Association between reproductive traits and four microsatellites in Brangus-Ibagé cattle
The aim of the present study was to verify associations between reproductive efficiency and four microsatellite markers located in synteny with genes involved in the regulation of reproductive mechanisms. A sample of 107 females from a Brangus Ibagé population (5/8 Aberdeen Angus x 3/8 Nelore) was c...
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| Format: | Article |
| Language: | English |
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Sociedade Brasileira de Genética
2005-03-01
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| Series: | Genetics and Molecular Biology |
| Subjects: | |
| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572005000100010 |
| _version_ | 1818096647636254720 |
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| author | João F.C. de Oliveira Jairo P. Neves Eric A. Almeida Clara Sabina Steigleder José Carlos F. Moraes Paulo Bayard D. Gonçalves Tania A. Weimer |
| author_facet | João F.C. de Oliveira Jairo P. Neves Eric A. Almeida Clara Sabina Steigleder José Carlos F. Moraes Paulo Bayard D. Gonçalves Tania A. Weimer |
| author_sort | João F.C. de Oliveira |
| collection | DOAJ |
| description | The aim of the present study was to verify associations between reproductive efficiency and four microsatellite markers located in synteny with genes involved in the regulation of reproductive mechanisms. A sample of 107 females from a Brangus Ibagé population (5/8 Aberdeen Angus x 3/8 Nelore) was characterized for ETH225 (D9S1) and MM12E6 (D9S20) microsatellites, mapped on chromosome 9, and HEL5 (D21S15) and AFZ1 (D21S37) on chromosome 21. Associations between the genetic markers and reproductive efficiency were determined by one-way analysis of variance using calving interval (CI), live weight at calving (LWC), live weight at first calving (LW1C) and live weight at second calving (LW2C) as dependent variables. The genotypes were classified according to allele size into homozygous for long alleles, homozygous for short alleles and heterozygous. A longer CI was observed for individuals homozygous for long alleles at the HEL5 locus compared with the others (p = 0.022). For the AFZ1 locus, an inverse correlation between allele size and calving interval was observed (p = 0.022), suggesting that homozygosity for long alleles at this microsatellite could be advantageous. Analysis of the combined effect of favorable genotypes at HEL5 and AFZ1 indicated that animals with unfavorable genotypes (homozygous for long alleles at HEL5 and homozygous for short alleles at AFZ1) presented a significantly longer CI (p = 0.003) when compared to the other genotypes. The ETH225 and MM12E6 systems did not present any association with CI. None of the systems studied showed any significant association with LWC, LW1C or LW2C. |
| first_indexed | 2024-12-10T23:07:57Z |
| format | Article |
| id | doaj.art-9fed4d28899c4caf8639847b508cbd0c |
| institution | Directory Open Access Journal |
| issn | 1415-4757 1678-4685 |
| language | English |
| last_indexed | 2024-12-10T23:07:57Z |
| publishDate | 2005-03-01 |
| publisher | Sociedade Brasileira de Genética |
| record_format | Article |
| series | Genetics and Molecular Biology |
| spelling | doaj.art-9fed4d28899c4caf8639847b508cbd0c2022-12-22T01:30:01ZengSociedade Brasileira de GenéticaGenetics and Molecular Biology1415-47571678-46852005-03-01281545910.1590/S1415-47572005000100010Association between reproductive traits and four microsatellites in Brangus-Ibagé cattleJoão F.C. de OliveiraJairo P. NevesEric A. AlmeidaClara Sabina SteiglederJosé Carlos F. MoraesPaulo Bayard D. GonçalvesTania A. WeimerThe aim of the present study was to verify associations between reproductive efficiency and four microsatellite markers located in synteny with genes involved in the regulation of reproductive mechanisms. A sample of 107 females from a Brangus Ibagé population (5/8 Aberdeen Angus x 3/8 Nelore) was characterized for ETH225 (D9S1) and MM12E6 (D9S20) microsatellites, mapped on chromosome 9, and HEL5 (D21S15) and AFZ1 (D21S37) on chromosome 21. Associations between the genetic markers and reproductive efficiency were determined by one-way analysis of variance using calving interval (CI), live weight at calving (LWC), live weight at first calving (LW1C) and live weight at second calving (LW2C) as dependent variables. The genotypes were classified according to allele size into homozygous for long alleles, homozygous for short alleles and heterozygous. A longer CI was observed for individuals homozygous for long alleles at the HEL5 locus compared with the others (p = 0.022). For the AFZ1 locus, an inverse correlation between allele size and calving interval was observed (p = 0.022), suggesting that homozygosity for long alleles at this microsatellite could be advantageous. Analysis of the combined effect of favorable genotypes at HEL5 and AFZ1 indicated that animals with unfavorable genotypes (homozygous for long alleles at HEL5 and homozygous for short alleles at AFZ1) presented a significantly longer CI (p = 0.003) when compared to the other genotypes. The ETH225 and MM12E6 systems did not present any association with CI. None of the systems studied showed any significant association with LWC, LW1C or LW2C.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572005000100010bovineIGF-I receptorestrogen receptorreproductive efficiency |
| spellingShingle | João F.C. de Oliveira Jairo P. Neves Eric A. Almeida Clara Sabina Steigleder José Carlos F. Moraes Paulo Bayard D. Gonçalves Tania A. Weimer Association between reproductive traits and four microsatellites in Brangus-Ibagé cattle Genetics and Molecular Biology bovine IGF-I receptor estrogen receptor reproductive efficiency |
| title | Association between reproductive traits and four microsatellites in Brangus-Ibagé cattle |
| title_full | Association between reproductive traits and four microsatellites in Brangus-Ibagé cattle |
| title_fullStr | Association between reproductive traits and four microsatellites in Brangus-Ibagé cattle |
| title_full_unstemmed | Association between reproductive traits and four microsatellites in Brangus-Ibagé cattle |
| title_short | Association between reproductive traits and four microsatellites in Brangus-Ibagé cattle |
| title_sort | association between reproductive traits and four microsatellites in brangus ibage cattle |
| topic | bovine IGF-I receptor estrogen receptor reproductive efficiency |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572005000100010 |
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