title: Muscle antioxidant (vitamin E) and major fatty acid groups, lipid oxidation and retail colour of meat from lambs fed a roughage based diet with flaxseed or algae.
abstract: The effect of feeding flaxseed or algae supplements to lambs on muscle antioxidant potential (vitamin E), major fatty acid groups, lipid oxidation and retail colour was investigated. Lambs (n=120) were randomly allocated to one of 4 dietary treatments according to liveweight and fed the following diets for eight weeks: Annual ryegrass hay [60%]+subterranean clover hay [40%] pellets=Basal diet; Basal diet with flaxseed (10.7%)=Flax; Basal diet with algae (1.8%)=Algae; Basal diet with flaxseed (10.7%) and algae (1.8%)=FlaxAlgae. Flaxseed or algae supplementation significantly affected major fatty acid groups in muscle. The addition of algae (average of Algae and FlaxAlgae) resulted in lower vitamin E concentration in muscle (P<0.003; 1.0 vs 1.3mg/kg of muscle) compared with lambs fed a diet without algae (average of Basal and Flax). Increasing muscle EPA+DHA by algae supplementation significantly increased lipid oxidation, but retail display colour of fresh meat was not affected.
authors.affiliation: Agriculture Research and Development, DEDJTR, Melbourne, Victoria 3001, Australia. Electronic address: eric.ponnampalam@ecodev.vic.gov.au.
authors.forename: Eric N
authors.initials: EN
authors.lastname: Ponnampalam
authors.affiliation: Agriculture Research and Development, DEDJTR, Melbourne, Victoria 3001, Australia.
authors.forename: Viv F
authors.initials: VF
authors.lastname: Burnett
authors.affiliation: Agriculture Research and Development, DEDJTR, Melbourne, Victoria 3001, Australia.
authors.forename: Sorn
authors.initials: S
authors.lastname: Norng
authors.affiliation: NSW Department of Primary Industries, Centre for Red Meat and Sheep Development, PO Box 129, Cowra, NSW 2794, Australia.
authors.forename: David L
authors.initials: DL
authors.lastname: Hopkins
authors.affiliation: Agriculture Research and Development, DEDJTR, Melbourne, Victoria 3001, Australia.
authors.forename: Tim
authors.initials: T
authors.lastname: Plozza
authors.affiliation: Agriculture Research and Development, DEDJTR, Melbourne, Victoria 3001, Australia.
authors.forename: Joe L
authors.initials: JL
authors.lastname: Jacobs
mesh_terms: D000818:Animals; D000975:Antioxidants / Q000032:analysis* / Q000378:metabolism; D059001:Aquatic Organisms / Q000737:chemistry; D004032:Diet / Q000662:veterinary*; D004041:Dietary Fats / Q000032:analysis*; D004043:Dietary Fiber; D004281:Docosahexaenoic Acids / Q000032:analysis / Q000378:metabolism; D015118:Eicosapentaenoic Acid / Q000032:analysis / Q000378:metabolism; D005227:Fatty Acids / Q000032:analysis* / Q000378:metabolism; D019597:Flax / Q000737:chemistry; D061353:Food Storage; D015227:Lipid Peroxidation; D008460:Meat / Q000032:analysis*; D008786:Metmyoglobin / Q000032:analysis / Q000737:chemistry; D018482:Muscle, Skeletal / Q000254:growth & development / Q000378:metabolism; D009211:Myoglobin / Q000032:analysis / Q000737:chemistry; D010084:Oxidation-Reduction; D010860:Pigments, Biological / Q000032:analysis / Q000096:biosynthesis; D034561:Sheep, Domestic / Q000254:growth & development / Q000502:physiology*; D058009:Stramenopiles / Q000737:chemistry; D013499:Surface Properties; D014810:Vitamin E / Q000032:analysis* / Q000378:metabolism
chemical_list: D000975:Antioxidants; D004041:Dietary Fats; D004043:Dietary Fiber; D005227:Fatty Acids; D009211:Myoglobin; D010860:Pigments, Biological; C017595:oxymyoglobin; D008786:Metmyoglobin; D014810:Vitamin E; D004281:Docosahexaenoic Acids; D015118:Eicosapentaenoic Acid
keywords: Diet; Fatty acid composition; Lipid oxidation; Meat; Retail display colour; Sheep