Effect of housing system on the calcium requirement of laying hens and on eggshell quality

Lichovnikova, Martina; Zeman, Ladislav

doi:10.17221/375-cjas

Cited by 36 publications

(27 citation statements)

References 21 publications

(18 reference statements)

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“…These results disagree with those of van den Brand et al (2004), who recorded greater eggshell thickness and strength in eggs from outdoor layers. However, Lichovníková and Zeman (2008) reported higher eggshell strength in eggs from cages. Also Hidalgo et al (2008) showed the effect of housing on eggshell thickness and strength.…”

Section: Discussionmentioning

confidence: 91%

“…The rates of calcium deposition in shells of eggs produced in the two systems are possibly different. Lichovníková and Zeman (2008) showed that calcium content in the shell and calcium intake were higher in cages than on litter. Structural differences in the eggshell formation according to a housing system may be the result of variable pore density in eggs from cages and litter.…”

Section: Discussionmentioning

confidence: 98%

“…Moorthy et al (2000), Leyendecker et al (2001a) and Jenderal et al (2004) reported higher egg weights in cages, while Tůmová and Ebeid (2005), Pištěková et al (2006), Zemková et al (2007) found out heavier eggs on litter. Quality traits such as egg shell thickness, Haugh unit score and yolk index were reported to be higher in cages than on litter (Roland et al, 1997;Moorthy et al, 2000;Tůmová and Ebeid, 2005;Lichovníková and Zeman, 2008). These results are presumably contradictory because laying hens were kept in different conditions and different strains were used.…”

mentioning

confidence: 99%

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Interaction between housing system and genotype in relation to internal and external egg quality parameters

Tůmová¹,

Englmaierová²,

Ledvinka³

et al. 2011

CZECH J ANIM SCI

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ABSTRACT:The effect of three housing systems (conventional cages, enriched cages and litter) on egg quality parameters was evaluated in two experiments with four brown laying strains ISA Brown, Hisex Brown, Bovans Brown and Moravia BSL. During 40 weeks of lay the total number of 7200 eggs was produced and analysed for egg weight, egg component weight and eggshell quality indicators. In 60 eggs, pore density in the small-end, large-end and equatorial areas was determined. Significant interactions between genotype and housing were found out in egg weight (P ≤ 0.001), yolk and albumen weight (P ≤ 0.001) and yolk colour (P ≤ 0.001). Haugh units were the highest in eggs laid in cages and the lowest in the ISA Brown strain. Eggshell quality indicators were affected more by genotype than by housing. The interaction between genotype and housing was not significant for eggshell thickness but it was significant for eggshell weight and strength. Although eggshell thickness was lower in eggs produced in cages, eggshell strength was higher. A significant negative correlation was found out between pore density and housing system. Results of the study suggest that the ability of a strain to produce eggs of high quality in a particular housing system should be considered, even within brown strains.

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Section: Discussionmentioning

confidence: 91%

Section: Discussionmentioning

confidence: 98%

mentioning

confidence: 99%

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Interaction between housing system and genotype in relation to internal and external egg quality parameters

Tůmová¹,

Englmaierová²,

Ledvinka³

et al. 2011

CZECH J ANIM SCI

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“…The utilisation of calcium is irregularly decreased in the laying cycle period by the age of hens. Lichovníková and Zeman (2008) presented the ratio of calcium in the eggshell to calcium intake (%) 47.6% in the cages to 38.7% on deep litter at the beginning of the laying cycle period and 44.2% to 38.9% at the end of the laying cycle period. In our experiment the calcium utilisation was found to be lower (30.65% in the 1 st cycle and 29.09% in the 2 nd cycle in the first experiment and 31.62; 29.91 and 20.45% in the 1 st , 2 nd and 3 rd cycle in the second experiment).…”

Section: Discussionmentioning

confidence: 99%

“…In the experiment (Lichovníková and Zeman, 2008) the rate of calcium intake deposited in the eggshells was higher in cage systems compared with a floor system depending on the age of laying hens. Řezáč et al (2000) recorded that the plasma calcium level was higher in hens with cracked eggshells than in hens with unbroken eggshells but this difference was not significant.…”

mentioning

confidence: 87%

Eggshell quality and calcium utilization in feed of hens in repeated laying cycles

Arpášová¹,

Halaj²,

Halaj³

2010

CZECH J ANIM SCI

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Hens of the laying hybrid Shaver Starcross 288 were used in two consequential experiments. The first experiment (for 10 months) was conducted on hens at the age from 18 to 60 weeks (1st cycle; n = 50) and moulted hens after 10 months laying from 70 to 110 weeks of age (2nd cycle; n = 50). For the second experiment (for 8 months) in the 1st cycle 18 weeks old hens were bought (n = 60) and hens from the first experiment after moulting were used in the 2nd and 3rd cycle (n = 32 and n = 28). During the experiments eggshell qualitative parameters and calcium utilisation (%) were determined. The results indicate that the percentage of eggshell decreased with the increasing number of cycles. The significant correlation of the eggshell proportion and the age of hens was higher in long, advanced cycles (P < 0.05). The shell strength in both experiments decreased slightly in relation to the age of hens and repeated laying cycles. The shell deformation had an opposite trend to the shell strength, i.e. it increased with the increasing laying. The average shell thickness showed a decrease in the repeated laying cycles, more significant in shorter cycles (P < 0.01). The specific shell gravity maintained balanced values both in cycles and by the age of hens. The shell density in all cycles in both experiments showed a decreasing tendency in relation to the age of hens. In dietary calcium utilization for the shell formation a significant decrease was recorded in the second cycles after moulting (P < 0.05).

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A new approach to analyze the dynamic strength of eggs

et al. 2016

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The mechanical behavior of eggshell was determined in terms of average rupture force and corresponding deformation. For the experiment, we selected goose eggs (Anser anser f. domestica). Samples of eggs were compressed along their x-axis and z-axis. The effect of the loading orientation can be described in terms of the eggshell contour curvature. Two different experimental methods were used: compression between two plates (loading rates up to 5 mm/s) and the Hopkinson split pressure bar technique. This second method enables achieving loading rates up to about 17 m/s. The response of goose eggs to this high loading rate was characterized also by simultaneous measurement of the eggshell surface displacements using a laser vibrometer and by the measurement of both circumferential and meridian strains. Keywords Eggs . Compression . Dynamic loading . HSPB technique . Rupture forceThe egg is a packaged food. One of the important quality aspects of packaged eggs is the mechanical strength of the egg shell [1]. Breaking of the eggshell is due to the forces acting on the eggs under static and/or quasi-static conditions, as at the bottom of the pile of loaded trays, but the greatest part occurs under dynamic conditions, e.g., when an egg falls on to the cage bottom at oviposition and in the many other events, which are collected by Carter [2]. The dynamic loading can also lead to the vibration of the egg liquid products. The eggs thus serve

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Effect of housing system on the calcium requirement of laying hens and on eggshell quality

Cited by 36 publications

References 21 publications

Interaction between housing system and genotype in relation to internal and external egg quality parameters

Interaction between housing system and genotype in relation to internal and external egg quality parameters

Eggshell quality and calcium utilization in feed of hens in repeated laying cycles

A new approach to analyze the dynamic strength of eggs

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