Structural and physical changes in the hen's eggshell in response to the inclusion of dietary organic minerals

Solomon, Sarah E.; Bain, M.

doi:10.1080/00071668.2012.703773

Cited by 4 publications

(2 citation statements)

References 12 publications

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“…Eggshell provides also the metabolic function for developing embryo serving as a reservoir of nutrients, especially calcium ( Hunton, 2005 ). Calciteis the dominant morphological form of calcium carbonate in egg; however, vaterite and aragonite contribute to the eggshell composition ( Solomon and Bain, 2012 ). Intact structure and good quality of eggshell resulting from mineral density limit bacterial penetration into albumen and yolk.…”

Section: Introductionmentioning

confidence: 99%

Interrelationships between Morphological, Densitometric and Mechanical Properties of Eggs in Japanese Quails (<i>Coturnix Japonica</i>)

et al. 2015

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Eggshell quality in birds results from mineral density and composition determining its mechanical endurance. The aim of the study was to determine interrelationships between morphological, densitometric and mechanical properties of eggs in Japanese quails. Twenty four eggs randomly collected from 17-week-old quails were subjected to morphological, denstiometric and mechanical evaluation using dual-energy X-ray absorptiometry (DEXA), quantitative computed tomography (QCT) and three-point bending test. Weight, height and width of eggs were positively correlated with the densitometric parameters obtained using DEXA (egg mineral density (EMD) and egg mineral content (EMC)) and QCT (total egg volume (TEvol) and total eggshell volume (TESvol)). Positive correlations were stated between TEvol and TESvol (r＝0.52; P＜0.05) and EMD and EMC r＝0.83; P＜0.05). Egg mineral density revealed positive correlations with TEvol and mean volumetric eggshell mineral density (MvESMD), while EMC was positively correlated with TEvol, TESvol and MvESMD (all P＜0.05). Eggshell breaking strength was positively correlated with MvESMD (r＝0.53; P＜0.05) and negatively correlated with eggshell thickness (r＝ −0.50; P＜0.05). In conclusion, the results obtained in this study showed numerous interrelationships between morphological, densitometric and mechanical properties of eggs in Japanese quails. Both DEXA and QCT were shown to be valuable tools for evaluation of whole egg and eggshell quality with superior prognostic value of QCT for eggshell mechanical endurance prediction. The elaborated experimental model may serve for further investigations on physiological, pharmacological, environmental, nutritional and toxicological factors influencing egg quality.

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Section: Introductionmentioning

confidence: 99%

Interrelationships between Morphological, Densitometric and Mechanical Properties of Eggs in Japanese Quails (<i>Coturnix Japonica</i>)

et al. 2015

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“…Yildiz et al, 2011; Ao and Pierce, 2013; Invernizzi et al, 2013Table 6Influence of inorganic forms of microelements and Bioplex on production parameters of heavy line parent.El-Samee et al, 2012;Solomon and Bain, 2012. …”

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confidence: 97%

Chelating forms of microelements in poultry nutrition

Stanaćev

Milošević

Stanacev³

et al. 2014

World's Poultry Science Journal

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The aim of this review was to analyse the available literature on the effects of the use of microelements and their chelated forms on performance parameters of poultry as well as the cholesterol content in the tissues of broiler chickens. Published research has indicated that the significantly lower levels of organic minerals had a positive influence on the production performance of meat poultry and improved the production performance of laying hens and their heavy line hybrid parents. This has major impacts not only in terms of more efficient utilisation of chelated minerals in poultry diets, but also for less excretion of unused inorganic minerals into the environment, which is a major problem in many countries. IntroductionChelates are a special group of complex compounds which have been known to researchers for more than eight decades. These are heterocyclic compounds in which the metal ion is bound to two or more atoms of spatially oriented functional groups on the same ligand, building hales. The most stable complexes have a structure of fivemember and six-member rings, and the stability of the chelate compared to the analogous complexes with dithiocarbamate ligands, is known as the chelating effect (Stanaćev et al., 2004).The biological activity of the metal is determined by the physical and chemical properties, and their position in the periodic table. The elements of the fourth period are biologically active, and the presence of d-electrons gives them a strong tendency towards the formation of biologically active complexes -chelates. The formation of the chelates is performed in the digestive tract during digestion, between transition metals (Fe, Zn, Cu, Mn, Co, Mo) and organic compounds whose structures are electron donating

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Effect of fish feed concentrate on egg production of laying hens

Tsoy

Adushinov²

2020

E3S Web Conf.

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The article contains materials of scientific research on the using of fish feed concentrates in the feeding of laying hens. It has been proved experimentally that this feed concentrate has a positive effect on the egg production of laying hens of the cross Haysex White. Thus, when this supplement was included in the diet of laying hens, the following results were obtained: egg production in the experimental groups increased and were higher on 13.3; 15.7 and 18.3%, the amount of egg mass-on 15.9; 18.3 and 34.6% higher than in control group.

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Structural and physical changes in the hen's eggshell in response to the inclusion of dietary organic minerals

Cited by 4 publications

References 12 publications

Interrelationships between Morphological, Densitometric and Mechanical Properties of Eggs in Japanese Quails (<i>Coturnix Japonica</i>)

Interrelationships between Morphological, Densitometric and Mechanical Properties of Eggs in Japanese Quails (<i>Coturnix Japonica</i>)

Chelating forms of microelements in poultry nutrition

Effect of fish feed concentrate on egg production of laying hens

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