Goose astrovirus (GAstV) poses a large threat to the goose industry in China, with two genotypes: goose astrovirus genotype 1 (GAstV-1) and GAstV-2. GAstV-2 causes gout in goslings; however, understanding of GAstV-1 is limited. In this study, the GAstV-1 strain JY202323, was isolated from dead goslings, and its complete genome sequence was obtained using next-generation sequencing. Its whole genome was 7,252 nucleotides in length, and its structure was similar to GAstV-1. Phylogenetic analysis revealed that GAstV-1 could be divided into two subgroups. Phylogenetic analysis of the complete genome and capsid protein sequences revealed that GAstV-1 could be divided into two subgroups. Infection of one-day-old goslings with JY202323 resulted in diarrhoea and weight loss with a mortality rate of approximately 13%; however, typical gout symptoms were not observed, and no obvious tissue lesions were found upon autopsy. Immunohistochemical results showed that the GAstV-1 JY202323 strain could infect most tissues except the brain. Viral loads were high in the small intestine, duodenum, bursa of Fabricius, and lungs. Pathological analysis revealed significant lesions in the small intestine, lungs, bursa of Fabricius, and spleen; no lesions were observed in other tissues. Blood biochemical indicators were normal compared with the control group. GAstV-1 JY202323 mainly causes tissue damage in the small intestine and lungs as well as inflammatory responses in lymphoid tissues, which differ from GAstV-2. These findings provide new insights into GAstV-1 genetic diversity and pathogenicity, aiding in its prevention and control.
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http://dx.doi.org/10.1016/j.micpath.2025.107324 | DOI Listing |
Microb Pathog
January 2025
Jiangsu Agri-Animal Husbandry Vocational College, Jiangsu Key Laboratory for High-Tech Research and Development of Veterinary Biopharmaceuticals, Taizhou 225300, PR China. Electronic address:
Goose astrovirus (GAstV) poses a large threat to the goose industry in China, with two genotypes: goose astrovirus genotype 1 (GAstV-1) and GAstV-2. GAstV-2 causes gout in goslings; however, understanding of GAstV-1 is limited. In this study, the GAstV-1 strain JY202323, was isolated from dead goslings, and its complete genome sequence was obtained using next-generation sequencing.
View Article and Find Full Text PDFViruses
January 2025
Center of Disease Immunity and Intervention, College of Medicine, Lishui University, Lishui 323000, China.
Gosling gout disease is an infectious disease caused by goose astrovirus (GAstV), which can result in urate deposition in the internal organs and joints of goslings. Since 2015, outbreaks of gosling gout disease have occurred in several goose-producing areas in China. Subsequently, the disease spread to the vast majority of eastern China, becoming a major threat to goose farms and causing huge economic losses to the goose industry.
View Article and Find Full Text PDFAvian Pathol
January 2025
College of Animal Science and Technology/Veterinary Medicine, Anhui Agricultural University, Hefei, PR China.
Goose astrovirus (GoAstV) has emerged as a significant pathogen affecting the goose industry in China, with GoAstV-2 becoming the dominant genotype since 2017. This study explores the genetic and structural factors underlying the prevalence of GoAstV-2, focusing on codon usage bias, spike protein variability, and structural stability. Phylogenetic and effective population size analyses revealed that GoAstV-2 experienced rapid expansion between 2017 and 2018, followed by population stabilization.
View Article and Find Full Text PDFMicroorganisms
November 2024
Guangxi Key Laboratory of Animal Breeding, Disease Control and Prevention, College of Animal Science and Technology, Guangxi Grass Station, Guangxi University, Nanning 530004, China.
Duck Tembusu virus (DTMUV), duck hepatitis virus (DHV), Muscovy duck reovirus (MDRV), and Muscovy duck parvovirus (MDPV) represent four emergent infectious diseases impacting waterfowl, which can be challenging to differentiate due to overlapping clinical signs. In response to this, we have developed a one-step multiplex real-time fluorescence quantitative reverse transcription PCR (qRT-PCR) assay, capable of simultaneously detecting DTMUV, DHV, MDRV, and MDPV. This method exhibits high specificity, avoiding cross-reactivity with other viruses such as Fowl adenoviruses (FADV), infectious bursal disease virus (IBDV), infectious bronchitis virus (IBV), infectious laryngotracheitis virus (ILTV), Haemophilus paragallinarum (Hpg), duck circovirus (DUCV), goose astrovirus (GoAstV), and mycoplasma gallisepticum (MG).
View Article and Find Full Text PDFPoult Sci
January 2025
Jiangxi Provincial Key Laboratory for Animal Health, College of Animal Science and Technology, Jiangxi Agricultural University, Nanchang, China. Electronic address:
The ongoing Goose astrovirus (GoAstV) epidemic, which primarily infects goslings causing severe liver damage, has inflicted considerable damage on the poultry industry. Endoplasmic reticulum stress (ERS) is a significant modulator of several viral infections, while severe ERS may result in apoptosis. This study examined the roles and possible mechanisms of ERS and apoptosis in GoAstV-induced liver injury in goslings.
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