title: Polymorphism of fat metabolism genes as candidate markers for meat quality and production traits in heavy pigs.
abstract: High meat quality is required for dry-cured ham production, which quality depends on meat fat quantity and composition. The aim was to study the polymorphisms of six genes involved in fat metabolism, namely, Stearoyl-CoA desaturase (SCD), Diacylglycerol acyltransferase 1 and 2 (DGAT1 &DGAT2), Microsomal triglyceride transfer protein (MTTP), Fatty acid synthase (FASN) and Heart fatty acid binding protein (H-FABP) in two traditional (Large White or Duroc × (Landrace × Large White)) and two industrial hybrids (Goland and Danbred), which are used for dry-cured ham production. Significant associations of SCD and MTTP were found with carcass weight. DGAT2 was associated with back fat thickness and L* fat colour (objective white colour score). Several genes (DGAT2, MTTP &FASN) were associated with weight loss during salting, first step in dry-cured ham production, affecting final yield. Finally, MTTP was associated with shear force. Our findings suggest that the SCD, DGAT2, MTTP and FASN polymorphisms are associated with quality of heavy pig meat products.
authors.affiliation: Department of Food Science, University of Udine, Italy. Electronic address: benedicte.renaville@uniud.it.
authors.forename: B
authors.initials: B
authors.lastname: Renaville
authors.affiliation: Zoetis, VMRD Genetics, Kalamazoo, MI, USA.
authors.forename: N
authors.initials: N
authors.lastname: Bacciu
authors.affiliation: Department of Food Science, University of Udine, Italy.
authors.forename: M
authors.initials: M
authors.lastname: Lanzoni
authors.affiliation: Department of Agriculture and Environmental Science, University of Udine, Via Sondrio 2A, 33100 Udine, Italy.
authors.forename: M
authors.initials: M
authors.lastname: Corazzin
authors.affiliation: Department of Agriculture and Environmental Science, University of Udine, Via Sondrio 2A, 33100 Udine, Italy.
authors.forename: E
authors.initials: E
authors.lastname: Piasentier
mesh_terms: D000273:Adipose Tissue / Q000378:metabolism*; D000818:Animals; D005260:Female; D005819:Genetic Markers; D008297:Male; D008460:Meat / Q000592:standards*; D011110:Polymorphism, Genetic; D013552:Swine / Q000235:genetics / Q000254:growth & development
chemical_list: D005819:Genetic Markers
keywords: Dry-cured ham; Fat; SNP