Evidence map›Paper›PMID 42767183›Full record

ArticlePoultry science2026

Variation in vitelline membrane strength during the extended laying cycle in laying hens.

Yu Liu, Jiajie Yang, Biyao Sun, Lin Xuan, Wenbin Zhou, Guoxuan Huang, Yaqi Li, Tongyao Li, Lining Qin, Guiyun Xu and 1 more

Abstract read
PubMed Full text at PMC Publisher
In one paragraph

Article in Poultry science, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

0numbers the graph read from it
0cells of the map it votes in
0citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

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Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

0 citing papers in PubMed.

No citing paper in PubMed yet.

4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

11 authors.

Yu LiuNational Engineering Laboratory for Animal Breeding and MOA Key Laboratory of Animal Genetics and Breeding, College of Animal Science and Technology, China Agricultural University, Beijing, 100193, China.
Jiajie YangNational Engineering Laboratory for Animal Breeding and MOA Key Laboratory of Animal Genetics and Breeding, College of Animal Science and Technology, China Agricultural University, Beijing, 100193, China.
Biyao SunNational Engineering Laboratory for Animal Breeding and MOA Key Laboratory of Animal Genetics and Breeding, College of Animal Science and Technology, China Agricultural University, Beijing, 100193, China.
Lin XuanNational Engineering Laboratory for Animal Breeding and MOA Key Laboratory of Animal Genetics and Breeding, College of Animal Science and Technology, China Agricultural University, Beijing, 100193, China.
Wenbin ZhouNational Engineering Laboratory for Animal Breeding and MOA Key Laboratory of Animal Genetics and Breeding, College of Animal Science and Technology, China Agricultural University, Beijing, 100193, China.
Guoxuan HuangNational Engineering Laboratory for Animal Breeding and MOA Key Laboratory of Animal Genetics and Breeding, College of Animal Science and Technology, China Agricultural University, Beijing, 100193, China.
Yaqi LiNational Engineering Laboratory for Animal Breeding and MOA Key Laboratory of Animal Genetics and Breeding, College of Animal Science and Technology, China Agricultural University, Beijing, 100193, China.
Tongyao LiNational Engineering Laboratory for Animal Breeding and MOA Key Laboratory of Animal Genetics and Breeding, College of Animal Science and Technology, China Agricultural University, Beijing, 100193, China.
Lining QinNational Engineering Laboratory for Animal Breeding and MOA Key Laboratory of Animal Genetics and Breeding, College of Animal Science and Technology, China Agricultural University, Beijing, 100193, China.
Guiyun XuNational Engineering Laboratory for Animal Breeding and MOA Key Laboratory of Animal Genetics and Breeding, College of Animal Science and Technology, China Agricultural University, Beijing, 100193, China.
Jiangxia ZhengNational Engineering Laboratory for Animal Breeding and MOA Key Laboratory of Animal Genetics and Breeding, College of Animal Science and Technology, China Agricultural University, Beijing, 100193, China. Electronic address: jxzheng@cau.edu.cn.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The vitelline membrane strength (VMS) of chicken eggs is critical to liquid-egg processing, as a weakened membrane ruptures more easily during yolk and albumen separation, contaminating albumen with yolk. With the adoption of the extended laying cycle, the processing potential of eggs from older hens and stored eggs remains unclear. This study aimed to evaluate changes in VMS during the extended laying cycle and the effects of breed, storage time, and temperature, and to assess yolk-contamination risk. At each of 11 time points between 43 and 100 wk, 180 eggs per breed were collected from White Leghorn and Rhode Island Red hens and equally assigned to 0, 7, or 14 d at 25°C. An additional 180 eggs per breed were collected at 53 wk and assigned to 4, 25, or 30°C for 7 d. VMS and egg quality traits were measured using a TA-XT plus texture analyzer and an EMT-5200 egg quality analyzer, and yolk contamination proportion was calculated. Results showed that VMS across hen ages did not decline continuously throughout the laying cycle and remained above 0.86 N in White Leghorn and 0.67 N in Rhode Island Red from 72 to 100 wk. White Leghorn showed higher VMS than Rhode Island Red, with significant differences after 87 wk (P < 0.05). VMS decreased as storage time increased at 25°C. Yolk contamination showed a higher incidence of exceeding 0.2% at 14 d, a threshold relevant to baking quality. Eggs stored at 4°C had significantly higher VMS than those stored at 25°C and 30°C (P < 0.05) at 7 d. Overall, VMS was not associated with albumen height and Haugh unit (P > 0.05). Correlation analysis showed that VMS was positively associated with egg weight, yolk weight, and yolk index (P < 0.05). In conclusion, VMS did not decline continuously throughout the extended laying cycle. Given that VMS decreased with storage time at 25°C, storage at 4°C is recommended for eggs intended for liquid-egg processing.

Indexed as

Extended laying cycleLiquid eggStorage time and temperatureVitelline membrane strengthYolk contamination proportion

Identifiers

PMID42767183
PMCPMC13631904

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.