Relationship between egg shell breakage and laying hen housing systems – an overview

Hamilton, R. M. G.; Bryden, W. L.

doi:10.1080/00439339.2021.1878480

Cited by 12 publications

(8 citation statements)

References 84 publications

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“…Eggshell quality is a crucial selection criterion in breeding programs for all corporations involved in laying hen breeding ( Knaga et al, 2019 ). This is because losses from damaged and broken eggs in commercial layer operations may account for 3 to 11% of total egg production ( Hamilton and Bryden, 2021 ). Cracks and breakage during production cost the US egg industry more than 247 USD million annually ( Singh et al, 2007 ).…”

Section: Discussionmentioning

confidence: 99%

The relationship between lysozyme gene polymorphism and quality changes during the storage of eggs derived from 2 commercial strains of Japanese quail

Knaga,

Kasperek,

Luchowska

et al. 2024

Poultry Science

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Section: Discussionmentioning

confidence: 99%

The relationship between lysozyme gene polymorphism and quality changes during the storage of eggs derived from 2 commercial strains of Japanese quail

Knaga,

Kasperek,

Luchowska

et al. 2024

Poultry Science

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“…3 Mean values within the same row with different superscripts differ significantly expressed as p < 0.05. 4 The yolk color detection range is 1-15 grades, with higher yolk color grades indicating a higher carotenoid content in the yolk [24]. 5 The formula of Haugh Unit HU = 100Log(H − 1.7W 0.37 + 7.57), H: Albumen height, and W: Egg weight.…”

Section: Organic Trace Elements Supplement Delayed Quality Deteriorat...mentioning

confidence: 99%

Organic Trace Elements Improve the Eggshell Quality via Eggshell Formation Regulation during the Late Phase of the Laying Cycle

Yang,

Deng,

Zhu

et al. 2024

Animals

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The quality of eggshells is critical to the egg production industry. The addition of trace elements has been shown to be involved in eggshell formation. Organic trace elements have been found to have higher biological availability than inorganic trace elements. However, the effects of organic trace elements additive doses on eggshell quality during the laying period of commercial laying hens required further investigation. This experiment aims to explore the potential mechanisms of different doses of organic trace elements replacing inorganic elements to remodel the eggshell quality of egg-laying hens during the laying period. A total of 360 healthy hens (Lohmann Pink, 45-week-old) were randomly divided into four treatments, with six replications per treatment and 15 birds per replication. The dietary treatments included a basal diet supplemented with inorganic iron, copper, zinc and manganese at commercial levels (CON), a basal diet supplemented with organic iron, copper, zinc and manganese at 20% commercial levels (LOT), a basal diet supplemented with organic iron, copper, zinc and manganese at 30% commercial levels (MOT), and a basal diet supplemented with organic iron, copper, zinc and manganese at 40% commercial levels (HOT). The trial lasted for 8 weeks. The results of the experiment showed that the replacement of organic trace elements did not significantly affect the production performance of laying hens (p > 0.05). Compared with inorganic trace elements, the MOT and HOT groups improved the structure of the eggshells, enhanced the hardness and thickness of the eggshells, increased the Haugh unit of the eggs, reduced the proportion of the mammillary layer in the eggshell, and increased the proportion of the palisade layer (p < 0.05). In addition, the MOT and HOT groups also increased the enzyme activity related to carbonate transport in the blood, the expression of uterine shell gland-related genes (CA2, OC116, and OCX32), and the calcium and phosphorus content in the eggshells (p < 0.05). We also found that the MOT group effectively reduced element discharge in the feces and enhanced the transportation of iron (p < 0.05). In conclusion, dietary supplementation with 30–40% organic micronutrients were able to improve eggshell quality in aged laying hens by modulating the activity of serum carbonate transport-related enzymes and the expression of eggshell deposition-related genes.

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“…The production of eggs is expected to take slightly longer to stabilise than broilers. This reason is expected because layer hens will take 6 months to consistently produce eggs (Hamilton and Bryden, 2021), compared to broilers which can be harvested after an average of 35 days (Indi et al, 2022). The outcome to import is an indication that policymakers need to understand the economic consequences on the stability of the production ecosystem and its domino effect.…”

Section: Management Of Poultry Crisismentioning

confidence: 99%

Egg and Broiler Supply in Malaysia: Issues, Challenges and Recommendations

Jamaludin

Marsal

Chowdhury

et al. 2023

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The Malaysian poultry industry, particularly the broiler and egg supply, was greatly affected due to recent global challenges such as COVID-19, the Russia-Ukraine conflict, global logistic strains, and the overall deceleration of economies. Being self-sustainable for poultry, the crisis throughout 2022 has shown how fragile the industry is in Malaysia. Based on the above perspectives, the dependency of the poultry industry on imported feed materials and its stability from external factors that support the industry needs to be considered to sustain food security. Therefore the concept of food security in a country might need to be further evaluated as a sustainable value chain rather than individual components. Understanding the value chain involved in the poultry industry is important to conclude the decisions to attain supply stability in Malaysia.

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Relationship between egg shell breakage and laying hen housing systems – an overview

Cited by 12 publications

References 84 publications

The relationship between lysozyme gene polymorphism and quality changes during the storage of eggs derived from 2 commercial strains of Japanese quail

The relationship between lysozyme gene polymorphism and quality changes during the storage of eggs derived from 2 commercial strains of Japanese quail

Organic Trace Elements Improve the Eggshell Quality via Eggshell Formation Regulation during the Late Phase of the Laying Cycle

Egg and Broiler Supply in Malaysia: Issues, Challenges and Recommendations

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