Nannochloropsis oceanica microalga feeding increases long-chain omega-3 polyunsaturated fatty acids in lamb meat. (March 2023)

• Record Type: Journal Article
• Authors: Vítor, A.C.M.; Godinho, M.; Francisco, A.E.; Silva, J.; Almeida, J.; Fialho, L.; Soldado, D.; Jerónimo, E.; Scollan, N.D.; Huws, S.A.; Santos-Silva, J.; Alves, S.P.; Bessa, R.J.B.
• Is Part Of: Meat science. Volume 197(2023)
• Publication Date: 2023-03
• Subjects: Nannochloropsis oceanica -- Fatty acids -- Lamb meat -- Sensory traits, meat oxidation; Meat -- Periodicals; Meat industry and trade -- Periodicals; Viande -- Périodiques; Viande -- Industrie -- Périodiques; Meat; Meat industry and trade; Periodicals; 641.36
• DOI: 10.1016/j.meatsci.2022.109053
• Languages: English
• ISSNs: 0309-1740

Abstract

Abstract: To test the hypothesis that lambs fed freeze-dried Nannochloropsis oceanica (NO) biomass will have a higher deposition of EPA in tissues than those fed other Nannochloropsis EPA-sources, we fed 28 lambs with one of four diets: i) C, control, without EPA; ii) O, with 1.2% Nannochloropsis oil; iii) SD, with 12.3% spray-dried NO biomass; iv) FD, with 9.2% freeze-dried NO biomass. Dry matter intake, growth, tissues fatty acid composition, oxidative stability and sensory traits of the resultant meat were evaluated. The EPA was highest in tissues of lambs fed SD and FD compared with O but was similar between SD and FD. Total trans -18:1 did not differ among treatments, but the t 10/ t 11–18:1 ratio decreased with all EPA containing diets. EPA diets were also supplemented with Vitamin E preventing the lipid oxidation in EPA-enriched meat and the meat sensory traits were not affected although occasionally some off-flavours were detected in FD meat. Highlights: Diets with Nannochloropsis oceanica were palatable allowing similar intake to the control. Nannochloropsis oceanica biomass diets increased the eicosapentaenoic acid (EPA, 20:5n-3 content of lamb tissues. The increase in EPA was proportionally larger in adipose tissue than in muscle. Nannochloropsis (oil or biomass) reduced the accumulation of t 10–18:1 in the lamb tissues.