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Establishment and application of a PCR assay for the identification of virulent and attenuated duck plague virus DNA in cotton swabs. Poult Sci 2023; 102:102555. [PMID: 36907124 PMCID: PMC10024229 DOI: 10.1016/j.psj.2023.102555] [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: 10/21/2022] [Revised: 01/28/2023] [Accepted: 01/30/2023] [Indexed: 02/05/2023] Open
Abstract
Duck plague is an acute, febrile, and septic infectious disease caused by duck plague virus (DPV), which causes serious harm to the duck industry in China. Ducks latently infected with DPV display a clinically healthy state, which is one of the epidemiological characteristics of duck plague. In the present study, to rapidly distinguish vaccine-immunized ducks from wild virus-infected ducks during production, a PCR assay based on the newly identified LORF5 fragment was developed to effectively and accurately identify viral DNA in cotton swab samples and was used to assess artificial infection models and clinical samples. The results showed that the established PCR method had good specificity and that only the virulent and attenuated DNA of duck plague virus was specifically amplified, as the results for the detection of common duck pathogens (duck hepatitis B virus, duck Tembusu virus, duck hepatitis A virus type 1, novel duck reovirus, Riemerella anatipestifer, Pasteurella multocida, and Salmonella) were negative. The amplified fragments of virulent and attenuated strains were 2,454 bp and 525 bp, and their minimum detection amounts were 0.46 pg and 46 pg, respectively. The detection rate of the virulent and attenuated DPV strains in duck oral and cloacal swabs was lower than that of the gold standard PCR method (GB-PCR, which is unable to distinguish virulent and attenuated strains), and cloacal swabs from clinically healthy ducks were more suitable for detection than oral swabs. In conclusion, the PCR assay established in the present study can be used as a simple and effective method for the clinical screening of ducks that are latently infected with virulent strains of DPV and shedding virus, which can provide technical support for the elimination of duck plague from duck farms.
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Liang Z, Guo J, Yuan S, Cheng Q, Zhang X, Liu Z, Wang C, Li Z, Hou B, Huang S, Wen F. Pathological and Molecular Characterization of a Duck Plague Outbreak in Southern China in 2021. Animals (Basel) 2022; 12:ani12243523. [PMID: 36552444 PMCID: PMC9774102 DOI: 10.3390/ani12243523] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2022] [Revised: 12/04/2022] [Accepted: 12/07/2022] [Indexed: 12/15/2022] Open
Abstract
Duck plague (DP) is a highly contagious viral disease in ducks caused by the duck plague virus (DPV). The DPV, a member of Herpesviridae, poses a severe threat to the waterfowl farming industry worldwide. In this study, we reported a recent outbreak of DPV in domestic laying ducks at 310 days of age from southern China in December 2021. The gross lesion, histopathologic examination, molecular detection, and genetic characterization studies of DPV are described here. As a result, gross lesions such as an enlarged congestive spleen and liver were observed. Liver with vacuolar degeneration and small vacuoles and spleen with hemosiderosis were remarkable microscopic findings. Our results suggested that the liver had the highest viral load, followed by the trachea, pancreas, kidney, brain, spleen, and heart. In addition, DPV was successfully isolated in chicken embryo fibroblast cell culture and designated as DP-GD-305-21. The UL2, UL12, UL41, UL47, and LORF11 genes of DP-GD-305-21 shared a high nucleotide homology with the Chinese virulent (CHv) strain and the Chinese variant (CV) strain. In conclusion, this study reports the isolation and molecular characterization of DPV from a recent outbreak in southern China. Our results contributed to the understanding of the pathological and molecular characterization of currently circulating DPV in China.
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Affiliation(s)
- Zhipeng Liang
- College of Life Science and Engineering, Foshan University, Foshan 528231, China
| | - Jinyue Guo
- College of Life Science and Engineering, Foshan University, Foshan 528231, China
- Correspondence: (J.G.); (F.W.)
| | - Sheng Yuan
- College of Life Science and Engineering, Foshan University, Foshan 528231, China
| | - Qing Cheng
- College of Life Science and Engineering, Foshan University, Foshan 528231, China
| | - Xinyu Zhang
- College of Life Science and Engineering, Foshan University, Foshan 528231, China
| | - Zhun Liu
- College of Life Science and Engineering, Foshan University, Foshan 528231, China
| | - Congying Wang
- College of Life Science and Engineering, Foshan University, Foshan 528231, China
| | - Zhili Li
- College of Life Science and Engineering, Foshan University, Foshan 528231, China
| | - Bo Hou
- Institute of Animal Husbandry and Veterinary Medicine, Fujian Academy of Agricultural Sciences/Fujian Animal Disease Control Technology Development Center, Fuzhou 350013, China
| | - Shujian Huang
- College of Life Science and Engineering, Foshan University, Foshan 528231, China
| | - Feng Wen
- College of Life Science and Engineering, Foshan University, Foshan 528231, China
- Guangdong Provincial Key Laboratory of Animal Molecular Design and Precise Breeding, College of Life Science and Engineering, Foshan University, Foshan, 528231, China
- Correspondence: (J.G.); (F.W.)
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Chen H, Li M, Liu S, Kong J, Li D, Feng J, Xie Z. Whole-genome sequence and pathogenicity of a fowl adenovirus 5 isolated from ducks with egg drop syndrome in China. Front Vet Sci 2022; 9:961793. [PMID: 36032289 PMCID: PMC9412081 DOI: 10.3389/fvets.2022.961793] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2022] [Accepted: 07/26/2022] [Indexed: 11/18/2022] Open
Abstract
Recently, fowl adenovirus (FAdV) infection has become widespread in poultry in China and may be asymptomatic or associated with clinical and other pathological conditions. In 2017, a severe egg drop syndrome outbreak in breeder ducks (45 weeks old) occurred in eastern Shandong province in China. The egg production rate declined from 93 to 41%, finally increasing to ~80% (did not reach complete recovery). The presence of the virus was confirmed by FAdV-5 specific PCR assay, and it was designated strain WHRS. Furthermore, next-generation and Sanger sequencing of genomic fragments yielded a 45,734 bp genome. Phylogenetic analysis showed that the genomic sequence of the WHRS strain was most homologous-(99.95%) to that of the FAdV-5 17/25,702 and 14/24,408 strain, sharing 32.1~53.4% similarity with other FAdV strains in the genus Aviadenovirus. Infected duck embryos died within 3–5 dpi, but no deaths occurred in the infected ducks. Strain WHRS could cause egg drop syndrome in ducks, accompanied by clinical signs similar to those of natural infections. Overall, strain WHRS is lethal to duck embryos and causes egg drop syndrome in breeder ducks.
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Affiliation(s)
- Hao Chen
- College of Life Science and Technology, Guangxi University, Nanning, China
- Guangxi Key Laboratory of Veterinary Biotechnology, Guangxi Veterinary Research Institute, Nanning, China
- College of Life Science, Qufu Normal University, Qufu, China
- Hao Chen
| | - Meng Li
- Guangxi Key Laboratory of Veterinary Biotechnology, Guangxi Veterinary Research Institute, Nanning, China
| | - Siyu Liu
- College of Life Science, Qufu Normal University, Qufu, China
| | - Juan Kong
- College of Life Science, Qufu Normal University, Qufu, China
| | - Dan Li
- Guangxi Key Laboratory of Veterinary Biotechnology, Guangxi Veterinary Research Institute, Nanning, China
| | - Jiaxun Feng
- College of Life Science and Technology, Guangxi University, Nanning, China
| | - Zhixun Xie
- Guangxi Key Laboratory of Veterinary Biotechnology, Guangxi Veterinary Research Institute, Nanning, China
- *Correspondence: Zhixun Xie
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Niu Y, Su S, Chen X, Zhao L, Chen H. Biological characteristic and cytokines response of passages duck plague virus in ducks. Virus Res 2021; 295:198320. [PMID: 33549641 DOI: 10.1016/j.virusres.2021.198320] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2020] [Revised: 01/20/2021] [Accepted: 01/21/2021] [Indexed: 11/16/2022]
Abstract
To better understand the pathogenicity of duck plague virus (DPV). The DPV Chinese standard challenge strain (DPV CSC) was continuously passaged 20 times in duck embryo fibroblasts (DEFs). DPV F1 was lethal for 2-week-ducks, but DPV F10 and F20 were not lethal for 2-week ducks, the 528 bp in UL2 region of DPV F1-F20 was deleted, which suggested that the deletion in UL2 region was not related with the virulence of DPV. Compared with DPV F20 infected ducks, IL-8 in DPV F1 infected ducks was significantly upregulated, but IL-1, IL-2,IFNγ and MHC-II were significantly downregulated. ISKNV copies in DPV F10 and F20 infected ducks were lower than the DPV F1 infected ducks. These results showed that massive viruses replication, upregulation of IL-8 expresssion, repression of IL-1, IL-2, IFNγ and MHC-II expression resulted in serious lesions and high mortality. This study provided a in-depth understanding of the immune-related genes expression in the different virulence of DPV.
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Affiliation(s)
- Yinjie Niu
- State Key Laboratory of Veterinary Biotechnology, Heilongjiang Provincial Key Laboratory of Laboratory Animal and Comparative Medicine, Harbin Veterinary Research Institute, the Chinese Academy of Agriculture Sciences, 678 Haping Road, Harbin, 150069, China; Pearl River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Key Laboratory of Fishery Drug Development, Ministry of Agriculture and Rural Affairs, Key Laboratory of Aquatic Animal Immune Technology, Guangdong Provinces, Guangzhou, 510380, China
| | - Shibo Su
- State Key Laboratory of Veterinary Biotechnology, Heilongjiang Provincial Key Laboratory of Laboratory Animal and Comparative Medicine, Harbin Veterinary Research Institute, the Chinese Academy of Agriculture Sciences, 678 Haping Road, Harbin, 150069, China
| | - Xiaohan Chen
- State Key Laboratory of Veterinary Biotechnology, Heilongjiang Provincial Key Laboratory of Laboratory Animal and Comparative Medicine, Harbin Veterinary Research Institute, the Chinese Academy of Agriculture Sciences, 678 Haping Road, Harbin, 150069, China
| | - Lili Zhao
- State Key Laboratory of Veterinary Biotechnology, Heilongjiang Provincial Key Laboratory of Laboratory Animal and Comparative Medicine, Harbin Veterinary Research Institute, the Chinese Academy of Agriculture Sciences, 678 Haping Road, Harbin, 150069, China.
| | - Hongyan Chen
- State Key Laboratory of Veterinary Biotechnology, Heilongjiang Provincial Key Laboratory of Laboratory Animal and Comparative Medicine, Harbin Veterinary Research Institute, the Chinese Academy of Agriculture Sciences, 678 Haping Road, Harbin, 150069, China.
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Chen X, Hu B, Huang L, Cheng L, Liu H, Hu J, Hu S, Han C, He H, Kang B, Xu H, Zhang R, Wang J, Li L. The differences in intestinal growth and microorganisms between male and female ducks. Poult Sci 2021; 100:1167-1177. [PMID: 33518075 PMCID: PMC7858134 DOI: 10.1016/j.psj.2020.10.051] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2020] [Revised: 10/03/2020] [Accepted: 10/19/2020] [Indexed: 01/22/2023] Open
Abstract
There are great differences in physiological and biological functions between animals of different sexes. However, whether there is a consensus between sexes in duck intestinal development and microorganisms is still unknown. The current study used Nonghua ducks to estimate the effect of sex on the intestine by evaluating differences in intestinal growth indexes and microorganisms. The intestines of male and female ducks were sampled at 2, 5, and 10 wk from the duodenum, jejunum, ileum, and cecum. Then, the intestinal length and weight were measured, the morphology was observed with HE staining, and the intestinal content was analyzed by 16S rRNA sequencing. The results showed that male ducks have shorter intestinal lengths with higher relative weights/relative lengths. The values of jejunal villus height (VH)/crypt depth (CD) of female ducks were significantly higher at 2 wk, whereas the jejunal VH/CD was significantly lower at 10 wk. There was obvious separation of microorganisms in each intestinal segment of ducks of different sexes at the 3 time periods. The dominant phyla at different stages were Firmicutea, Proteobacteria, Bacteroidetes, and Actinobacteria. The duodenal Chao index at the genus level of male ducks was significantly higher at 10 wk than that of female ducks. Significantly different genera were found only in the jejunum, and the abundances of Escherichia_Shigella, Pseudomonas, Clostridium_sensu_stricto_1, Sphingomonas, and Desulfovibrio in male ducks were higher than those in female ducks, whereas the abundance of Rothia was lower, and the abundance of viral infectious diseases, lipid metabolism, metabolism of terpenoids and polyketides, parasitic infectious diseases, xenobiotic biodegradation and metabolism, cardiovascular disease, and metabolism of other amino acids in male ducks were higher than that in female ducks, whereas gene folding, sorting and degradation pathways, and nucleotide metabolism were lower. This study provides a basic reference for the intestinal development and microbial symbiosis of ducks of different sexes.
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Affiliation(s)
- Xuefei Chen
- Work for Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Institute of Animal Genetics and Breeding, Sichuan Agriculture University, Chengdu, China
| | - Bo Hu
- Work for Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Institute of Animal Genetics and Breeding, Sichuan Agriculture University, Chengdu, China
| | - Liansi Huang
- Work for Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Institute of Animal Genetics and Breeding, Sichuan Agriculture University, Chengdu, China
| | - Lumin Cheng
- Work for Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Institute of Animal Genetics and Breeding, Sichuan Agriculture University, Chengdu, China
| | - Hehe Liu
- Work for Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Institute of Animal Genetics and Breeding, Sichuan Agriculture University, Chengdu, China
| | - Jiwei Hu
- Work for Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Institute of Animal Genetics and Breeding, Sichuan Agriculture University, Chengdu, China
| | - Shenqiang Hu
- Work for Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Institute of Animal Genetics and Breeding, Sichuan Agriculture University, Chengdu, China
| | - Chunchun Han
- Work for Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Institute of Animal Genetics and Breeding, Sichuan Agriculture University, Chengdu, China
| | - Hua He
- Work for Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Institute of Animal Genetics and Breeding, Sichuan Agriculture University, Chengdu, China
| | - Bo Kang
- Work for Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Institute of Animal Genetics and Breeding, Sichuan Agriculture University, Chengdu, China
| | - Hengyong Xu
- Work for Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Institute of Animal Genetics and Breeding, Sichuan Agriculture University, Chengdu, China
| | - Rongping Zhang
- Work for Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Institute of Animal Genetics and Breeding, Sichuan Agriculture University, Chengdu, China
| | - Jiwen Wang
- Work for Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Institute of Animal Genetics and Breeding, Sichuan Agriculture University, Chengdu, China
| | - Liang Li
- Work for Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Institute of Animal Genetics and Breeding, Sichuan Agriculture University, Chengdu, China.
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Yao M, Zhang X, Gao Y, Song S, Xu D, Yan L. Development and application of multiplex PCR method for simultaneous detection of seven viruses in ducks. BMC Vet Res 2019; 15:103. [PMID: 30935399 PMCID: PMC6444421 DOI: 10.1186/s12917-019-1820-1] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2018] [Accepted: 02/25/2019] [Indexed: 01/22/2023] Open
Abstract
BACKGROUND Major viruses, including duck-origin avian influenza virus, duck-origin Newcastle disease virus, novel duck parvovirus, duck hepatitis A virus, duck Tembusu virus, fowl adenovirus, and duck enteritis virus, pose great harm to ducks and cause enormous economic losses to duck industry. This study aims to establish a multiplex polymerase chain reaction (m-PCR) method for simultaneous detection of these seven viruses. RESULTS Specific primers were designed and synthesized according to the conserved region of seven viral gene sequences. Then, seven recombinant plasmids, as the positive controls, were reconstructed in this study. Within the study, D-optimal design was adopted to optimize PCR parameters. The optimum parameters for m-PCR were annealing temperature at 57 °C, Mg2+ concentration at 4 mM, Taq DNA polymerase concentration at 0.05 U/μL, and dNTP concentration at 0.32 mM. With these optimal parameters, the m-PCR method produced neither cross-reactions among these seven viruses nor nonspecific reactions with other common waterfowl pathogens. The detection limit of m-PCR for each virus was 1 × 104 viral DNA copies/μL. In addition, the m-PCR method could detect a combination of several random viruses in co-infection analysis. Finally, the m-PCR method was successfully applied to clinical samples, and the detection results were consistent with uniplex PCR. CONCLUSION Given its rapidity, specificity, sensitivity, and convenience, the established m-PCR method is feasible for simultaneous detection of seven duck-infecting viruses and can be applied to clinical diagnosis of viral infection in ducks.
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Affiliation(s)
- Ming Yao
- MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, 210095, China
| | - Xiyu Zhang
- MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, 210095, China
| | - Yunfei Gao
- Nanjing Tianbang Bio-Industry co., LTD, Nanjing, 211102, China
| | - Suquan Song
- MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, 210095, China
| | - Danning Xu
- Guangdong Province Key Laboratory of Waterfowl Healthy Breeding, Zhongkai University of Agricultural and Engineering, Guangzhou, 510225, China.
| | - Liping Yan
- MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, 210095, China. .,Jiangsu Detection Center of Terrestrial Wildlife Disease, Nanjing Agricultural University, Nanjing, 210095, People's Republic of China.
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Wan C, Shi S, Chen C, Chen H, Cheng L, Fu Q, Fu G, Liu R, Huang Y. Development of a PCR assay for detection and differentiation of Muscovy duck and goose parvoviruses based on NS gene characterization. J Vet Med Sci 2018; 80:1861-1866. [PMID: 30298830 PMCID: PMC6305514 DOI: 10.1292/jvms.18-0256] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
Abstract
Muscovy duck parvovirus (MDPV) and goose parvovirus (GPV) have both been found to cause
high mortality and morbidity in Muscovy ducklings. Specific detection is often rife with
false positives due to high identity at the genomic nucleotide level and antigenic
similarity between MDPVs and GPVs. In this study, significantly variable regions were
found, via non-structural (NS) comparison, between MDPV and GPV NS genes; however, NS
genes were conserved within the MDPV and GPV groups. A polymerase chain reaction (PCR)
assay for detecting and differentiating MDPVs and GPVs was developed with more specificity
based on the NS gene characterization. The assay detected as low as 103 DNA
copies of both the MDPV and GPV strains, along with 549 separate base pairs (bp). No bands
of the same size from other duck pathogens, including duck circovirus, duck enteritis
virus, egg drop syndrome virus, duck-origin goose hemorrhagic polyomavirus,
Escherichia coli, Salmonella, Riemerella
anatipestifer and Pasteurella multocida were amplified. This
indicates that this method for performing PCR provides a useful and reliable alternative
tool for more precise differentiation of MDPV and GPV infection in clinical samples.
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Affiliation(s)
- Chunhe Wan
- Fujian Provincial Key Laboratory for Avian Diseases Control and Prevention/Fujian Animal Diseases Control Technology Development Center, Institute of Animal Husbandry and Veterinary Medicine of Fujian Academy of Agricultural Sciences, Fuzhou 350013, People's Republic of China
| | - Shaohua Shi
- Fujian Provincial Key Laboratory for Avian Diseases Control and Prevention/Fujian Animal Diseases Control Technology Development Center, Institute of Animal Husbandry and Veterinary Medicine of Fujian Academy of Agricultural Sciences, Fuzhou 350013, People's Republic of China
| | - Cuiteng Chen
- Fujian Provincial Key Laboratory for Avian Diseases Control and Prevention/Fujian Animal Diseases Control Technology Development Center, Institute of Animal Husbandry and Veterinary Medicine of Fujian Academy of Agricultural Sciences, Fuzhou 350013, People's Republic of China
| | - Hongmei Chen
- Fujian Provincial Key Laboratory for Avian Diseases Control and Prevention/Fujian Animal Diseases Control Technology Development Center, Institute of Animal Husbandry and Veterinary Medicine of Fujian Academy of Agricultural Sciences, Fuzhou 350013, People's Republic of China
| | - Longfei Cheng
- Fujian Provincial Key Laboratory for Avian Diseases Control and Prevention/Fujian Animal Diseases Control Technology Development Center, Institute of Animal Husbandry and Veterinary Medicine of Fujian Academy of Agricultural Sciences, Fuzhou 350013, People's Republic of China
| | - Qiuling Fu
- Fujian Provincial Key Laboratory for Avian Diseases Control and Prevention/Fujian Animal Diseases Control Technology Development Center, Institute of Animal Husbandry and Veterinary Medicine of Fujian Academy of Agricultural Sciences, Fuzhou 350013, People's Republic of China
| | - Guanghua Fu
- Fujian Provincial Key Laboratory for Avian Diseases Control and Prevention/Fujian Animal Diseases Control Technology Development Center, Institute of Animal Husbandry and Veterinary Medicine of Fujian Academy of Agricultural Sciences, Fuzhou 350013, People's Republic of China
| | - Rongchang Liu
- Fujian Provincial Key Laboratory for Avian Diseases Control and Prevention/Fujian Animal Diseases Control Technology Development Center, Institute of Animal Husbandry and Veterinary Medicine of Fujian Academy of Agricultural Sciences, Fuzhou 350013, People's Republic of China
| | - Yu Huang
- Fujian Provincial Key Laboratory for Avian Diseases Control and Prevention/Fujian Animal Diseases Control Technology Development Center, Institute of Animal Husbandry and Veterinary Medicine of Fujian Academy of Agricultural Sciences, Fuzhou 350013, People's Republic of China
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