The effects of housing systems and age of hens on the weight and cholesterol concentration of the egg

Zemková, Ľ.; Simeonovová, Jana; Lichovnikova, Martina; Somerlíková, Kristina

doi:10.17221/2269-cjas

Cited by 46 publications

(36 citation statements)

References 10 publications

(13 reference statements)

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“…Applied housing system altered yolk and egg cholesterol concentration (P <0.01), which was found to be lower in the IC system (12.5 mg/g yolk and 211.2 mg/egg, respectively) and higher in the deep litter accommodation system (14.1 mg/g yolk and 242.6 mg/egg, respectively). (Zemkova et al, 2007). Also, in commercial hybrid eggs(ISA Brown), yolk cholesterol concentration was slightly higher for the free-range system (11.8 ± 0.30 mg/g) compared with the cage production system (11.4 ± 0.49 mg/g).…”

Section: Resultsmentioning

confidence: 90%

Chemical features, cholesterol and energy content of table hen eggs from conventional and alternative farming systems

Radu-Rusu¹,

Usturoi²,

Leahu³

et al. 2014

SA J. An. Sci.

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This study was carried out to investigate the effect of conventional farming systems for laying hens (standard cage batteries) and new alternative systems (improved cages and free range), approved by European Union (EU) poultry welfare legislation, on the chemical and nutritional quality of table eggs. The biological material consisted of eggs laid by 1200 Lohmann Brown hens, aged 27 weeks, fed similarly (a corn-wheat-soymeal diet). Conventional AOAC methods were used to analyse the eggs, and gross energy was calculated based on organic matter energy. All data were subjected to ANOVA statistical computation. The eggs produced in conventional cages compared with those laid in free-range farming conditions, presented significantly higher concentrations of total lipids (11.40 ± 0.65 g/100 g vs. 10.78 ± 0.87 g/100 g), cholesterol (211 ± 6.31 µg/egg vs. 202 ± 7.79 µg/60 g egg) and gross energy (0.36 ± 0.007 MJ/egg vs. 0.35 ± 0.012 MJ/egg). Consequently, it could be stated that under similar dietary conditions, the cage-free system influenced hens to produce eggs with a higher nutritive value than in the other systems.

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Section: Resultsmentioning

confidence: 90%

Chemical features, cholesterol and energy content of table hen eggs from conventional and alternative farming systems

Radu-Rusu¹,

Usturoi²,

Leahu³

et al. 2014

SA J. An. Sci.

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“…Previous studies reported increased hen age being associated with increased yolk weight, albumen weight, and yolk ratio (23), but decreased albumen ratio (24), eggshell quality (25), and shape index (4). However, some authors found no significant effect of hen age on egg weight (12) and eggshell traits (26). In the present study, as expected, investigated values changed throughout the laying period; the age of hens affected the egg weight, shell weight, albumen weight, yolk weight, shell breaking strength, shell thickness, shape index, albumen index, yolk index, yolk color, Haugh unit, albumen ratio, yolk ratio, and shell ratio.…”

Section: Discussionmentioning

confidence: 99%

Impact of different housing systems and age of layers on egg quality characteristics

Dikmen¹,

İpek²,

Şahan³

et al. 2017

Turk J Vet Anim Sci

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The material for the current research was obtained from 480 layers (Lohmann Brown) housed in conventional-cage (CC), enriched-cage (EC), and free-range (FR) production systems between 22 and 60 weeks of age. A total of 720 eggs were analyzed for external and internal egg quality traits.The three housing systems were located within the same research unit of Uludağ University. Two cage systems, CC and EC, were installed in a windowed and fan-ventilated cage hen house with both cage types in the same room. The FR system was located 120 m from the cage hen house.The CC system consisted of galvanized wire cages (50 × 45 × 45 cm) with a trough-type galvanized feeder, egg belt, manure belt, and nipple drinker. Each CC cage provided a total of 562.5 cm 2 floor area per hen.The EC system cages met the requirements of EU Directive 1999/74/EC. The EC system consisted of 2 tiers, and each tier consisted of 2 cages (4 EC cages). The EC

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“…Peebles et al (2000), Silversides and Scott (2001), Oloyo (2003), Van den Brand et al (2004), Rizzi and Chiericato (2005), Johnston and Gous (2007) showed that the egg weight increased with the hens' age. On the other hand, Zemková et al (2007) demonstrated that the egg weight was not influenced significantly by age. The age of hens also increased yolk weight (Rossi and Pompei 1995;Suk and Park 2001;Van den Brand et al 2004), albumen weight (Rossi and Pompei 1995;Suk and Park 2001) and yolk proportion (Rossi and Pompei 1995;Rizzi and Chiericato 2005), but decreased albumen percentage (Van den Brand et al 2004;Rizzi and Chiericato 2005).…”

mentioning

confidence: 94%

Effects of Genotype, Age and Their Interaction on Egg Quality in Brown-Egg Laying Hens

2009

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The experiment compared the effects of strain and age on egg quality characteristics in ISA Brown, Hisex Brown and Moravia BSL brown-egg laying hens. One hundred and eight ISA Brown hens, forty-five Hisex Brown and forty-five Moravia BSL 20 to 60 weeks old were housed in conventional cages (550 cm 2 per hen). Feed and water were available ad libitum. Eggs were sampled at 21-day intervals, every collecting week 150 eggs per genotype in three age periods, from 20 to 26 weeks, 37 to 43 weeks and 54 to 60 weeks of age. A total of 4,050 eggs were examined. Egg quality characteristics were affected by genotype and age. Egg weight, yolk weight and percentage, Haugh Units increased with the hens' age in all genotypes, but albumen and eggshell percentage decreased, eggshell thickness and strength improved with age. The highest egg weight (65.3 g) and yolk quality (yolk index 45.1%) were found in Moravia BSL at the end of the experiment. In contrast, the best albumen quality (albumen percentage 60.0) values were in Hisex Brown and the eggshell quality measurements (eggshell thickness 0.38 mm) were higher in ISA Brown. -egg layers, strain, ISA Brown, Hisex Brown, Moravia BSL, age, yolk, albumen, shell quality, correlation Brown

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The effects of housing systems and age of hens on the weight and cholesterol concentration of the egg

Cited by 46 publications

References 10 publications

Chemical features, cholesterol and energy content of table hen eggs from conventional and alternative farming systems

Chemical features, cholesterol and energy content of table hen eggs from conventional and alternative farming systems

Impact of different housing systems and age of layers on egg quality characteristics

Effects of Genotype, Age and Their Interaction on Egg Quality in Brown-Egg Laying Hens

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