Potential use of seaweeds in the laying hen ration to improve the quality of n-3 fatty acid enriched eggs

Abstract

An association between dietary fish oil and decreased yolk weight and reduced sensory quality of eggs has been reported when eggs are enriched with n-3 FA from fish oil. Seaweeds are an important source of compounds that seem to increase egg weight when included in the laying hen diet. The objectives of this study were to determine the influence of the dietary seaweeds Macrocystis pyrifera, Sargassum sinicola and Enteromorpha sp. on the physical quality, lipid composition and consumer acceptability of n-3 FA enriched eggs. One-hundred and forty-four 35-weekold Leghorn hens were randomly distributed in four treatments that consisted of the inclusion of 2% of sardine oil (SO) and 10% of each marine alga (MA) in laying hens' diets; a control diet (C) was also prepared. The study lasted 8 weeks and egg physical quality, egg lipids and sensory attributes were evaluated. The results showed that incorporation of 10% M. pyrifera in the diets is an effective way of increasing the n-3 FA content, the albumen height and yolk color, but not the egg weight, when these are enriched with n-3 FA from fish oil. The egg flavor was also not affected.

Consumption of Ulva clathrata as a dietary supplement stimulates immune and lipid metabolism genes in Pacific white shrimp Litopenaeus vannamei

“…These results confirm the effect at a molecular level on the lipid metabolism and agree with previously reported studies (Maeda et al 2005;Seo et al 2013). These studies also demonstrated that U. clathrata had significant effects on lipid composition of different fishes and terrestrial animal species (Nakagawa et al 1987;Nakagawa 1997;Wong et al 1999;Pengzhan et al 2003;Ortiz et al 2006;Carillo et al 2008;Ergün et al 2008). In shrimp, U. clathrata promotes the production of certain 18 carbon polyunsaturated fatty acids (PUFAs) (Kumari et al 2010), as well as favoring an increase in the content of 18:0, 18:3n3, 20:5n3 (Ortiz et al 2006;Carillo et al 2008;Peña-Rodríguez et al 2010).…”

“…These studies also demonstrated that U. clathrata had significant effects on lipid composition of different fishes and terrestrial animal species (Nakagawa et al 1987;Nakagawa 1997;Wong et al 1999;Pengzhan et al 2003;Ortiz et al 2006;Carillo et al 2008;Ergün et al 2008). In shrimp, U. clathrata promotes the production of certain 18 carbon polyunsaturated fatty acids (PUFAs) (Kumari et al 2010), as well as favoring an increase in the content of 18:0, 18:3n3, 20:5n3 (Ortiz et al 2006;Carillo et al 2008;Peña-Rodríguez et al 2010). In contrast, it has been demonstrated that fucoidan treatment (polysaccharide extracted from brown seaweed) affects adipogenesis in 3T3-L1 cell lines (Kim et al 2010) as it suppresses the adipocites differentiation and inhibits the expression of adipogenic transcription factors α (C / EBPAα), γ (PPARγ) and AP2.…”

n-3 Fatty acid content in eggs laid by hens fed with marine algae and sardine oil and stored at different times and temperatures

“…The most commonly used antioxidant is vitamin E. However, marine algae are an additional alternative to consider. In the poultry industry, algae have been used as a source of minerals and natural pigments as a means to reduce eggs' cholesterol content (Rodríguez et al 1995;Herber-McNeill and Van Elswyk 1998;Ramos et al 1998;Carrillo et al 1992Carrillo et al , 2002Carrillo et al , 2008. Additionally, algae are a natural source of antioxidants (Ortega et al 1993;Allen et al 2001;CasasValdez et al 2006;Yuan 2008).…”

5 Algae for aquaculture and animal feeds

“…Micro-and macroalgae have similarly been tested as alternatives to fish oil and flax seed for boosting the HUFA content of hen's eggs (Carrillo et al 2008;Kassis et al 2010). …”