Supplemental dietary oils rich in oleic acid or linoleic acid attenuate egg yolk and tissue n-3 polyunsaturated fatty acid contents in laying hens co-fed oils enriched in either stearidonic acid or α-linolenic acid. (September 2021)

• Record Type: Journal Article
• Authors: Elkin, Robert G.; El-Zenary, Ahmed S.A.; Bomberger, Rebecca; Harvatine, Kevin J.
• Is Part Of: Prostaglandins, leukotrienes, and essential fatty acids. Volume 172(2021)
• Publication Date: 2021-09
• Subjects: Adipose -- Egg yolk -- Linoleic acid -- α-linolenic acid -- Liver -- Oleic acid -- plasma -- Stearidonic acid -- n-3 polyunsaturated fatty acids; ALA α-linolenic acid -- CDV cardiovascular -- DHA docosahexaenoic acid -- DPA docosapentaenoic acid -- EPA eicosapentaenoic acid -- FLAX flaxseed oil -- HDL-C high-density lipoprotein-cholesterol -- HLsaf high-linoleic acid safflower oil -- HOsaf high-oleic acid safflower oil -- HOsoy high-oleic acid soybean oil -- HOsun high-oleic acid sunflower oil -- K3 EDTA tripotassium ethylenediaminetetraacetic acid -- LA linoleic acid -- MUFA monounsaturated fatty acids -- OA oleic acid -- LDL-C low-density lipoprotein-cholesterol -- MAO microalgae oil -- ME metabolizable energy -- PUFA polyunsaturated fatty acid(s) -- SDA stearidonic acid -- SDAsoy oil derived from soybeans genetically modified to produce relatively high concentrations of SDA -- VLC very long-chain; Lipids -- Periodicals; Unsaturated fatty acids -- Periodicals; Prostaglandins -- Periodicals; Leukotrienes -- Periodicals; Fatty Acids, Unsaturated -- Periodicals; Acides gras insaturés -- Périodiques; Prostaglandines -- Périodiques; Leucotriènes -- Périodiques; Lipides -- Périodiques; 612.01577
• DOI: 10.1016/j.plefa.2021.102322
• Languages: English
• ISSNs: 0952-3278

Abstract

Highlights: High-OA oils attenuate egg yolk n-3 PUFA content when fed with n-3 PUFA-rich oils. A high-LA oil attenuates egg yolk n-3 PUFA content when fed with n-3 PUFA-rich oils. OA and LA may outcompete n-3 PUFA for uptake from the intestine. Future fatty acid digestibility studies need to be conducted to prove this hypothesis. Summary: We previously reported that when laying hens were fed diets supplemented with oils enriched in α-linolenic acid (ALA) and oleic acid (OA), the deposition of n-3 PUFA in egg yolk was attenuated as compared to feeding hens a diet supplemented with the ALA-rich oil alone. The present work extends those findings to another n-3 PUFA-rich oil (stearidonic acid [SDA]-enriched soybean oil) and two other high-OA oils, suggesting that the effect is not plant oil-specific. Feeding hens a supplemental linoleic acid (LA)-rich oil plus an oil rich in either SDA or ALA also attenuated egg yolk ALA and SDA contents (Experiment 1), or egg yolk and liver ALA contents (Experiment 2), respectively, as compared to feeding the SDA- or ALA-rich oils alone. Future work should focus on the lack of neutrality of OA and LA in relation to n-3 PUFA nutrition.