Impact of feed supplementation with different omega-3 rich microalgae species on enrichment of eggs of laying hens
- PMID: 23993584
- DOI: 10.1016/j.foodchem.2013.06.078
Impact of feed supplementation with different omega-3 rich microalgae species on enrichment of eggs of laying hens
Abstract
Four different omega-3 rich autotrophic microalgae, Phaeodactylum tricornutum, Nannochloropsis oculata, Isochrysis galbana and Chlorella fusca, were supplemented to the diet of laying hens in order to increase the level of omega-3 long-chain polyunsaturated fatty acids (n-3 LC-PUFA) in egg yolk. The microalgae were supplemented in two doses: 125 mg and 250 mg extra n-3 PUFA per 100g feed. Supplementing these microalgae resulted in increased but different n-3 LC-PUFA levels in egg yolk, mainly docosahexaenoic acid enrichment. Only supplementation of Chlorella gave rise to mainly α-linolenic acid enrichment. The highest efficiency of n-3 LC-PUFA enrichment was obtained by supplementation of Phaeodactylum and Isochrysis. Furthermore, yolk colour shifted from yellow to a more intense red colour with supplementation of Phaeodactylum, Nannochloropsis and Isochrysis, due to transfer of carotenoids from microalgae to eggs. This study shows that besides Nannochloropsis other microalgae offer an alternative to current sources for enrichment of hen eggs.
Keywords: Carotenoids; Chlorella fusca; Eggs; Enrichment; Isochrysis galbana; Microalgae; Nannochloropsis oculata; Omega-3 polyunsaturated fatty acids; Phaeodactylum tricornutum.
Copyright © 2013 Elsevier Ltd. All rights reserved.
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