Evidence map›Paper›PMID 42184740›Full record

ArticlePoultry science2026

Embryo dysplasia in obese broiler breeders reduces hatchability: Comparison of high and low abdominal fat lines.

Haixu Jiang, Bohan Cheng, Jia Zhao, Jiawen Yang, Shouzhi Wang, Zhiyong Su, Yumao Li, Peng Luan, Li Leng, Hui Li

Abstract readComparative Study
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

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

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

10 authors.

Haixu JiangKey Laboratory of Chicken Genetics and Breeding, Ministry of Agriculture and Rural Affairs, Harbin 150030, Heilongjiang, China; Key Laboratory of Animal Genetics, Breeding and Reproduction, Education Department of Heilongjiang Province, Harbin 150030, Heilongjiang, China; College of Animal Science and Technology, Northeast Agricultural University, Harbin 150030, Heilongjiang, China.
Bohan ChengKey Laboratory of Chicken Genetics and Breeding, Ministry of Agriculture and Rural Affairs, Harbin 150030, Heilongjiang, China; Key Laboratory of Animal Genetics, Breeding and Reproduction, Education Department of Heilongjiang Province, Harbin 150030, Heilongjiang, China; College of Animal Science and Technology, Northeast Agricultural University, Harbin 150030, Heilongjiang, China.
Jia ZhaoKey Laboratory of Chicken Genetics and Breeding, Ministry of Agriculture and Rural Affairs, Harbin 150030, Heilongjiang, China; Key Laboratory of Animal Genetics, Breeding and Reproduction, Education Department of Heilongjiang Province, Harbin 150030, Heilongjiang, China; College of Animal Science and Technology, Northeast Agricultural University, Harbin 150030, Heilongjiang, China.
Jiawen YangKey Laboratory of Chicken Genetics and Breeding, Ministry of Agriculture and Rural Affairs, Harbin 150030, Heilongjiang, China; Key Laboratory of Animal Genetics, Breeding and Reproduction, Education Department of Heilongjiang Province, Harbin 150030, Heilongjiang, China; College of Animal Science and Technology, Northeast Agricultural University, Harbin 150030, Heilongjiang, China.
Shouzhi WangKey Laboratory of Chicken Genetics and Breeding, Ministry of Agriculture and Rural Affairs, Harbin 150030, Heilongjiang, China; Key Laboratory of Animal Genetics, Breeding and Reproduction, Education Department of Heilongjiang Province, Harbin 150030, Heilongjiang, China; College of Animal Science and Technology, Northeast Agricultural University, Harbin 150030, Heilongjiang, China.
Zhiyong SuKey Laboratory of Chicken Genetics and Breeding, Ministry of Agriculture and Rural Affairs, Harbin 150030, Heilongjiang, China; Key Laboratory of Animal Genetics, Breeding and Reproduction, Education Department of Heilongjiang Province, Harbin 150030, Heilongjiang, China; College of Animal Science and Technology, Northeast Agricultural University, Harbin 150030, Heilongjiang, China.
Yumao LiKey Laboratory of Chicken Genetics and Breeding, Ministry of Agriculture and Rural Affairs, Harbin 150030, Heilongjiang, China; Key Laboratory of Animal Genetics, Breeding and Reproduction, Education Department of Heilongjiang Province, Harbin 150030, Heilongjiang, China; College of Animal Science and Technology, Northeast Agricultural University, Harbin 150030, Heilongjiang, China.
Peng LuanKey Laboratory of Chicken Genetics and Breeding, Ministry of Agriculture and Rural Affairs, Harbin 150030, Heilongjiang, China; Key Laboratory of Animal Genetics, Breeding and Reproduction, Education Department of Heilongjiang Province, Harbin 150030, Heilongjiang, China; College of Animal Science and Technology, Northeast Agricultural University, Harbin 150030, Heilongjiang, China.
Li LengKey Laboratory of Chicken Genetics and Breeding, Ministry of Agriculture and Rural Affairs, Harbin 150030, Heilongjiang, China; Key Laboratory of Animal Genetics, Breeding and Reproduction, Education Department of Heilongjiang Province, Harbin 150030, Heilongjiang, China; College of Animal Science and Technology, Northeast Agricultural University, Harbin 150030, Heilongjiang, China.
Hui LiKey Laboratory of Chicken Genetics and Breeding, Ministry of Agriculture and Rural Affairs, Harbin 150030, Heilongjiang, China; Key Laboratory of Animal Genetics, Breeding and Reproduction, Education Department of Heilongjiang Province, Harbin 150030, Heilongjiang, China; College of Animal Science and Technology, Northeast Agricultural University, Harbin 150030, Heilongjiang, China. Electronic address: lihui@neau.edu.cn.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Hatchability is a key indicator of reproductive performance in broiler breeders. Obesity in broiler breeder hens results in a significant reduction in hatchability. Maternal obesity can impair embryonic development in mammals. However, whether maternal obesity reduces hatchability by compromising embryonic development remains unclear in birds. This study used the hens from 24th generation of the Northeast Agricultural University broiler lines divergently selected for abdominal fat content (NEAUHLF), along with their corresponding hatching eggs. Hatchability, embryo malposition rate, embryo malformation rate, and embryonic development profiles were compared between the two lines. The results showed that hatchability of the fat line was significantly lower than that of the lean line (72.39% vs. 63.64%, P < 0.05), whereas embryonic malposition (20.64% vs. 26.59%, P = 0.049) and malformation rates (0.27% vs. 7.29%, P < 0.001) were significantly higher in the fat line. Further analysis showed that embryos from the fat line were developmentally delayed compared with those from the lean line at stages HH2, HH9, HH24, HH40, and HH43. The present study generates embryonic development profiles for genetically fat and lean broilers, highlighting that maternal obesity in poultry reduces hatchability by inducing embryonic malposition, malformation, and stage-specific developmental delay. These findings provide embryological insights into the causes of obesity-induced decline in hatchability.

Indexed as

Abdominal FatChickensEmbryonic DevelopmentObesityPoultry DiseasesAnimalsChick EmbryoFemaleBroilerEmbryonic development profilesEmbryonic malposition and malformationHatchabilityObesity

Identifiers

PMID42184740
PMCPMC13223856

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Registered trials

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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.