Physical and mechanical characteristics of Hisex Brown hen eggs from three different housing systems

Galić, Ante; Filipović, Davor; Janječić, Zlatko; Bedeković, Dalibor; Kovačev, I.; Čopec, Krešimir; Pliestić, Stjepan

doi:10.4314/sajas.v49i3.7

Cited by 15 publications

(14 citation statements)

References 25 publications

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“…The albumen percentage was the highest in eggs from conventional system (P <0.01), in accordance with Galic et al (2019). According to Castellini et al (2006), albumen deposition is greatly affected by the level of dietary protein.…”

Section: Resultssupporting

confidence: 71%

“…The present results agree with those of Rizzi and Marangon (2012), who observed a negative correlation between yolk to albumen ratio and egg weight. Galic et al (2019) found egg weight was highly correlated with albumen weight. The shell constituted a smaller (P <0.05) percentage of egg weight for hens in CON than those in the FR and ORG systems.…”

Section: Resultsmentioning

confidence: 83%

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Fatty acid profile and oxidative stability of egg yolks from hens under different production systems

Mierliţă¹

2020

SA J. An. Sci.

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AbstractThis study was carried out to compare the egg quality, fatty acid (FA) profiles, and oxidative stability of yolks from hens maintained in cages and fed a conventional diet (CON), those fed a conventional diet with free access to outdoor grassy area (5 m2/hens) under free-range conditions (FR), and those fed an organic diet and free access to outdoor grassy area (10 m2/hens) under in organic system (ORG). Heavier eggs were produced by CON, while percentages of yolk and eggshell were greater in eggs of FR and ORG hens. The FR and ORG hens produced eggs that contained significantly more monounsaturated fatty acids (MUFAs) but less polyunsaturated fatty acids (PUFAs) than CON hens. Eggs from FR and ORG hens had a lower concentration of PUFA n-6 because of less C18:2 n-6 (linoleic acid) and a higher percentage of PUFA n-3 (eicosapentaenoic acid). Consequently, the ratio of PUFA n-6 to n-3 for eggs from FR and ORG hens was healthier for consumers compared with CON. However, eggs from the ORG hens had a similar FA profile to those from the FR hens. No significant differences were noted in hypocholesterolaemic (HI), atherogenic (AI) and thrombogenic indexes. Antioxidant concentration was greatest in eggs from ORG hens (retinol-14.32 μg/g and α-tocopherol-98.7 μg/g/yolk). Thus, the oxidative stability of eggs measured after storage at 4°Cfor 15 or 30 days was improved. The best eggs in terms of nutritional value were from the ORG system in which hens lived in their natural environment. Keywords: antioxidants, conventional production, egg quality, free range production, malonaldehyde, organic production

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Section: Resultssupporting

confidence: 71%

Section: Resultsmentioning

confidence: 83%

Fatty acid profile and oxidative stability of egg yolks from hens under different production systems

Mierliţă¹

2020

SA J. An. Sci.

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“…The housing system can affect egg quality in commercial laying flocks. Galic et al. (2019) decided that the housing system of laying hens has a significant effect on egg quality.…”

Section: Discussionmentioning

confidence: 99%

Consequences of various housing systems and dietary supplementation of thymol, carvacrol, and euganol on performance, egg quality, blood chemistry, and antioxidant parameters

et al. 2020

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The present work was carried out to investigate the influences of housing system and dietary essential oils ( EOs ) supplementation to laying hens on the productive performance, egg quality, immunity, antioxidant parameters, and hematology. A factorial arrangement (2 × 4) was performed, including 2 housing systems and 4 different types of EOs (without EOs, thymol, carvacrol, and euganol) during the production stages (from 28–78 wk of age). Birds were randomly divided into 2 groups with each of 2,000 birds. The first group was moved to laying cages while the second group was a floor reared. Each group was randomly divided into 4 groups (5 replicates of 100 birds each): The first were considered as a control group, and the second, third, and fourth groups were treated with thymol, carvacrol, and euganol EO, respectively. The results showed that hens reared in cage system had higher egg weight ( P < 0.05), egg production, egg mass, and feed intake and better feed conversion ratio ( P < 0.001) than those reared in the floor system. Blood picture values (except white blood cells), phagocytic index, phagocytic activity, and blood chemistry parameters (except calcium, phosphorus, and urea values) of laying hens were not affected ( P > 0.05) by housing system. The groups fed EOs showed a rapid improvement ( P < 0.001) in the egg production%, egg weight, egg mass, and egg quality. Thymol group had the highest egg production ( P < 0.001). Thymol and eugenol groups had the highest egg weight, egg mass, and egg quality ( P < 0.001). The groups fed diets containing thymol or eugenol consumed lower feed and had better feed conversion ratio ( P < 0.001) than the control group. Immunity indices (phagocytic activity [ P < 0.05], avian influenza [AIH5 and AIH9], P < 0.001) were improved with the presence of EOs in the laying hen diet. These results strongly suggest that dietary EO supplementation could be a successful attempt to improve the productive performance, egg quality, and immunity of laying hens.

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“…Englmaierová et al [60] found that housing technologies significantly influenced egg weight, and while eggs produced in aviary and enriched cage systems had higher average weights, eggs originating from barn housing systems had lower weights. Galic et al [61] reported the same result, i.e., the largest and heaviest eggs were produced in enriched cage systems. Perić et al [54] compared eggs from traditional caged systems, omega-3-enriched eggs and eggs from free-range housing in terms of their external and internal properties which affect egg quality, using samples from one of the largest supermarkets.…”

Section: Egg Quality Issuesmentioning

confidence: 55%

“…In addition, in the examined sample, the yolk of free-range eggs had the lightest color, which is a finding completely opposite to consumer expectations [62]. According to other research [61,63], free-range eggs and their yolks were heavier in weight and the latter was more intensely colored, while the shell of eggs produced in caged housing systems was thicker. At the same time, other indicators of egg quality (e.g., protein and shell weight, protein and yolk pH) were not affected by the given housing technology [63].…”

Section: Egg Quality Issuesmentioning

confidence: 76%

Sustainability and Quality Aspects of Different Table Egg Production Systems: A Literature Review

Molnár

Szöllősi

2020

Sustainability

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Eggs are of considerable importance in feeding the population, as they are a relatively inexpensive and complex food source of very high biological value. The daily animal protein requirement for the human body can be covered with eggs in the cheapest way and with the lowest environmental impact. As animal welfare, as well as environmental and health awareness issues, become increasingly prominent in developed countries, consumer demand for eggs has also changed significantly in recent years, with an increasing number of consumers buying eggs produced in non-cage housing systems. In recent years, cage housing has been more frequently debated in EU member states. An initiative was launched in 2018 to end cage housing technologies and the sale of eggs produced in this way. However, in addition to animal welfare, a number of other factors need to be considered in relation to sustainable production. For this reason, the aim of this research is to provide a comprehensive overview of the sustainability issues of various housing technologies, as well as quality factors affecting consumer health and egg consumption based on the relevant international references and databases. Although there is a growing demand for products produced in non-cage housing systems due to the increasing relevance of environmental protection, health awareness and animal welfare issues in Western societies, research has shown that non-caged production is not the best solution for environmentally, socially and economically sustainable egg production.

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Physical and mechanical characteristics of Hisex Brown hen eggs from three different housing systems

Cited by 15 publications

References 25 publications

Fatty acid profile and oxidative stability of egg yolks from hens under different production systems

Fatty acid profile and oxidative stability of egg yolks from hens under different production systems

Consequences of various housing systems and dietary supplementation of thymol, carvacrol, and euganol on performance, egg quality, blood chemistry, and antioxidant parameters

Sustainability and Quality Aspects of Different Table Egg Production Systems: A Literature Review

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