Research Article

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L. Luo; D.H. Li; X.P. Li; S.C. Zhang; C.F. Yan; J.F. Wu; Y.H. Qi; J. Zhao; L. Luo; D.H. Li; X.P. Li; S.C. Zhang; C.F. Yan; J.F. Wu; Y.H. Qi; J. Zhao; L. Luo; D.H. Li; X.P. Li; S.C. Zhang; C.F. Yan; J.F. Wu; Y.H. Qi; J. Zhao
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The objective of this study was to sequence part of the exon 1 in the melatonin receptor 1A gene (MTRN1A) in buffaloes to detect a novel polymorphism with which to associate reproductive characteristics, such as age at first birth and the interval between births, in buffaloes from the northeastern region of the State of Pará (Brazil). Buffalo hair samples (77) were collected from ... more

E.M. Barbosa; B.B. Souza; R.C. Guimarães; J.S.N. Azevedo; E.C. Gonçalves; H.F.L. Ribeiro; S.T.Rolim Filho; S. Filho
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Amazon; Buffaloes; Exon 1; Melatonin; Reproduction characteristics; SNP

The objective of this study was to sequence part of the exon 1 in the melatonin receptor 1A gene (MTRN1A) in buffaloes to detect a novel polymorphism with which to associate reproductive characteristics, such as age at first birth and the interval between births, in buffaloes from the northeastern region of the State of Pará (Brazil). Buffalo hair samples (77) were collected from ... more

E.M. Barbosa; B.B. Souza; R.C. Guimarães; J.S.N. Azevedo; E.C. Gonçalves; H.F.L. Ribeiro; S.T.Rolim Filho; S. Filho; E.M. Barbosa; B.B. Souza; R.C. Guimarães; J.S.N. Azevedo; E.C. Gonçalves; H.F.L. Ribeiro; S.T.Rolim Filho; S. Filho
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Melanocortin-4 receptor (MC4R) is associated with feed intake, growth, fatness, and carcass composition in many domestic animals. The aim of this study was to evaluate the association of single nucleotide polymorphisms (SNPs) in MC4R with milk production traits in water buffalo. Eight SNPs were identified by direct polymerase chain reaction sequencing of samples from 18 ... more

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GABAA receptors are chloride channels in the brain that are activated by binding with g-aminobutyric acid (GABA). The cDNA sequences of GABAA receptor subunits from two strains of mice with different sensitivities to isoflurane were compared to identify nucleotide mutations. Included 80 mice from two strains with different sensitivities to isoflurane on C57BL/6 ... more

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Melatonin; PCR-RFLP; Reproduction; Selection; SNP

Buffalo farming in Brazil is increasing, as is the challenge of identifying molecular markers that will improve productivity. Therefore, the aim of this study was to analyze single nucleotide polymorphisms of the receptor gene for the hormone melatonin in buffaloes from northern Brazil by polymerase chain reactions (PCRs) and restriction fragment length polymorphism assays. The PCR ... more

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Bovine respiratory disease; Feedlot; Finishing; SNP

The objective of the present study was to evaluate single nucleotide polymorphisms (SNPs) located in two quantitative trait locus (QTL) regions (BTA 6 and BTA 20) that are associated with bovine respiratory disease (BRD). A population of 323 crossbred steers sired by five purebred sire breeds during 2010-2013 (Angus, Braford, Braunvieh, Charolais, and Simmental) were evaluated for BRD ... more

S.L. Miller; S. Mizell; R. Walker; T. Page; M.D. Garcia; S.L. Miller; S. Mizell; R. Walker; T. Page; M.D. Garcia
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Blanco Orejinegro; Creole cattle; Growth traits; Romosinuano; SNP

Colombian creole cattle have important adaptation traits related to heat tolerance and reproductive and productive efficiency. Romosinuano (ROMO) and Blanco Orejinegro (BON) are the most common breeds used by Colombian cattle breeders. Growth traits are of prime importance in these animals, which are mainly raised for beef production. Genes encoding growth hormone, growth hormone receptor ... more

R. Martínez; J.F. Rocha; D. Bejarano; Y. Gómez; Y. Abuabara; J. Gallego; R. Martínez; J.F. Rocha; D. Bejarano; Y. Gómez; Y. Abuabara; J. Gallego
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Water buffaloes (Bubalus bubalis) are quite well adapted to climatic conditions in the Amazon, and in this biome, they are noted for the considerable amount of meat and milk they produce and how hard they are able to work. Because of a lack of research dedicated to improving the rearing of buffaloes in the Amazon, the objective of this study was to genetically characterize the ... more

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