Evidence map›Paper›PMID 31888457›Full record

ArticleBMC genetics2019

Effects of cage and floor rearing system on the factors of antioxidant defense and inflammatory injury in laying ducks.

Yang Zhang, Tiantian Gu, Yong Tian, Li Chen, Guoqin Li, Wei Zhou, Guofa Liu, Xinsheng Wu, Tao Zeng, Qi Xu and 2 more

Open access · diamondAbstract read
In one paragraph

Article in BMC genetics, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers.

0numbers the graph read from it
0cells of the map it votes in
12citing papers in PubMed
0.7field-weighted citation impact, top 30% of its field
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

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

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

12 citing papers in PubMed, 26 citations in OpenAlex.

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  7. Enhancing the breeding gene pool of wheat using accessions in gene banks as demonstrated by the Watkins collection.TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik · 2025
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  9. MiR-106a-5p by TargetingAnimals : an open access journal from MDPI · 2024
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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

12 authors at 2 institutions in 2 countries.

Yang ZhangJiangsu Key Laboratory for Animal Genetic, Breeding and Molecular Design, Yangzhou University, Yangzhou, 225009, Jiangsu, China.
Tiantian GuJiangsu Key Laboratory for Animal Genetic, Breeding and Molecular Design, Yangzhou University, Yangzhou, 225009, Jiangsu, China.
Yong TianInstitute of Animal Husbandry and Veterinary Medicine, Zhejiang Academy of Agricultural Sciences, Zhejiang, 310021, Hangzhou, China.
Li ChenInstitute of Animal Husbandry and Veterinary Medicine, Zhejiang Academy of Agricultural Sciences, Zhejiang, 310021, Hangzhou, China.
Guoqin LiInstitute of Animal Husbandry and Veterinary Medicine, Zhejiang Academy of Agricultural Sciences, Zhejiang, 310021, Hangzhou, China.
Wei ZhouGuiliu Animal Husbandry Company, Zhoukou, 450000, Henan, China.
Guofa LiuGuiliu Animal Husbandry Company, Zhoukou, 450000, Henan, China.
Xinsheng WuJiangsu Key Laboratory for Animal Genetic, Breeding and Molecular Design, Yangzhou University, Yangzhou, 225009, Jiangsu, China.
Tao ZengInstitute of Animal Husbandry and Veterinary Medicine, Zhejiang Academy of Agricultural Sciences, Zhejiang, 310021, Hangzhou, China.
Qi XuJiangsu Key Laboratory for Animal Genetic, Breeding and Molecular Design, Yangzhou University, Yangzhou, 225009, Jiangsu, China.
Guohong ChenJiangsu Key Laboratory for Animal Genetic, Breeding and Molecular Design, Yangzhou University, Yangzhou, 225009, Jiangsu, China. ghchen@yzu.edu.cn.ORCID 0000-0002-2413-5589
Lizhi LuInstitute of Animal Husbandry and Veterinary Medicine, Zhejiang Academy of Agricultural Sciences, Zhejiang, 310021, Hangzhou, China. lulizhibox@163.com.
ZheJiang Academy of Agricultural Sciences · CNYangzhou University · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundCage-rearing in laying ducks, as a novel rearing system, not only fundamentally solves the pollution problem of the duck industry and improve bio-safety and product quality but also exhibits more benefits by implementing standardized production compared with the floor-rearing. Of course, this system also brings some welfare problems and stress injuries to layers due to lack of water environment and limited activities in the cages. However, the effects on the factors of antioxidant defense and inflammatory injury in the early cage stage are not well-understood.

resultsIn this study, eighty Shaoxing layers were reared on floor and in cages from 12 weeks of age. The ducks were caged 1, 2, 4, 7, and 10 days, the factors of antioxidant defense and inflammatory injury were investigated. The results showed that the caged ducks suffered liver injury to a certain extent when the ducks were just put into the cages. Analysis of antioxidant enzyme activities indicated that the different rearing system could not affect the change of antioxidant capacities, while the liver malondialdehyde (MDA) level was significant higher in the 2-d, 7-d, and 10-d ducks compared with the 1-d ducks during the change of days, while catalase (CAT) activity showed the opposite results. Additionally, quantitative real-time PCR (qRT-RCR) revealed that the relative mRNA levels of endoplasmic reticulum (ER) stress-related gene (CHOP and GRP78) were significantly upregulated in cage rearing ducks compared to that of the floor rearing ducks. Moreover, the mRNA levels of inflammatory cytokines including cycloxygenase-2 (COX-2), nitric oxide synthase (iNOS), Interleukin 1 beta (IL-1β), Interleukin 2 (IL-2) and Interleukin 6 (IL-6), were also increased significantly in caged layers.

conclusionsTaken together, although antioxidant defense has no obvious effect on cage stress, the stress levels of laying ducks vary greatly in the early cage stage, which not only caused liver tissue damage to some extent, but also resulted in increases in the expression of the factors of inflammatory injury. Therefore, we recommend that anti-stress agents should be added in the feed to alleviate the stress in the early cage stage.

Indexed as

AnimalsAntioxidantsCatalaseCyclooxygenase 2DucksEndoplasmic Reticulum StressFemaleGene Expression RegulationHousing, AnimalInterleukin-1betaInterleukin-2Interleukin-6LiverMalondialdehydeNitric Oxide Synthase Type IIAntioxidantsCatalaseCyclooxygenase 2Interleukin-1betaInterleukin-2Interleukin-6MalondialdehydeNitric Oxide Synthase Type IIAntioxidant enzymesCage rearingDuckInflammatory cytokines

Identifiers

PMID31888457
PMCPMC6937681
OpenAlexW2998488322

What OpenQuestion holds

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LicenceCC BY
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Registered trials

None linked

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.