros do Amaral Mariana Santos de Miranda |
| author_facet | Rita Maria Ladeira Pires Cristina Corsi Dib Keila Maria Roncato Duarte Jackson Barros do Amaral Mariana Santos de Miranda |
| author_sort | Rita Maria Ladeira Pires |
| collection | DOAJ |
| description | At 1985, a Brown Swiss herd from the Institute of Animal Science and Pastures, APTA/ SAA was cytogenetically analyzed and 1/29 Robertsonian translocation was observed. Such anomaly is related to fertility reduction. Quimeric abnormality such as 60,XX/60,XY in freemartin females. This study aimed to evaluate the incidence of cromossomic abnormalities in Brown Swiss animals, descending form herd karyotyped earlier. After 25 years, 127 animals (97 females and 30 males) from this herd were karyotyped by metaphases obtained from blood lymphocyte cultures. The typical diploid number 2n=60, 58 acrocentric and two X submetacentric chromosomes were confirmed in 94 females and in 27 males the sexual complement X and Y, both submetacentric, although from different sizes. Four females from gemelar parturition whit males were karyotyped. Three of them presented quimerism 60,XX/60,XY (one with 25.8% of female cells (XX) and 74.2% male cells (XY); one another with 10% of cells XX e 90% of XY and the third with 50% of each type) showing genital masculinization, diagnosed as freemartism and discarded from herd. Two hundred and five cells were analyzed from another female twins and only 60,XX cells were found, diagnosed as normal. His sister also were normal (60,XY). The another three males were also analyzed from gemelar heterosexual parturition, with karyotype 60,XX/60,XY. Cytogenetic analysis are a safe methodology for freemartin abnormalities identification in female bovine twins with male bovine, giving the opportunity of selecting fertile animals, avoiding loses in the management of sterile animals. Robertsonian’s translocation was not observed in any of the animals analyzed. |
| first_indexed | 2024-12-20T21:05:01Z |
| format | Article |
| id | doaj.art-78d1b4ddf67244b1b35caad9d4131ebd |
| institution | Directory Open Access Journal |
| issn | 0067-9615 1981-4100 |
| language | English |
| last_indexed | 2024-12-20T21:05:01Z |
| publishDate | 2010-02-01 |
| publisher | Instituto de Zootecnia |
| record_format | Article |
| series | Boletim de Indústria Animal |
| spelling | doaj.art-78d1b4ddf67244b1b35caad9d4131ebd2022-12-21T19:26:37ZengInstituto de ZootecniaBoletim de Indústria Animal0067-96151981-41002010-02-016721511556415Brown Swiss cattle cytogenetic analysisRita Maria Ladeira Pires0Cristina Corsi Dib1Keila Maria Roncato Duarte2Jackson Barros do Amaral3Mariana Santos de Miranda4Secretaria de Agricultura e Abastecimento do Estado de São Paulo, Agência Paulista de Tecnologia dos Agronegócios, Instituto de Zootecnia, Centro de Pesquisa e Desenvolvimento em Genética e Reprodução Animal, Laboratório de Biotecnologia Aplicada à Produção Animal, Nova Odessa, SPSecretaria de Agricultura e Abastecimento do Estado de São Paulo, Agência Paulista de Tecnologia dos Agronegócios, Instituto de Zootecnia, Centro de Pesquisa e Desenvolvimento em Genética e Reprodução Animal, Laboratório de Biotecnologia Aplicada à Produção Animal, Nova Odessa, SPSecretaria de Agricultura e Abastecimento do Estado de São Paulo, Agência Paulista de Tecnologia dos Agronegócios, Instituto de Zootecnia, Centro de Pesquisa e Desenvolvimento em Forragicultura e Pastagens, Nova Odessa, SPSecretaria de Agricultura e Abastecimento do Estado de São Paulo, Agência Paulista de Tecnologia dos Agronegócios, Instituto de Zootecnia, Centro de Pesquisa e Desenvolvimento em Genética e Reprodução Animal, Laboratório de Biotecnologia Aplicada à Produção Animal, Nova Odessa, SPSecretaria de Agricultura e Abastecimento do Estado de São Paulo, Agência Paulista de Tecnologia dos Agronegócios, Instituto de Zootecnia, Centro de Análise e Pesquisa Tecnológica do Agronégocio de Bovinos de Leite Nova Odessa, SPAt 1985, a Brown Swiss herd from the Institute of Animal Science and Pastures, APTA/ SAA was cytogenetically analyzed and 1/29 Robertsonian translocation was observed. Such anomaly is related to fertility reduction. Quimeric abnormality such as 60,XX/60,XY in freemartin females. This study aimed to evaluate the incidence of cromossomic abnormalities in Brown Swiss animals, descending form herd karyotyped earlier. After 25 years, 127 animals (97 females and 30 males) from this herd were karyotyped by metaphases obtained from blood lymphocyte cultures. The typical diploid number 2n=60, 58 acrocentric and two X submetacentric chromosomes were confirmed in 94 females and in 27 males the sexual complement X and Y, both submetacentric, although from different sizes. Four females from gemelar parturition whit males were karyotyped. Three of them presented quimerism 60,XX/60,XY (one with 25.8% of female cells (XX) and 74.2% male cells (XY); one another with 10% of cells XX e 90% of XY and the third with 50% of each type) showing genital masculinization, diagnosed as freemartism and discarded from herd. Two hundred and five cells were analyzed from another female twins and only 60,XX cells were found, diagnosed as normal. His sister also were normal (60,XY). The another three males were also analyzed from gemelar heterosexual parturition, with karyotype 60,XX/60,XY. Cytogenetic analysis are a safe methodology for freemartin abnormalities identification in female bovine twins with male bovine, giving the opportunity of selecting fertile animals, avoiding loses in the management of sterile animals. Robertsonian’s translocation was not observed in any of the animals analyzed.http://revistas.bvs-vet.org.br/bia/article/view/7209anomalia cromossômicabovinos gêmeos heterossexuaiscariótipoquimerismo 60,XX/60,XY |
| spellingShingle | Rita Maria Ladeira Pires Cristina Corsi Dib Keila Maria Roncato Duarte Jackson Barros do Amaral Mariana Santos de Miranda Brown Swiss cattle cytogenetic analysis Boletim de Indústria Animal anomalia cromossômica bovinos gêmeos heterossexuais cariótipo quimerismo 60,XX/60,XY |
| title | Brown Swiss cattle cytogenetic analysis |
| title_full | Brown Swiss cattle cytogenetic analysis |
| title_fullStr | Brown Swiss cattle cytogenetic analysis |
| title_full_unstemmed | Brown Swiss cattle cytogenetic analysis |
| title_short | Brown Swiss cattle cytogenetic analysis |
| title_sort | brown swiss cattle cytogenetic analysis |
| topic | anomalia cromossômica bovinos gêmeos heterossexuais cariótipo quimerismo 60,XX/60,XY |
| url | http://revistas.bvs-vet.org.br/bia/article/view/7209 |
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