Effects of Dietary Selenium Source and Storage on Internal Quality of Eggs

Kralik, Gordana; Gajčević, Zlata; Suchý, Pavel; Straková, Eva; Hanžek, Danica

doi:10.2754/avb200978020219

Cited by 23 publications

(14 citation statements)

References 6 publications

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“…Albumen ( Results from this study partially agree with those reported by Skrivan et al (2006), Surai et al (2006) and Gajcevic et al (2009) and Kralik et al (2009); however, supplementation of diet with selenium was able to linearly increase (y = 3.09308 + 9.63459 x, r 2 = 0.52) the concentration of this mineral only in the albumen (Table 4). This fact can be explained by the selenomethionine role on protein synthesis and protein deposition in this portion of the egg.…”

Section: Factorsupporting

confidence: 91%

Egg quality during storage and deposition of minerals in eggs from quails fed diets supplemented with organic selenium, zinc and manganese

et al. 2011

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-Three experiments with Japanese laying quails were performed aiming to assess the effect of supplementation with minerals in organic form on the egg quality during storage and the deposition of minerals in eggs. The assessments of each experiment were related to one mineral, thus, experiment 1 assessed the supplementation with selenium in 0.35-, 0.70-and 1.05-mg/kg levels of feed; experiment 2, the supplementation with zinc in 50-, 100-and 150-mg/kg levels of feed; and experiment 3, the supplementation of manganese with 60-; 120-and 180-mg/kg levels of feed. All diets were evaluated compared with a control diet without mineral supplementation. Birds were distributed in a completely randomized experimental design, with eight birds per plot and six replicates per treatment. Fifty-five days after the beginning of diets, the yolks of three eggs from each plot were collected for selenium, zinc and manganese quantification, whereas the albumens of three eggs from each parcel were collected for analysis of selenium concentration. Eggs were collected at the last days of the experimental period from each experiment, to be stored at room temperature (28±2 °C) and refrigeration (4 °C) during different periods (0, 10, 20 and 30 days), except for experiment 3, in which eggs were stored at 0, 10 and 20 days. Percentages of albumen and yolk, yolk index, Haugh unit and moisture loss of eggs were evaluated. The supplementation with selenium is able to maintain the egg yolk index unchanged over the storage periods; however, supplementation with zinc and manganese is not effective to keep the quality of stored eggs. Supplementation with selenium and manganese is effective to increase the concentration of these minerals at 328.66% in the albumen and at 74.47% in the yolk, respectively. The different levels of zinc do not change the egg composition.

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Section: Factorsupporting

confidence: 91%

Egg quality during storage and deposition of minerals in eggs from quails fed diets supplemented with organic selenium, zinc and manganese

et al. 2011

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“…Some aspects of egg quality such as Haugh unit values are known to be adversely affected by the length of storage. However, the supplementation of diets for laying hens with organic Se source appears to be an effective tool positively influencing the indicators of egg freshness [28,32]. In such a way, the enrichment of eggs with Se can improve internal egg quality and decrease susceptibility of egg yolk to lipid peroxidation during storage [33].…”

Section: Discussionmentioning

confidence: 99%

Effects of Dietary Form of Selenium on Its Distribution in Eggs

Čobanová

Petrovič

Mellen

et al. 2011

Biol Trace Elem Res

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The objective of this experiment was to investigate the selenium distribution in eggs from hens fed diets supplemented with Se from sodium selenite (SS) or selenium-enriched yeast (SY). One-day-old female chickens of Hy-Line Brown breed were randomly divided into four groups according to dietary treatments and, for the subsequent 9 months, were fed diets which differed only in the form or amount of Se supplemented. During the whole experiment, group 1 (control) was fed basal diet (BD) with only background Se level of 0.13 mg/kg dry matter (DM). Diets for groups 2 and 3 consisted of BD supplemented with an Se dose of 0.4 mg/kg DM either in the form of SS or SY, respectively. Group 4 was fed BD supplemented with 0.9 mg Se/kg DM from SY. After 9 months of dietary treatments, the Se levels in egg yolk and albumen from hens fed unsupplemented diet were almost identical whereas eggs from hens given diet supplemented with SS showed significantly higher Se deposition in yolk than in albumen (P < 0.01). On the other hand, the feed supplementation with Se doses 0.4 or 0.9 mg/kg DM from SY resulted in significantly higher Se concentration in albumen than in yolk (both P < 0.001). The total Se amounts in whole eggs from hens in groups 1, 2, 3 and 4 were 5.1, 14.4, 22.7 and 31.6 μg Se/egg thus demonstrating the significantly higher (P < 0.001) selenium deposition in eggs from hens given feed enriched with SY than from birds fed diet with equivalent SS dose. Regardless of dose and source, the selenium supplementation to feeds for groups 2, 3 and 4 resulted in significantly increased α-tocopherol concentration in egg yolk compared to control group 1 (P < 0.001). The presented results demonstrate the different pattern of Se distribution in egg mass when laying hens are fed diets supplemented with inorganic or organic selenium sources.

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“…Se concentration in diets affected significantly the content of Se in albumen and yolk (Kralik et al 2009). Eggs laid by hens contained 11-19 µg of Se, with more Se in the yolk.…”

Section: Selenium and Meat And Egg Qualitymentioning

confidence: 99%

Selenium in poultry nutrition: a review

Suchý¹,

Straková²,

Herzig³

2014

Czech J. Anim. Sci.

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Selenium has been known for two centuries and its biological activities have been studied for nearly a hundred years, however the problem of Se deficit has still been persisting both in humans and animals. The cause of Se deficit in animals may be low Se level in soil. This mainly applies to cattle and sheep with their direct link to soil via roughage. The risk of Se deficit in pigs and poultry is lower due to lower dependence on soil Se level in the region and Se fortification in feed mixes. The present research focuses on the effects of Se on meat and egg quality, antioxidant activity of Se, effects on fatty acid levels, activity of glutathione-peroxidase, or the effect of Se on the immune system. Ensuring natural Se supply in human nutrition by food of animal origin, mainly poultry meat and eggs (the "functional foods"), is another area to which extensive attention has recently been paid.

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Effects of Dietary Selenium Source and Storage on Internal Quality of Eggs

Cited by 23 publications

References 6 publications

Egg quality during storage and deposition of minerals in eggs from quails fed diets supplemented with organic selenium, zinc and manganese

Egg quality during storage and deposition of minerals in eggs from quails fed diets supplemented with organic selenium, zinc and manganese

Effects of Dietary Form of Selenium on Its Distribution in Eggs

Selenium in poultry nutrition: a review

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