Effect of an organic and conventional rearing system on the mineral content of hen eggs

Küçükyılmaz, Kamil; Bozkurt, Mehmet; Yamaner, Çiğdem; Çınar, Mustafa; Catli, AU; Konak, Ramazan

doi:10.1016/j.foodchem.2011.11.084

Cited by 47 publications

(24 citation statements)

References 10 publications

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“…O micromineral Fe foi detectado apenas em cinco amostras, atingindo o teor máximo de 6,25µg g -1 (Tabela 1). Estudos prévios relatam teores variados, de 1,5 até 23µg g -1 de Fe na casca de ovo, denotando que a concentração deste mineral pode variar nas cascas (SCHAAFSMA et al, 2000;VILAR et al, 2010;KÜÇÜKYILMAZ et al, 2012).…”

Section: Resultsunclassified

“…No entanto, somente alguns estudos avaliaram a composição mineral deste produto, utilizando número expressivo de amostras (SCHAAFSMA et al, 2000;KÜÇÜKYILMAZ et al, 2012;BRUN et al, 2013).…”

Section: Introductionunclassified

“…O sistema de criação das poedeiras é um possível fator de influência sobre a composição mineral de cascas de ovo (SCHAAFSMA et al, 2000;KÜÇÜKYILMAZ et al, 2012). Atualmente, a maioria dos ovos disponíveis para comercialização provém de galinhas poedeiras criadas em granjas no sistema intensivo (confinadas em gaiolas), sendo que a variação mais perceptível destes encontra-se na coloração das cascas (classificados em brancos e vermelhos).…”

Section: Introductionunclassified

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Casca de ovo como fonte de cálcio para humanos: composição mineral e análise microbiológica

et al. 2015

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Section: Resultsunclassified

Section: Introductionunclassified

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Casca de ovo como fonte de cálcio para humanos: composição mineral e análise microbiológica

et al. 2015

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“…In a study performed in Turkey (Aegean Region) for determining the mineral content of the organic and conventional chicken eggs, compare to conventional chicken eggs, P and Zn levels in the edible portion of organic chicken eggs were lower, whereas Mg was higher in shell, and there was no difference between organic and conventional eggs concerning calcium (Ca), Fe and Cu contents [39]. In Turkey, 0.020, 0.055 and 0.020 mg/L of Cd, Pb and Cu, respectively, were found below the LOD in all of the organically and conventionally produced flower honey and eggs by analysis, whereas Fe concentrations were found at higher levels in organic compared to conventional products [40].…”

Section: Metal Residues In Organic Animal Productsmentioning

confidence: 99%

Contaminants in Animal Products

Baydan¹,

Kanbur²,

Arslanbaş³

et al. 2017

Livestock Science

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Organic and conventional animal products may include residues of veterinary drugs and environmental contaminant. Food contaminants can cause consumer illness such as allergy, immunosuppression, cancer, teratogenicity, mutagenicity and genotoxicity. Therefore, their control is an important issue in terms of public health. In this article, information is given about contaminants such as bacterial, fungal, metal pesticides and veterinary drug that can be found in organic and conventional animal products. In addition, the effects of various cooking and freezing processes on contaminants in animal foods and their legal regulation have been mentioned.

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“…Consumers have important demand for food produced in animal-care production systems (2). As a result of this, many producers tend to establish well-managed alternative rearing systems which offer higher welfare standards for hens (23,43).…”

Section: Introductionmentioning

confidence: 99%

Effects of conventional and organic rearing systems and hen age on oxidative stress parameters of blood and ovarian tissues in laying hens

Şimşek¹,

Baykalır²,

Erişir³

et al. 2018

Ankara Üniversitesi Veteriner Fakültesi Dergisi

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Summary:In this study, effects of hen age and rearing systems on some oxidative stress parameters in serum and ovarian tissues of hens are investigated. For this purpose, total of 48 Bovans White commercial laying hybrids from two different rearing systems (conventional cage and organic) at 30 and 60 weeks of age were used. Serum and ovarian tissues of the hens were collected following slaughter process and malondialdehyde (MDA), glutathione (GSH), glutathione peroxidase (GSH-Px) and catalase (CAT) levels of serum and ovarian tissues were determined. MDA levels of serum was found significantly higher in conventional system, both in 30 and 60 weeks old (P<0.05). GSH-Px activity was lower, conversely CAT activity was significantly higher in conventional system (P<0.05). Hen age didn't affect MDA, GSH, GSH-Px and CAT levels of serum (P>0.05). In addition, there weren't any significant interactions between rearing system and hen age in serum (P>0.05). MDA (P=0.010) and GSH (P<0.01) levels of ovarian tissue were found significantly higher in conventional system while GSH levels of ovarian tissue had increased in 60 weeks old (P<0.01). GSH-Px and CAT activity was similar between groups (P>0.05). Interaction between rearing system and hen age affected activity of CAT in ovarian tissue (P<0.05). As a result, conventional battery cages caused oxidative stress interrelated with increasing lipid peroxidation and MDA levels in laying hens. Antioxidant enzymes that play role in reduction of MDA were inadequate in this system. Oxidant/antioxidant balance can be established at 30 or 60 weeks of age by hen organism and therefore MDA levels of tissues would not be affected by age.

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Effect of an organic and conventional rearing system on the mineral content of hen eggs

Cited by 47 publications

References 10 publications

Casca de ovo como fonte de cálcio para humanos: composição mineral e análise microbiológica

Casca de ovo como fonte de cálcio para humanos: composição mineral e análise microbiológica

Contaminants in Animal Products

Effects of conventional and organic rearing systems and hen age on oxidative stress parameters of blood and ovarian tissues in laying hens

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