Genome-Wide Association Study for genetics differences between the batida and picada gaits in Mangalarga Marchador equine

• Grant number: 16/17834-0
• Support Opportunities: Scholarships in Brazil - Master
• Start date: December 01, 2016
• End date: August 31, 2018
• Field of knowledge: Agronomical Sciences - Animal Husbandry - Genetics and Improvement of Domestic Animals
• Agreement: Coordination of Improvement of Higher Education Personnel (CAPES)
• Principal Investigator: Júlio Cesar de Carvalho Balieiro
• Grantee: Fernando de Oliveira Bussiman
• Host Institution: Faculdade de Zootecnia e Engenharia de Alimentos (FZEA). Universidade de São Paulo (USP). Pirassununga , SP, Brazil

Abstract

The DMRT3 gene has been described as the major gene to serve in determining gait phenotype in several horse breeds. The A allele of SNP 22999655C>A of DMRT3 was appointed as responsible for this feature. In the Brazilian breed Mangalarga Marchador, which features two gait patterns with well-defined characteristics, AA and AC genotypes were associated with marcha picada and the CC genotype to marcha batida. Thus, in this race the A allele of the march was only related to a type of gait, marcha picada. In genome-wide association study (GWAS) case-control recently conducted in FMVZ, Unesp, Botucatu, it was possible to demonstrate that, contrary to what occurs with marcha picada, marcha batida appears to be controlled by more genes. However, due to the small number of animals used in this study (N = 48: marcha batida N = 28; marcha picada N = 20), it was not possible to identify genomic regions associated significantly with marcha batida. Based on the above, the main objective of this research will be carried out, from larger sample of animals, the prospect of genomic regions containing possible genes responsible for phenotype marcha batida in horses Mangalarga Marchador. They will be genotyped with Equine SNP70 BeadChip, 192 horses (96 march beat and chopped 96 march), duly recorded by the Genealogical Registry Service of the Brazilian Association of Mangalarga Marchador Breeders (ABCCMM). Thus, the GWAS case-control will be reappointed with 240 animals, and 124 marching beat and 116 bite march. Blood samples of the animals will be collected during the National Exhibition of the race, to be held in June 2017 in the city of Belo Horizonte-MG. The presence of full brothers will be avoided in the sample. (AU)

Scientific publications

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

BUSSIMAN, FERNANDO DE OLIVEIRA; E SILVA, FABYANO FONSECA; BUENO CARVALHO, RACHEL SANTOS; VENTURA, RICARDO VIEIRA; DE OLIVEIRA, HENRIQUE NUNES; ABREU SILVA, BARBARA DA CONCEICAO; FONSECA, MAYARA GONCALVES; DOS SANTOS, BRUNA APARECIDA; PEREIRA, GUILHERME LUIS; ELER, JOANIR PEREIRA; et al. Model comparisons for genetic evaluation of gait type in Mangalarga Marchador horses. LIVESTOCK SCIENCE, v. 239, SEP 2020. (16/17834-0, 16/19081-9)

BUSSIMAN, FERNANDO DE OLIVEIRA; DOS SANTOS, BRUNA APARECIDA; ABREU SILVA, BARBARA DA CONCEICAO; MAMANI MAMANI, GERARDO CORNELIO; GRIGOLETTO, LAIS; PEREIRA, GUILHERME LUIS; FERRAZ, GUILHERME DE CAMARGO; STERMAN FERRAZ, JOSE BENTO; MATTOS, ELISANGELA CHICARONI; ELER, JOANIR PEREIRA; et al. Genome-wide association study: Understanding the genetic basis of the gait type in Brazilian Mangalarga Marchador horses, a preliminary study. LIVESTOCK SCIENCE, v. 231, JAN 2020. (16/17834-0, 16/19081-9)

BUSSIMAN, F. O.; DOS SANTOS, B. A.; ABREU SILVA, B. C.; PEREZ, B. C.; PEREIRA, G. L.; CHARDULO, L. A. L.; ELER, J. P.; FERRAZ, J. B. S.; MATTOS, E. C.; CURI, R. A.; et al. Allelic and genotypic frequencies of the DMRT3 gene in the Brazilian horse breed Mangalarga Marchador and their association with types of gait. Genetics and Molecular Research, v. 18, n. 1, FEB 25 2019. (16/17834-0, 16/19081-9, 14/07566-2)

Academic Publications

(References retrieved automatically from State of São Paulo Research Institutions)

BUSSIMAN, Fernando de Oliveira. Genome-wide association study for the genetic differences between marcha batida and marcha picada gaits in Mangalarga Marchador equine. 2018. Master's Dissertation - Universidade de São Paulo (USP). Faculdade de Zootecnica e Engenharia de Alimentos (FZE/BT) Pirassununga.