title: Estimates of genetic parameters for fatty acids in brisket adipose tissue of Canadian commercial crossbred beef steers.
abstract: Heritability and genetic and phenotypic correlations between 15 individuals and 10 groups of fatty acids with a concentration greater than 0.5% in the brisket adipose tissue of 223 Angus and Charolais based crossbred commercial steers were estimated using univariate and bivariate animal models. Individual saturated fatty acids were low to moderately heritable, with heritability estimates ranging from 0.05 (C16:0) to 0.31 (C15:0). Individual monounsaturated fatty acids were low to moderately highly heritable ranging from 0.04 (9c C17:1 and 11c C18:1) to 0.51 (9c C14:1). Polyunsaturated fatty acid C18:2n-6 was moderately heritable (0.17). Among groups of fatty acids, heritability estimates ranged from 0.03 for branched chain fatty acid (BCFA) and n-6/n-3 to 0.16 for n-6 and Health Index. A range of low (0.00) to high (1.00) phenotypic and genetic correlations was observed among the 25 fatty acids considered in this study. In general, fatty acids such as conjugated linoleic acid (CLA) and 11t C18:1, with potential health benefits, showed significant antagonistic correlations with unhealthy fatty acids such as C14:0 and C16:0. The results from this study provide insight into the direct genetic control of host genes on fatty acid composition of beef tissues and will facilitate designs of genetic selection and/or genetic based diet management to improve fatty acid composition in beef cattle.
authors: Department of Agricultural, Food and Nutritional Science, University of Alberta, Edmonton, AB T6G 2P5, Canada.
authors: C
authors: C
authors: Ekine-Dzivenu
authors: Department of Agricultural, Food and Nutritional Science, University of Alberta, Edmonton, AB T6G 2P5, Canada.
authors: L
authors: L
authors: Chen
authors: Agriculture and Agri-Food Canada, Lacombe Research Centre, 6000 C&E Trail, Lacombe, AB T4L 1W1, Canada.
authors: M
authors: M
authors: Vinsky
authors: Agriculture and Agri-Food Canada, Lacombe Research Centre, 6000 C&E Trail, Lacombe, AB T4L 1W1, Canada; Lascaray Research Centre, University of the Basque Country (UPV-EHU), 01006 Vitoria-Gasteiz, Spain.
authors: N
authors: N
authors: Aldai
authors: Agriculture and Agri-Food Canada, Lacombe Research Centre, 6000 C&E Trail, Lacombe, AB T4L 1W1, Canada.
authors: M E R
authors: ME
authors: Dugan
authors: Agriculture and Agri-Food Canada, Lethbridge Research Centre, 5403-1st Avenue South, Lethbridge, AB T1J 4B1, Canada.
authors: T A
authors: TA
authors: McAllister
authors: Department of Agricultural, Food and Nutritional Science, University of Alberta, Edmonton, AB T6G 2P5, Canada.
authors: Z
authors: Z
authors: Wang
authors: Department of Agricultural, Food and Nutritional Science, University of Alberta, Edmonton, AB T6G 2P5, Canada.
authors: E
authors: E
authors: Okine
authors: Department of Agricultural, Food and Nutritional Science, University of Alberta, Edmonton, AB T6G 2P5, Canada; Agriculture and Agri-Food Canada, Lacombe Research Centre, 6000 C&E Trail, Lacombe, AB T4L 1W1, Canada. Electronic address: changxi.li@agr.gc.ca.
authors: C
authors: C
authors: Li
mesh_terms: D000273:Adipose Tissue / Q000378:metabolism*; D000818:Animals; D001947:Breeding; D002170:Canada; D002417:Cattle; D005227:Fatty Acids / Q000235:genetics*; D006801:Humans; D008297:Male; D008460:Meat / Q000032:analysis*; D010641:Phenotype; D019655:Quantitative Trait, Heritable; D013045:Species Specificity
chemical_list: D005227:Fatty Acids
keywords: Beef cattle; Fatty acid; Genetic correlation; Heritability; Phenotypic correlation