Animal Trait Correlation Database

 Goat Reference # 33069406

Authors:Luigi-Sierra MG, Landi V, Guan D, Delgado JV, Castelló A, Cabrera B, Mármol-Sánchez E, Alvarez JF, Gómez-Carpio M, Martínez A, Such X, Jordana J, Amills M (Contact: marcel.amills@uab.cat)
Affiliation:Centre for Research in Agricultural Genomics (CRAG), CSIC-IRTA-UAB-UB, Campus Universitat Autònoma de Barcelona, Bellaterra 08193, Spain
Title:A genome-wide association analysis for body, udder, and leg conformation traits recorded in Murciano-Granadina goats
Journal:Journal of dairy science, 2020, 103 (12): 11605-11617 DOI: S0022-0302(20)30826-2
Abstract:

Morphological traits are of great importance to dairy goat production given their effect on phenotypes of economic interest. However, their underlying genomic architecture has not yet been extensively characterized. Herein, we aimed to identify genomic regions associated with body, udder, and leg conformation traits recorded in 825 Murciano-Granadina goats. We genotyped this resource population using the GoatSNP50 BeadChip (Illumina Inc., San Diego, CA) and performed genome-wide association analyses using the GEMMA software. We found 2 genome-wide significant associations between markers rs268273468 [Capra hircus (CHI) 16:69617700] and rs268249346 (CHI 28:18321523) and medial suspensory ligament. In contrast, we did not detect any genome-wide significant associations for body and leg traits. Moreover, we found 12, 19, and 7 chromosome-wide significant associations for udder, body, and leg traits, respectively. Comparison of our data with previous studies revealed a low level of positional concordance between regions associated with morphological traits. In addition to technical factors, this lack of concordance could be due to a substantial level of genetic heterogeneity among breeds or to the strong polygenic background of morphological traits, which makes it difficult to detect genetic factors that have small phenotypic effects.

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