title: Use of near infrared spectroscopy for estimating meat chemical composition, quality traits and fatty acid content from cattle fed sunflower or flaxseed.
abstract: This study tested the ability of near infrared reflectance spectroscopy (NIRS) to predict meat chemical composition, quality traits and fatty acid (FA) composition from 63 steers fed sunflower or flaxseed in combination with high forage diets. NIRS calibrations, tested by cross-validation, were successful for predicting crude protein, moisture and fat content with coefficients of determination (R(2)) (RMSECV, g·100g(-1) wet matter) of 0.85 (0.48), 0.90 (0.60) and 0.86 (1.08), respectively, but were not reliable for meat quality attributes. This technology accurately predicted saturated, monounsaturated and branched FA and conjugated linoleic acid content (R(2): 0.83-0.97; RMSECV: 0.04-1.15mg·g(-1) tissue) and might be suitable for screening purposes in meat based on the content of FAs beneficial to human health such as rumenic and vaccenic acids. Further research applying NIRS to estimate meat quality attributes will require the use on-line of a fibre-optic probe on intact samples.
authors: 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@agr.gc.ca.
authors: N
authors: N
authors: Prieto
authors: Lacombe Research Centre, Agriculture and Agri-Food Canada, 6000 C&E Trail, Lacombe, Alberta T4L 1W1, Canada; Livestock Gentec, Edmonton, Alberta, T6G 2C8, Canada.
authors: O
authors: O
authors: López-Campos
authors: Lacombe Research Centre, Agriculture and Agri-Food Canada, 6000 C&E Trail, Lacombe, Alberta T4L 1W1, Canada.
authors: J L
authors: JL
authors: Aalhus
authors: Lacombe Research Centre, Agriculture and Agri-Food Canada, 6000 C&E Trail, Lacombe, Alberta T4L 1W1, Canada.
authors: M E R
authors: ME
authors: Dugan
authors: Lacombe Research Centre, Agriculture and Agri-Food Canada, 6000 C&E Trail, Lacombe, Alberta T4L 1W1, Canada.
authors: M
authors: M
authors: Juárez
authors: Lacombe Research Centre, Agriculture and Agri-Food Canada, 6000 C&E Trail, Lacombe, Alberta T4L 1W1, Canada.
authors: B
authors: B
authors: Uttaro
mesh_terms: D000821:Animal Feed / Q000032:analysis*; D000818:Animals; D002417:Cattle; D004041:Dietary Fats / Q000032:analysis; D004044:Dietary Proteins / Q000032:analysis; D005227:Fatty Acids / Q000032:analysis*; D019597:Flax; D063427:Food Quality; D006368:Helianthus; D044243:Linoleic Acids, Conjugated / Q000032:analysis; D008297:Male; D008460:Meat / Q000032:analysis*; D009829:Oleic Acids / Q000032:analysis; D012639:Seeds / Q000737:chemistry; D019265:Spectroscopy, Near-Infrared
chemical_list: D004041:Dietary Fats; D004044:Dietary Proteins; D005227:Fatty Acids; D044243:Linoleic Acids, Conjugated; D009829:Oleic Acids; C046938:9,11-linoleic acid; C050413:11-octadecenoic acid
keywords: Fatty acid; Flaxseed; Meat quality; NIRS; Sunflower