Sustainable microalgal feed formulations for functional and omega-3-enriched eggs in poultry production

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dc.contributor.authorDiaz Mac Adoo , Daniela
dc.contributor.authorMata, María Teresa
dc.contributor.authorKaltsidi, Maria P.
dc.contributor.authorArdiles, Paula
dc.contributor.authorJensen, Niel
dc.contributor.authorCruz-Balladares, Victoria
dc.contributor.authorCameron, Henry
dc.contributor.authorAvalos, Vladimir
dc.contributor.authorSepúlveda-Sánchez, Francisco
dc.contributor.authorPalma, Jennifer
dc.contributor.authorRiquelme, Carlos
dc.date.accessioned2026-10-19T12:43:50Z
dc.date.available2026-10-19T12:43:50Z
dc.date.issued2026
dc.description.abstractThis study evaluated the dietary supplementation of Hy-Line Brown® laying hens with a microalgal blend composed of Microchloropsis gaditana and Muriellopsis sp. strain MCH-35 at inclusion levels of 1% and 3% (microalgal mix) and 10% (M. gaditana), aiming to improve the nutritional and functional quality of eggs. The formulated pellets were analyzed for proximate composition, fatty acid profile, carotenoid content, and antioxidant capacity, while the feeding trials were conducted over eight weeks. Microalgal inclusion enhanced the nutritional profile of the feed by increasing protein, lipid, and mineral contents while reducing crude fiber. M. gaditana contributed high levels of eicosapentaenoic acid (EPA), whereas Muriellopsis sp. exhibited higher lutein and total carotenoid contents, significantly increasing antioxidant capacity. In egg yolks, supplementation produced a progressive, dose-dependent increase in pigmentation, with the most intense coloration observed in the 3% and 10% treatments. Additionally, a significant increase in docosahexaenoic acid (DHA) and a reduction in linoleic acid (n-6) were recorded, improving the n-6/n-3 ratio from 24:1 (control) to 7:1 (3%) and 6:1 (10% M. gaditana). Total carotenoid and lutein contents in yolks increased by 2.3- and 2.7-fold, respectively, without affecting egg physical parameters. Biochemical profiles of the hens confirmed the absence of hepatic or metabolic stress, validating the safety of supplementation. Microalgae-enriched pellets offer an innovative and sustainable feed alternative that enables the production of functional eggs enriched with omega-3 fatty acids and carotenoids, enhancing their nutritional quality while adding both economic and environmental value to the poultry sector.
dc.description.sponsorshipThe National Agency for Research and Development (ANID, Chile) IDeA I+D project ID23I10007; The Grant in Academia 2024 program; project "OASIS VERTICAL: Transforming the challenges of desert agri culture into sustainable opportunities" (ANID Grant No. 85240132).
dc.identifier.doi10.1016/j.algal.2026.104924
dc.identifier.issn2211-9264
dc.identifier.urihttps://repositorioabierto.uantof.cl/handle/uantof/783
dc.language.isoen
dc.publisherElsevier B.V.
dc.rightsAttribution-NonCommercial 4.0 Internationalen
dc.rights.urihttp://creativecommons.org/licenses/by-nc/4.0/
dc.sourceAlgal Research
dc.subjectMicroalgae; Eggs; Poultry feed; Omega 3; Carotenoids; Lutein; Laying hens
dc.titleSustainable microalgal feed formulations for functional and omega-3-enriched eggs in poultry production
dc.typeArticle
oaire.citation.volume99
organization.identifier.rorhttps://ror.org/04eyc6d95
organization.legalNameUniversidad de Antofagasta
uantof.curation.reviewed2026-11-05
uantof.curation.reviewedByDiego León
uantof.identificator.centerCentro de Bioinnovación
uantof.identificator.departmentDepartamento de Biotecnología
uantof.identificator.departmentDepartamento Biomédico
uantof.identificator.departmentDepartamento de Ciencias de los Alimentos y Nutrición
uantof.identificator.facultyFacultad de Ciencias del Mar y Recursos Biológicos
uantof.identificator.facultyFacultad de Ciencias de la Salud
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Centro de Bioinnovación
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