Mitochondrial control region genetic diversity and maternal ancestry of a Brangus-Ibage cattle populations
dc.contributor.author | Henkes, Luiz Ernani | pt_BR |
dc.contributor.author | Silva Junior, Wilson Araujo da | pt_BR |
dc.contributor.author | Moraes, José Carlos Ferrugem de | pt_BR |
dc.contributor.author | Weimer, Tania de Azevedo | pt_BR |
dc.date.accessioned | 2010-06-05T04:17:22Z | pt_BR |
dc.date.issued | 2005 | pt_BR |
dc.identifier.issn | 1415-4757 | pt_BR |
dc.identifier.uri | http://hdl.handle.net/10183/23373 | pt_BR |
dc.description.abstract | The genetic diversity of 277 nucleotides in the mitochondrial DNA control region (nt 15,964 to 16,240 in reference sequence) was analyzed in crossbreed beef cattle (Brangus-Ibage, 5/8 Bos primigenius taurus x 3/8 Bos primigenius indicus) as well as in some Nellore samples (B. p. indicus). Fifty-seven mutations were found in Brangus-Ibage comprising 18 haplotypes (haplotype diversity, h = 0.851 ± 0.041 and nucleotide diversity, ntd = 0.009 ± 0.006) and 66 in Nellore (h = 1.00 ± 0.27, ntd = 0.014 ± 0.012). These data indicated sequence identities of 99.6 and 92.1% between the B. p. taurus’ reference sequence and Brangus-Ibage and Nellore, respectively. The comparison of our data with sequence data for 612 individuals recovered from GenBank showed a total of 205 haplotypes defined by 99 polymorphic sites. Most of the variability (53%) was due to differentiation within breeds. The phylogenetic tree constructed using the neighbor-joining method showed clearly the well-known dichotomy between B. p. taurus and B. p. indicus. The Brangus-Ibage clustered with B. p. taurus lineages; however, the displacement of Nellore from B. p. indicus branch probably indicates a substantial B. p. taurus maternal ancestry in some Nellore samples (obtained from GenBank) and reflects the primarily male-driven introduction of this breed in Brazil. | en |
dc.format.mimetype | application/pdf | |
dc.language.iso | eng | pt_BR |
dc.relation.ispartof | Genetics and molecular biology. Ribeirão Preto. Vol. 28, no. 1 (Mar. 2005), p. 60-66 | pt_BR |
dc.rights | Open Access | en |
dc.subject | Bovine mtDNA | en |
dc.subject | Bovino | pt_BR |
dc.subject | Diversidade genética | pt_BR |
dc.subject | Maternal lineage | en |
dc.subject | Sequence analysis | en |
dc.subject | Beef cattle | en |
dc.subject | Genetic diversity | en |
dc.title | Mitochondrial control region genetic diversity and maternal ancestry of a Brangus-Ibage cattle populations | pt_BR |
dc.type | Artigo de periódico | pt_BR |
dc.identifier.nrb | 000514837 | pt_BR |
dc.type.origin | Nacional | pt_BR |
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