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Comparison of Ahiflower oil containing stearidonic acid to a high-alpha-linolenic acid flaxseed oil at two dietary levels on omega-3 enrichment of egg yolk and tissues in laying hens.
Lipids 2023 April 12
Enrichment of egg yolks with very long chain omega-3 fatty acids (VLCn-3 FA) is of interest because of their beneficial effects on human health. The ability of Ahiflower® oil (AHI; Buglossoides arvensis), which is naturally rich in stearidonic acid (SDA), and a high-alpha-linolenic acid (ALA) flaxseed (FLAX) oil to enrich eggs and tissues of laying hens with VLCn-3 FA was investigated. Forty 54-week-old Hy-Line W-36 White Leghorn hens were fed a diet that contained soybean oil (control; CON) or AHI or FLAX oils at 7.5 or 22.5 g/kg of the diet in substitution for the soybean oil for 28 days. Dietary treatments had no effects on egg number or components or follicle development. Total VLCn-3 FA contents of egg yolk, liver, breast, thigh, and adipose tissue were greater in the n-3 treatments compared to CON, with the greatest increase observed at the higher oil level, especially for AHI oil which had the greater VLCn-3 enrichment than FLAX in yolk (p < 0.001). Efficiency of VLCn-3 enrichment of egg yolks was decreased with n-3 oils and by increasing oil level with lowest efficiency at 22.5 g/kg FLAX. In conclusion, both SDA-rich (AHI) and ALA-rich (FLAX) oils increased VLCn-3 FA deposition into egg yolks and hens' tissues, but dietary AHI oil promoted a greater enrichment than comparative amounts of FLAX oil, especially in liver and egg yolks.
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