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Colombian Creole horse breeds: same origin but different diversity Genet. Mol. Biol.
Jimenez,Ligia Mercedes; Mendez,Susy; Dunner,Susana; Cañón,Javier; Cortés,Óscar.
In order to understand the genetic ancestry and mitochondrial DNA (mtDNA) diversity of current Colombian horse breeds we sequenced a 364-bp fragment of the mitocondrial DNA D-loop in 116 animals belonging to five Spanish horse breeds and the Colombian Paso Fino and Colombian Creole cattle horse breeds. Among Colombian horse breeds, haplogroup D had the highest frequency (53%), followed by haplogroups A (19%), C (8%) and F (6%). The higher frequency of haplogroup D in Colombian horse breeds supports the theory of an ancestral Iberian origin for these breeds. These results also indicate that different selective pressures among the Colombian breeds could explain the relatively higher genetic diversity found in the Colombian Creole cattle horse when compared...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Colombian; Creole cattle horse; Horse breeds; Mitochondrial DNA; Paso Fino horse breed.
Ano: 2012 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572012000500013
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Effect of polymorphisms in the Slc11a1 coding region on resistance to brucellosis by macrophages in vitro and after challenge in two Bos breeds (Blanco Orejinegro and Zebu) Genet. Mol. Biol.
Martínez,Rodrigo; Dunner,Susana; Toro,Rubén; Tobón,Jaime; Gallego,Jaime; Cañón,Javier.
The resistance/susceptibility of selected cattle breeds to brucellosis was evaluated in an F1 population generated by crossing animals classified as resistant (R) and susceptible (S) (R x R, R x S, S x R, S x S) based on challenges in vitro and in vivo. The association between single nucleotide polymorphisms identified in the coding region of the Slc11a1 gene and resistance/susceptibility was estimated. The trait resistance or susceptibility to brucellosis, evaluated by a challenge in vitro, showed a high heritable component in terms of additive genetic variance (h² = 0.54 ± 0.11). In addition, there was a significant association (p < 0.05) between the control of bacterial survival and two polymorphisms (a 3'UTR and SNP4 located in exon 10). The...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Blanco Orejinegro Creole breed; Brahman breed; Brucella abortus; Genetic resistance; Zebu.
Ano: 2010 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572010000300014
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