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Song X, Li S, He S, Zheng H, Li R, Liu L, Geng T, Zhao M, Gong D. Integration of Whole-Genome Resequencing and Transcriptome Sequencing Reveals Candidate Genes in High Glossiness of Eggshell. Animals (Basel) 2024; 14:1141. [PMID: 38672292 PMCID: PMC11047648 DOI: 10.3390/ani14081141] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2024] [Revised: 04/03/2024] [Accepted: 04/04/2024] [Indexed: 04/28/2024] Open
Abstract
Eggshell gloss is an important characteristic for the manifestation of eggshell appearance. However, no study has yet identified potential candidate genes for eggshell gloss between high-gloss (HG) and low-gloss (LG) chickens. The aim of this study was to perform a preliminary investigation into the formation mechanism of eggshell gloss and to identify potential genes. The eggshell gloss of 300-day-old Rhode Island Red hens was measured from three aspects. Uterine tissues of the selected HG and LG (n = 5) hens were collected for RNA-seq. Blood samples were also collected for whole-genome resequencing (WGRS). RNA-seq analysis showed that 150 differentially expressed genes (DEGs) were identified in the uterine tissues of HG and LG hens. These DEGs were mainly enriched in the calcium signaling pathway and the neuroactive ligand-receptor interaction pathway. Importantly, these two pathways were also significantly enriched in the WGRS analysis results. Further joint analysis of WGRS and RNA-seq data revealed that 5-hydroxytryptamine receptor 1F (HTR1F), zinc finger protein 536 (ZNF536), NEDD8 ubiquitin-like modifier (NEDD8), nerve growth factor (NGF) and calmodulin 1 (CALM1) are potential candidate genes for eggshell gloss. In summary, our research provides a reference for the study of eggshell gloss and lays a foundation for improving egg glossiness in layer breeding.
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Affiliation(s)
- Xiang Song
- College of Animal Science and Technology, Yangzhou University, Yangzhou 225009, China; (X.S.); (L.L.); (T.G.)
| | - Shuo Li
- Jiangsu Beinongda Agriculture and Animal Husbandry Technology Co., Ltd., Taizhou 225300, China
| | - Shixiong He
- College of Animal Science and Technology, Yangzhou University, Yangzhou 225009, China; (X.S.); (L.L.); (T.G.)
| | - Hongxiang Zheng
- College of Animal Science and Technology, Yangzhou University, Yangzhou 225009, China; (X.S.); (L.L.); (T.G.)
| | - Ruijie Li
- College of Animal Science and Technology, Yangzhou University, Yangzhou 225009, China; (X.S.); (L.L.); (T.G.)
| | - Long Liu
- College of Animal Science and Technology, Yangzhou University, Yangzhou 225009, China; (X.S.); (L.L.); (T.G.)
| | - Tuoyu Geng
- College of Animal Science and Technology, Yangzhou University, Yangzhou 225009, China; (X.S.); (L.L.); (T.G.)
| | - Minmeng Zhao
- College of Animal Science and Technology, Yangzhou University, Yangzhou 225009, China; (X.S.); (L.L.); (T.G.)
| | - Daoqing Gong
- College of Animal Science and Technology, Yangzhou University, Yangzhou 225009, China; (X.S.); (L.L.); (T.G.)
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Chen X, Li X, Zhong C, Jiang X, Wu G, Li G, Yan Y, Yang N, Sun C. Genetic patterns and genome-wide association analysis of eggshell quality traits of egg-type chicken across an extended laying period. Poult Sci 2024; 103:103458. [PMID: 38350384 PMCID: PMC10875610 DOI: 10.1016/j.psj.2024.103458] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2023] [Revised: 12/24/2023] [Accepted: 01/08/2024] [Indexed: 02/15/2024] Open
Abstract
The industry of egg-type chicken has shown a trend of extending the rearing period, with the goal of breeding chicken breeds capable of producing 500 qualified eggs by 700 d of age. However, the rapid decline in eggshell quality during the late laying period is one of the major challenges. In this study, a total of 3,261 Rhode Island Red chickens were used to measure eggshell quality traits including eggshell strength (ESS), eggshell thickness (EST), eggshell color (ESC) and eggshell gloss (ESG) at seven age points ranging from 36 to 90 wk of age. Phenotypic variations increased with the aging process, especially during the late laying period (> 55 wk), and the heritability during this period decreased by 22.7 to 81.4% compared to the initial and peak laying periods. Then we performed genome-wide association study (GWAS) to identify the genomic variants that associated with eggshell quality, with a custom Illumina 50K BeadChip, named PhenoixChip-I. The results indicated that 2 genomic regions on GGA1(23.24-25.15Mb; 175.95-176.05 Mb) were significantly (P < 4.48E-06) or suggestively (P < 8.97E-05) associated with ESS, which can explain 9.59% and 0.48% of the phenotypic variations of ESS46 and ESS36, respectively. Three genes, FRY, PCNX2, and ENSGALG00000052468, were considered to be the candidate genes for ESS. For other traits, the genome-wide suggestive SNPs were identified at each age point, exhibiting a certain trend with aging process. Additionally, SNP enrichment analysis and functional annotation of cross-tissue regulatory elements to ESS36 revealed a high concentration of enhancer elements specific to shell gland and kidney tissues. This study, deepened our knowledge of eggshells and laying a valued scientific foundation for chicken molecular breeding.
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Affiliation(s)
- Xiaoman Chen
- State Key Laboratory of Animal Biotech Breeding, National Engineering Laboratory for Animal Breeding, China Agricultural University, Beijing 100193, China
| | - Xiaochang Li
- State Key Laboratory of Animal Biotech Breeding, National Engineering Laboratory for Animal Breeding, China Agricultural University, Beijing 100193, China
| | - Conghao Zhong
- State Key Laboratory of Animal Biotech Breeding, National Engineering Laboratory for Animal Breeding, China Agricultural University, Beijing 100193, China
| | - Xinwei Jiang
- State Key Laboratory of Animal Biotech Breeding, National Engineering Laboratory for Animal Breeding, China Agricultural University, Beijing 100193, China
| | - Guiqin Wu
- Beijing Engineering Research Center of Layer, Beijing, 101206, China
| | - Guangqi Li
- Beijing Engineering Research Center of Layer, Beijing, 101206, China
| | - Yiyuan Yan
- Beijing Engineering Research Center of Layer, Beijing, 101206, China
| | - Ning Yang
- State Key Laboratory of Animal Biotech Breeding, National Engineering Laboratory for Animal Breeding, China Agricultural University, Beijing 100193, China
| | - Congjiao Sun
- State Key Laboratory of Animal Biotech Breeding, National Engineering Laboratory for Animal Breeding, China Agricultural University, Beijing 100193, China.
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Xu W, Mu R, Gegen T, Luo J, Xiao Y, Ou S, Wu Q, Zuo Y, Chen Z, Li F. Comparative analysis of hepatic transcriptomes and metabolomes of Changshun green-shell laying hens based on different green eggshell color intensities. Poult Sci 2024; 103:103220. [PMID: 37980748 PMCID: PMC10685025 DOI: 10.1016/j.psj.2023.103220] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2023] [Revised: 10/13/2023] [Accepted: 10/17/2023] [Indexed: 11/21/2023] Open
Abstract
The eggshell color of avian species is an important trait that is predominantly determined by the pigments biliverdin and protoporphyrin. Various factors affect eggshell pigment deposition and coloration; however, the underlying mechanisms remain unclear. We analyzed the hepatic transcriptomes and metabolomes of Changshun green-shell hens laying dark green and light green eggs to investigate the potential role of the liver in regulating the intensity of the green eggshell color. In total, 350 differentially expressed genes and 211 differentially altered metabolites were identified. Gene set enrichment analysis revealed that the enriched pathways and Gene Ontology (GO) terms were mainly associated with energy, immunity, and nutrient metabolism. Metabolite set enrichment analysis revealed that the enriched pathways were mainly associated with amino acid, vitamin, bile acid, and lipid metabolism. Moreover, gene-metabolite interaction network analysis revealed 1 subnetwork. Most genes and metabolites in this subnetwork were determined to be related to melanin metabolism and transport. In conclusion, our results suggest that hepatic melanin metabolism and transport are critical for eggshell coloration. Six candidate genes (CDKN2B, DDC, PYCR1, ABCG5, SLC3A1, and P2RX2) and 7 candidate metabolites (serotonin, 5-hydroxyindoleacetic acid, ornithine, acetylcholine, L-tryptophan, D-ornithine, and ADP) were suggested to play important roles in this process. Meanwhile, this study suggests that changes in hepatic energy metabolism, immune status, antioxidation activity, nutrient availability, and bile acid synthesis can impair eggshell coloration.
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Affiliation(s)
- Wenbin Xu
- College of Biological Science and Agriculture, Qiannan Normal University for Nationalities, Duyun 558000, China; Qiannan Key Laboratory of Applied Biotechnology for Livestock and Poultry, Duyun 558000, China; College of Animal Sciences, Zhejiang University, Hangzhou 310058, China
| | - Ren Mu
- College of Biological Science and Agriculture, Qiannan Normal University for Nationalities, Duyun 558000, China; Qiannan Key Laboratory of Applied Biotechnology for Livestock and Poultry, Duyun 558000, China.
| | - Tuya Gegen
- Qiannan Key Laboratory of Applied Biotechnology for Livestock and Poultry, Duyun 558000, China; Library, Qiannan Normal University for Nationalities, Duyun 558000, China
| | - Jiaxiang Luo
- College of Biological Science and Agriculture, Qiannan Normal University for Nationalities, Duyun 558000, China
| | - Yang Xiao
- College of Biological Science and Agriculture, Qiannan Normal University for Nationalities, Duyun 558000, China
| | - Shunnian Ou
- College of Biological Science and Agriculture, Qiannan Normal University for Nationalities, Duyun 558000, China
| | - Qi Wu
- College of Biological Science and Agriculture, Qiannan Normal University for Nationalities, Duyun 558000, China; Qiannan Key Laboratory of Applied Biotechnology for Livestock and Poultry, Duyun 558000, China
| | - Yongsong Zuo
- College of Biological Science and Agriculture, Qiannan Normal University for Nationalities, Duyun 558000, China; Qiannan Key Laboratory of Applied Biotechnology for Livestock and Poultry, Duyun 558000, China
| | - Zhi Chen
- College of Biological Science and Agriculture, Qiannan Normal University for Nationalities, Duyun 558000, China; Qiannan Key Laboratory of Applied Biotechnology for Livestock and Poultry, Duyun 558000, China
| | - Fangwei Li
- Guizhou Changshun Tiannong Green Shell Laying Hen Industrial Co. Ltd., Chang Shun 550700, China
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Li Q, Zhou W, Wang Q, Fu D. Research on Online Nondestructive Detection Technology of Duck Egg Origin Based on Visible/Near-Infrared Spectroscopy. Foods 2023; 12:foods12091900. [PMID: 37174438 PMCID: PMC10178549 DOI: 10.3390/foods12091900] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2023] [Revised: 04/29/2023] [Accepted: 05/01/2023] [Indexed: 05/15/2023] Open
Abstract
As living standards rise, people have higher requirements for the quality of duck eggs. The quality of duck eggs is related to their origin. Thus, the origin traceability and identification of duck eggs are crucial for protecting the rights and interests of consumers and preserving food safety. As the world's largest producer and consumer of duck eggs, China's duck egg market suffers from a severe lack of duck egg traceability and rapid origin identification technology. As a result, a large number of duck eggs from other regions are sold as products from well-known brands, which seriously undermines the rights and interests of consumers and is not conducive to the sound development of the duck egg industry. To address the above issues, this study collected visible/near-infrared spectral data online from duck eggs of three distinct origins. To reduce noise in the spectral data, various pre-processing algorithms, including MSC, SNV, and SG, were employed to process the spectral data of duck eggs in the range of 400-1100 nm. Meanwhile, CARS and SPA were used to select feature variables that reflect the origin of duck eggs. Finally, classification models of duck egg origin were developed based on RF, SVM, and CNN, achieving the highest accuracy of 97.47%, 98.73%, and 100.00%, respectively. To promote the technology's implementation in the duck egg industry, an online sorting device was built for duck eggs, which mainly consists of a mechanical drive device, spectral software, and a control system. The online detection performance of the machine was validated using 90 duck eggs, and the final detection accuracy of the RF, SVM, and CNN models was 90%, 91.11%, and 94.44%, with a detection speed of 0.1 s, 0.3 s, and 0.5 s, respectively. These results indicate that visible/near-infrared spectroscopy can be exploited to realize rapid online detection of the origin of duck eggs, and the methodologies used in this study can be immediately implemented in production practice.
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Affiliation(s)
- Qingxu Li
- Department of Computer Science, Anhui University of Finance and Economics, Bengbu 233030, China
| | - Wanhuai Zhou
- Department of Computer Science, Anhui University of Finance and Economics, Bengbu 233030, China
| | - Qiaohua Wang
- College of Engineering, Huazhong Agricultural University, Wuhan 430070, China
| | - Dandan Fu
- College of Mechanical Engineering, Wuhan Polytechnic University, Wuhan 430023, China
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Cheng X, Ma Y, Li X, Liu Y, Zhang R, Zhang Y, Fan C, Qu L, Ning Z. Structural characteristics of speckled chicken eggshells and their effect on reproductive performance. Poult Sci 2022; 102:102376. [PMID: 36565627 PMCID: PMC9801207 DOI: 10.1016/j.psj.2022.102376] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2022] [Revised: 11/28/2022] [Accepted: 11/30/2022] [Indexed: 12/08/2022] Open
Abstract
Speckles are common on the brown eggshells of chicken eggs, especially for aged hens. They are important as they affect the consumer preference and economic value of eggs. The cause of speckles in eggshells is still unclear. In this study, we verified the difference of eggshell quality between speckled eggs and normal eggs. Structural characteristics of speckled eggshells were investigated using a scanning electron microscope. Results showed no significant difference in the eggshell quality between normal eggs and speckled eggs, except for a lower eggshell color-L value in the latter. More materials deposited between vertical crystal layer and cuticle layer in the speckled shell region, leading to the thicker eggshell than adjacent normal area. The relative content of protoporphyrin IX was significantly higher in the speckled area than in the adjacent normal area of the eggshells. In addition, there was no significant differences in productive and reproductive performance between hens that laid normal eggs or speckled eggs, except for a lower hatchability of the speckled eggs. In conclusion, we infer that the uneven distribution of eggshell pigment protoporphyrin IX leads to the formation of speckled eggs. This is the first study to establish the characteristics and causes of speckled eggshells. Moreover, this study provides novel insights into external egg quality and a foundation for the in-depth study of speckled eggshells.
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Affiliation(s)
- Xue Cheng
- National Engineering Laboratory for Animal Breeding, College of Animal Science and Technology, China Agricultural University, Beijing 100193, China
| | - Ying Ma
- National Engineering Laboratory for Animal Breeding, College of Animal Science and Technology, China Agricultural University, Beijing 100193, China
| | - Xinghua Li
- National Engineering Laboratory for Animal Breeding, College of Animal Science and Technology, China Agricultural University, Beijing 100193, China
| | - Yuchen Liu
- National Engineering Laboratory for Animal Breeding, College of Animal Science and Technology, China Agricultural University, Beijing 100193, China
| | - Ruiqi Zhang
- National Engineering Laboratory for Animal Breeding, College of Animal Science and Technology, China Agricultural University, Beijing 100193, China
| | - Yalan Zhang
- National Engineering Laboratory for Animal Breeding, College of Animal Science and Technology, China Agricultural University, Beijing 100193, China
| | - Cuidie Fan
- Hebei Rongde Poultry Breeding Company Limited, Hebei 053000, China
| | - Lujiang Qu
- National Engineering Laboratory for Animal Breeding, College of Animal Science and Technology, China Agricultural University, Beijing 100193, China
| | - Zhonghua Ning
- National Engineering Laboratory for Animal Breeding, College of Animal Science and Technology, China Agricultural University, Beijing 100193, China,Corresponding authors:
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Fathi M, Aloyaydi B, Al-Homidan I, Abou-Emera O. Influence of strain and flock age on geometrical and mechanical attributes of eggs produced from Japanese quail birds. Anim Sci J 2021; 92:e13628. [PMID: 34469067 DOI: 10.1111/asj.13628] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2021] [Revised: 08/02/2021] [Accepted: 08/05/2021] [Indexed: 11/25/2022]
Abstract
We investigated how the geometrical and mechanical properties of eggshell of Japanese quail are affected by strain and flock age. Two strains of quail (white and gray) were used in the current experiment. The results showed that there was no significant difference for all geometric measurements due to strain effect. Eggs produced from the older birds showed significantly higher (P < 0.01) values compared with younger age for all studied traits. Eggs produced from quails at 22 weeks had a significantly (P < 0.01) darker yolk color than that of the younger age. Superiority in shell thickness, shell weight, and breaking force was detected in eggs of gray quails compared with white quails. On the other hand, the eggs from white quails had significantly higher values for static stiffness and Young's modulus as compared with those of gray counterparts. A significant decrease (P < 0.01) was found for fracture toughness and Young's modulus in eggs of aged birds. A significant negative relationship was found between the breaking force and both static stiffness and Young's modulus. A significant positive relationship was observed between breaking force and both shell thickness and shell percentage. The phenotypic correlation between eggshell breaking force and toughness was relatively high.
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Affiliation(s)
- Moataz Fathi
- Department of Animal Production and Breeding, College of Agriculture and Veterinary Medicine, Qassim University, Buraydah, Al-Qassim, Saudi Arabia.,Department of Poultry Production, Faculty of Agriculture, Ain Shams University, Cairo, Egypt
| | - Bandar Aloyaydi
- Department of Mechanical Engineering, College of Engineering, Qassim University, Buraydah, Al-Qassim, Saudi Arabia
| | - Ibrahim Al-Homidan
- Department of Animal Production and Breeding, College of Agriculture and Veterinary Medicine, Qassim University, Buraydah, Al-Qassim, Saudi Arabia
| | - Osama Abou-Emera
- Department of Animal Production and Breeding, College of Agriculture and Veterinary Medicine, Qassim University, Buraydah, Al-Qassim, Saudi Arabia.,Agriculture Research Centre, Animal Production Research Institute, Giza, Egypt
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