The present invention relates to the identification of single nucleotide polymorphisms (SNPs) in a ubiquinol-cytochrome c reductase core protein I (UQCRC1) gene and its associations association with fat deposition and fatty acid composition. The invention further encompasses methods and systems, including network-based processes, to manage the SNP data, haplotype data and other data relating to specific animals and herds of animals, veterinarian care, diagnostic and quality control data and management of livestock which, based on genotyping, have predictable meat quality traits, husbandry conditions, animal welfare, food safety information, audit of existing processes and data from field locations.