Marcadores snp asociados a terneza en dos músculos, Flexor Digitorum y Psoas Major, en avileña negra ibérica
- Ximena Quintero Arboleda 1
- MªJesús Carabaño 1
- Guillherme Venturini 2
- Cristina Meneses 1
- Julia Rueda 3
- Clara Díaz 1
- 1 INIA
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2
Universidade Estadual Paulista
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3
Universidad Complutense de Madrid
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- Jorge Hugo Calvo Lacosta
- Isabel Casasús Pueyo
- Margalida Joy Torrens
- Javier Álvarez Rodríguez
- Luis Varona Aguado
- Begoña Panea Doblao
- Carlos Calvete Margolles
- Joaquim Balcells Teres
Publisher: Asociación Interprofesional para el Desarrollo Agrario
ISBN: 978-84-695-7684-7, 978-84-695-7684-7
Year of publication: 2013
Volume: 2
Pages: 529-531
Congress: Jornadas sobre producción animal (15. 2013. Zaragoza)
Type: Conference paper
Abstract
This study aimed at identifying genetic markers associated with beef tenderness in two largely different muscles, Psoas major (PM) en Flexor digitorum (FD). A total of 397 Avileña-Negra Ibérica calves with genotypes for the Illumina Bovine SNP50 platform and measures of organoleptic tenderness (OT) and Warner-Blazter compression (WBC) participated in the study. A pre-selection of SNPs was carried out by determining the SNPs contained in 140 QTL regions previously identified as associated with beef tenderness in the Animal Genome UMD_3.1 database. A genome wide association study (GWAS) was then performed using QXpak 5.2. A model including place-year and length of fattening, age, place and season of slaughter, panel session and panelist (only for OT), one SNP at a time and the polygenic additive effect was used. A total of 4101 SNPs were pre-selected. The GWAS revealed that 3/0 and 5/0 SNPs were associated to OT and WBC in FD/PM for a 12 and a 7 % FDR threshold, respectively. The SNP of largest effect was responsible for a of 7% and 32% of the total additive genetic variance of OT and WBC inFD, respectively. These results suggest a differential pattern of genetic regulation of tenderness between the two muscles