title: Predicting fat quality from pigs fed reduced-oil corn dried distillers grains with solubles by near infrared reflectance spectroscopy: fatty acid composition and iodine value.
abstract: This study tested the ability of near infrared reflectance spectroscopy (NIRS) to estimate the fatty acid (FA) composition and iodine value (IV) of backfat from carcasses of pigs fed reduced-oil corn dried distillers grains with solubles. NIRS was suitable for screening purposes for the proportions of total saturated, monounsaturated, polyunsaturated, n-3 and n-6 FAs and some individual FAs such as C16:0, C18:1, C18:2n-6 and C18:3n-3 (R(2)=0.80-0.89; RMSECVs, root mean square errors of cross-validation=0.21-1.37% total FA) in both cold and warm intact backfat samples. This technology also met the requirements for a quick screening for the backfat IV in both cold and warm intact samples (R(2)=0.90 and 0.87; RMSECVs=1.66 and 1.80% total FA, respectively), which would help provide differential feed-back to pig producers and the feed industry and may provide the opportunity for breeding pigs for a desirable fat quality.
authors.affiliation: Department of Agricultural, Food and Nutritional Science, University of Alberta, 4-10 Agriculture/Forestry Centre, Edmonton, Alberta T6G 2P5, Canada.; Lacombe Research Centre, Agriculture and Agri-Food Canada, 6000 C&E Trail, Lacombe, Alberta T4L 1W1, Canada. Electronic address: nuria.prieto@ualberta.ca.
authors.forename: N
authors.initials: N
authors.lastname: Prieto
authors.affiliation: Lacombe Research Centre, Agriculture and Agri-Food Canada, 6000 C&E Trail, Lacombe, Alberta T4L 1W1, Canada.
authors.forename: B
authors.initials: B
authors.lastname: Uttaro
authors.affiliation: Lacombe Research Centre, Agriculture and Agri-Food Canada, 6000 C&E Trail, Lacombe, Alberta T4L 1W1, Canada.
authors.forename: C
authors.initials: C
authors.lastname: Mapiye
authors.affiliation: Lacombe Research Centre, Agriculture and Agri-Food Canada, 6000 C&E Trail, Lacombe, Alberta T4L 1W1, Canada.
authors.forename: T D
authors.initials: TD
authors.lastname: Turner
authors.affiliation: Lacombe Research Centre, Agriculture and Agri-Food Canada, 6000 C&E Trail, Lacombe, Alberta T4L 1W1, Canada.
authors.forename: M E R
authors.initials: ME
authors.lastname: Dugan
authors.affiliation: Gowans Feed Consulting, Wainwright, AB, Canada.
authors.forename: V
authors.initials: V
authors.lastname: Zamora
authors.affiliation: Gowans Feed Consulting, Wainwright, AB, Canada.
authors.forename: M
authors.initials: M
authors.lastname: Young
authors.affiliation: Alberta Agriculture and Rural Development, Edmonton, AB, Canada.
authors.forename: E
authors.initials: E
authors.lastname: Beltranena
mesh_terms: D000273:Adipose Tissue; D000821:Animal Feed; D000824:Animal Nutritional Physiological Phenomena; D000818:Animals; D004032:Diet / Q000379:methods / Q000662:veterinary; D002523:Edible Grain; D005227:Fatty Acids / Q000032:analysis / Q000737:chemistry*; D005260:Female; D007455:Iodine / Q000378:metabolism*; D008297:Male; D019265:Spectroscopy, Near-Infrared; D013552:Swine; D003313:Zea mays
chemical_list: D005227:Fatty Acids; D007455:Iodine
keywords: Backfat; DDGS; Fatty acid; Iodine value; NIRS; Pork