Avian Pathology最新文献

Emerging enteric coronaviruses in captive-bred red-legged partridges (Alectoris rufa), France. 法国圈养红腿鹧鸪（Alectoris rufa）中新出现的肠道冠状病毒

IF 2.7 2区农林科学

Avian Pathology Pub Date : 2026-10-16 DOI: 10.1080/03079457.2026.2723911

Matthieu Pinson, Guillaume Croville, Manuela Crispo, Nicolas Gaide, Mathilda Walch, Nicolas Viloux, Corentin Bourgeois, Benoit Sraka, Catherine Belloc, Jean-Luc Guerin

引用次数: 0

Turkey haemorrhagic enteritis live vaccination controls disease and field virus circulation: molecular, clinical and pathological evidence in field longitudinal studies. 土耳其出血性肠炎活疫苗控制疾病和现场病毒循环：现场纵向研究中的分子、临床和病理证据。

IF 2.7 2区农林科学

Avian Pathology Pub Date : 2026-10-16 DOI: 10.1080/03079457.2026.2718853

Caterina Lupini, Giulia Quaglia, Valentina Benedetti, Chiara Giudice, Giulia Mescolini, Marco Tecilla, Laura Gallina, Giovanni Ortali, Francesco Prandini, Elena Catelli

引用次数: 0

Molecular epidemiology, genogroup classification, and diversity of infectious bursal disease virus. 传染性法氏囊病病毒的分子流行病学、基因群分类和多样性。

IF 2.7 2区农林科学

Avian Pathology Pub Date : 2026-10-16 DOI: 10.1080/03079457.2026.2733058

Hayatuddeen Bako Aliyu, Abdullahi Abdullahi Raji, Jalila Abu, Tasiu Mallam Hamisu, Mohd Hair Bejo, Aini Ideris, Abdul Rahman Omar

{"title":"Molecular epidemiology, genogroup classification, and diversity of infectious bursal disease virus.","authors":"Hayatuddeen Bako Aliyu, Abdullahi Abdullahi Raji, Jalila Abu, Tasiu Mallam Hamisu, Mohd Hair Bejo, Aini Ideris, Abdul Rahman Omar","doi":"10.1080/03079457.2026.2733058","DOIUrl":"10.1080/03079457.2026.2733058","url":null,"abstract":"Viral diseases are a major cause of economic losses in the poultry industry. Among these is infectious bursal disease (IBD), which poses a threat to global poultry production. The epidemiology of IBD is changing; while very virulent IBDV (vvIBDV) remains endemic and represents the dominant clinical threat in regions such as Africa and parts of South America, the regional transition towards novel variants (nVarIBDVs) and reassortants (A3B1) is particularly pronounced in Asian and European poultry production, respectively. This review synthesizes global IBD epidemiological data reported up to December 2025 and analyses the evolution of molecular genogrouping and fitness. Ongoing IBDV evolution is accelerating, with Asia becoming the epicentre of nVarIBDV (genogroup A2d), which circumvents maternally-derived antibodies (MDA) and classical vaccine protection. In Europe, the A3B1 reassortant has become the dominant field IBDV strain. The review highlights a nomenclature conflict regarding the A9 designation, which currently refers to both an attenuated strain and a pathogenic variant from Portugal. Considering the 9% divergence threshold, the attenuated IBDV strain should be returned to the A1 genogroup lineage \"b\" (A1b), while A9 denotes Portuguese variants. Furthermore, phylogenetic analysis reveals that the evolution of segment B (VP1) is independent of segment A (VP2), necessitating a bi-segmental approach. The rapid antigenic drift in VP2, combined with the crucial role of the conserved segment B and the RNA-dependent RNA polymerase (RdRp) in viral pathogenicity, necessitates a shift to a standardized dual-segment phylogenetic classification system (A#xB#y binomial nomenclature) for effective global surveillance.","PeriodicalId":8788,"journal":{"name":"Avian Pathology","volume":" ","pages":"1-18"},"PeriodicalIF":2.7,"publicationDate":"2026-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148963127","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Antimicrobial resistance and virulence profiles of Escherichia coli isolated from poultry omphalitis following changes in antibiotic prevention strategies in Quebec, Canada. 加拿大魁北克省家禽脐炎分离的大肠杆菌耐药性和毒力分析：抗生素预防策略的变化

IF 2.7 2区农林科学

Avian Pathology Pub Date : 2026-10-14 DOI: 10.1080/03079457.2026.2701307

Nicolas Deslauriers, Lila Maduro, Audrey Charlebois, Martine Boulianne

引用次数: 0

Emergence of the GI-23 lineage of infectious bronchitis virus in Brazilian backyard poultry. 巴西后院家禽传染性支气管炎病毒GI-23谱系的出现。

IF 2.7 2区农林科学

Avian Pathology Pub Date : 2026-10-14 DOI: 10.1080/03079457.2026.2718378

Andreina de Carvalho Araujo, Lilian de Moura Oliveira, Yongwoo Son, Ji-Yeong Kim, Raquel Rédua de Lima, Guilherme Pereira Scagion, Giovana Santos Caleiro, Jansen de Araújo, Rhubia Silveira Martins Rosa, Clarice Weis Arns, Izabelle Mariano Cordeiro, Paulo Roberto Blandino de Lima Dias, Fernando Rosado Spilki, Dong-Hun Lee, Helena Lage Ferreira

{"title":"Emergence of the GI-23 lineage of infectious bronchitis virus in Brazilian backyard poultry.","authors":"Andreina de Carvalho Araujo, Lilian de Moura Oliveira, Yongwoo Son, Ji-Yeong Kim, Raquel Rédua de Lima, Guilherme Pereira Scagion, Giovana Santos Caleiro, Jansen de Araújo, Rhubia Silveira Martins Rosa, Clarice Weis Arns, Izabelle Mariano Cordeiro, Paulo Roberto Blandino de Lima Dias, Fernando Rosado Spilki, Dong-Hun Lee, Helena Lage Ferreira","doi":"10.1080/03079457.2026.2718378","DOIUrl":"https://doi.org/10.1080/03079457.2026.2718378","url":null,"abstract":"Infectious bronchitis virus (IBV) remains a major threat to poultry production worldwide, with the GI-23 lineage emerging as one of the most epidemiologically relevant variants in recent years. Although GI-23 has been reported in Brazilian commercial poultry, its occurrence and genomic characteristics in backyard poultry remain poorly understood. This study investigated the molecular epidemiology and evolutionary features of IBV circulating in backyard poultry from São Paulo State, Brazil. Samples from 893 backyard birds were screened for IBV using RT-qPCR targeting the 5' untranslated region (5'UTR). Positive samples were further characterized by lineage-specific RT-PCR assays, S1 gene sequencing, virus isolation, and whole-genome sequencing, followed by phylogenetic, phylogenomic, and recombination analyses. IBV was detected exclusively in chickens, with an overall prevalence of 13.8% (42/304 swab pools; 95% CI: 10.1-18.2). Among RT-qPCR-positive samples, 23.9% were identified as belonging to the GI-23 lineage, while GI-1 and GI-11 lineages were not detected. Phylogenetic analysis of partial S1 gene sequences revealed multiple GI-23 sublineages circulating in Brazil, indicating different viral introductions. Whole-genome sequencing of a Brazilian GI-23 isolate showed high identity to a virus identified in Mexico and revealed recombination events involving European and Middle Eastern IBV lineages. These findings provide the molecular and genomic evidence of IBV GI-23 circulation in Brazilian backyard poultry and highlight the importance of monitoring viral evolution and supporting effective disease control strategies.","PeriodicalId":8788,"journal":{"name":"Avian Pathology","volume":" ","pages":"1-13"},"PeriodicalIF":2.7,"publicationDate":"2026-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149179349","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Newcastle disease virus: Insights into molecular epidemiology, dynamics of distribution and diagnostics. 新城疫病毒：分子流行病学的见解，分布和诊断的动态。

IF 2.7 2区农林科学

Avian Pathology Pub Date : 2026-10-12 DOI: 10.1080/03079457.2026.2746602

Anna D Solovieva, Olga A Kondakova, Dmitriy L Granovskiy, Ekaterina M Ryabchevskaya, Elizaveta P Umarova, Ekaterina A Evtushenko, Irina N Matveeva, Alexey A Agranovsky, Nikolai A Nikitin, Olga V Karpova

{"title":"Newcastle disease virus: Insights into molecular epidemiology, dynamics of distribution and diagnostics.","authors":"Anna D Solovieva, Olga A Kondakova, Dmitriy L Granovskiy, Ekaterina M Ryabchevskaya, Elizaveta P Umarova, Ekaterina A Evtushenko, Irina N Matveeva, Alexey A Agranovsky, Nikolai A Nikitin, Olga V Karpova","doi":"10.1080/03079457.2026.2746602","DOIUrl":"https://doi.org/10.1080/03079457.2026.2746602","url":null,"abstract":"AbstractThe Newcastle disease virus (NDV) is the etiological agent of a highly transmissible avian disease, first recognized in 1926. The virus continues to pose a substantial threat to both commercial and domestic poultry farming globally, causing major outbreaks with high mortality rates and resulting in considerable economic losses. Despite the widespread use of vaccines and other control measures outbreaks persist. This is linked to the NDV significant genetic variability, its capacity to evolve under selective pressure and its wide range of natural hosts, with diverse virus variants continuing to circulate globally in both domestic and wild birds. Wild synanthropic and migratory birds play an important role in maintaining the virus and transmitting it across regions and continents. Summarized monitoring data from different countries evidences global picture of up-to-date virus distribution and changes in the different virus variant composition from 2017-2026. Some commonly used tests may miss newly emerging variants, and diagnostic procedures thus have to be regularly modified.","PeriodicalId":8788,"journal":{"name":"Avian Pathology","volume":" ","pages":"1-111"},"PeriodicalIF":2.7,"publicationDate":"2026-10-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149163729","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Nutritional modulation of biochemical stress using Azolla pinnata in E. coli-challenged broiler chickens vaccinated with IBDV. 利用羽状萍对大肠杆菌攻毒肉鸡接种IBDV后生化应激的营养调节作用

IF 2.7 2区农林科学

Avian Pathology Pub Date : 2026-10-02 DOI: 10.1080/03079457.2026.2699975

Mahak Barak, Sushma Kajal, Deepika Lather, Surbhi Gupta, Vikas Nehra, Neeraj Sharma

{"title":"Nutritional modulation of biochemical stress using Azolla pinnata in E. coli-challenged broiler chickens vaccinated with IBDV.","authors":"Mahak Barak, Sushma Kajal, Deepika Lather, Surbhi Gupta, Vikas Nehra, Neeraj Sharma","doi":"10.1080/03079457.2026.2699975","DOIUrl":"10.1080/03079457.2026.2699975","url":null,"abstract":"Infectious bursal disease (IBD) is a highly contagious and immunosuppressive viral disease of poultry, causing severe economic losses worldwide. Although intermediate plus live strain vaccines are widely used for IBD control, these vaccines may induce immunosuppression and metabolic stress, predisposing birds to secondary bacterial infections such as avian pathogenic Escherichia coli. Azolla pinnata, a nutrient rich aquatic fern possessing antioxidant and hepatoprotective properties, has emerged as a promising feed supplement in poultry nutrition. The present study was designed to evaluate the ameliorative potential of Azolla pinnata in broiler chickens challenged with Escherichia coli (E. coli) and vaccinated with an infectious bursal disease virus live strain vaccine on biochemical, oxidative parameters and immunological response. Broiler chicks were vaccinated at 9 days of age and fed diets with or without Azolla pinnata supplementation at the rate of 5% in the feed in dried form, followed by experimental challenge with E. coli. Serum biochemical parameters, including total protein, albumin, globulin, liver enzyme activities, were assessed to evaluate hepatic status. Oxidative parameters like lipid peroxidation, glutathione peroxidase and humoral immune response were evaluated to assess the immune status of birds. Dietary supplementation of Azolla pinnata resulted in improved biochemical, oxidative profiles and humoral immune response in vaccinated and E. coli-challenged birds, achieved mainly through its rich phytochemical constituents and antioxidant properties, which indicated reduced hepatic stress. The findings suggested that Azolla pinnata supplementation may help to maintain homeostasis with live IBD vaccination and E. coli-challenged broiler chickens.","PeriodicalId":8788,"journal":{"name":"Avian Pathology","volume":" ","pages":"1-14"},"PeriodicalIF":2.7,"publicationDate":"2026-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148403294","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Protective efficacy of bacterial sialidase-based intranasal inactivated avian influenza vaccine against H5N1 infection in poultry. 基于细菌唾液酸酶的鼻内灭活禽流感疫苗对家禽H5N1感染的保护作用。

IF 2.7 2区农林科学

Avian Pathology Pub Date : 2026-10-02 DOI: 10.1080/03079457.2026.2679211

Ryan Septa Kurnia, Christian Marco Hadi Nugroho, Otto Sahat Martua Silaen, Desak Gede Budi Krisnamurti, Amin Soebandrio, Muhammad Ade Putra, Agustin Indrawati

{"title":"Protective efficacy of bacterial sialidase-based intranasal inactivated avian influenza vaccine against H5N1 infection in poultry.","authors":"Ryan Septa Kurnia, Christian Marco Hadi Nugroho, Otto Sahat Martua Silaen, Desak Gede Budi Krisnamurti, Amin Soebandrio, Muhammad Ade Putra, Agustin Indrawati","doi":"10.1080/03079457.2026.2679211","DOIUrl":"https://doi.org/10.1080/03079457.2026.2679211","url":null,"abstract":"The avian influenza virus (AIV) poses a serious threat to the poultry industry, leading to substantial economic losses and having the potential to cause severe zoonotic diseases worldwide. The development of mucosal vaccines has prompted greater attention due to their ability to mimic the natural infection process and streamline the delivery method. In this study, we evaluated the efficacy and immunomodulatory responses of an intranasal vaccine containing inactive H5N1 virus and bacterial sialidase with mucoadhesive chitosan adjuvant. The results demonstrated that the challenged intranasally vaccinated group exhibited a significantly suppressed mortality rate and viral shedding compared to the group infected with H5N1 AIV. Additionally, elevated mucosal IgA at several days post intranasal vaccination indicated activation of the nasal-associated lymphoid tissue (NALT) and improvement of cell-mediated immune responses. Gene expression analysis of the innate immune system revealed significant downregulation of TLR7 and diminished interferon responses in brain and lung tissues, suggesting restricted viral recognition and replication. In the trachea, challenged birds exhibited selective upregulation of IFN-γ, while the vaccinated group had no substantial activation, indicating that intranasal vaccination modulated local immune responses at the viral entry site. In conclusion, intranasal vaccination reduced tissue damage, suppressed viral shedding, and improved mucosal protection, demonstrating its potential as a candidate strategy to manage H5N1 AIV outbreaks.","PeriodicalId":8788,"journal":{"name":"Avian Pathology","volume":" ","pages":"1-13"},"PeriodicalIF":2.7,"publicationDate":"2026-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149103453","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Fowl adenovirus serotype 1 (FAdV-1) as a putative trigger of clostridial ventriculitis in laying hens. 禽腺病毒血清型1 （FAdV-1）可能引发蛋鸡梭状芽胞杆菌脑室炎。

IF 2.7 2区农林科学

Avian Pathology Pub Date : 2026-10-01 Epub Date: 2026-06-22 DOI: 10.1080/03079457.2026.2671743

Àlex Cobos, Marina Cid-Cañete, Mariona Leiva-Forns, Roser Dolz, Enric Villalbí, Rubén Roca, Mar Biarnés, Natàlia Majó

{"title":"Fowl adenovirus serotype 1 (FAdV-1) as a putative trigger of clostridial ventriculitis in laying hens.","authors":"Àlex Cobos, Marina Cid-Cañete, Mariona Leiva-Forns, Roser Dolz, Enric Villalbí, Rubén Roca, Mar Biarnés, Natàlia Majó","doi":"10.1080/03079457.2026.2671743","DOIUrl":"10.1080/03079457.2026.2671743","url":null,"abstract":"Although often overlooked, the gizzard can be a major target for avian disease, producing a negative impact on poultry production. Most commonly referred to as gizzard erosion-ulceration syndrome (GEU), erosions and ulcers in the gizzard can be caused by multiple environmental conditions, dietary factors, toxins, or infectious agents. Fowl adenovirus serotype-1 (FAdV-1) is a common pathogen of the chicken gizzard, causing adenoviral gizzard erosion (AGE), which is largely subclinical but has a negative impact on poultry production. On the other hand, C. perfringens rarely causes disease in the gizzard without predisposing factors, but may have much more severe consequences, as it causes much higher mortality rates. In this study, we report the first detection of coinfection of FAdV-1 and C. perfringens, causing high mortality rates in hens older than previously reported. Affected hens displayed severe ulcerative ventriculitis, which featured characteristic histologic features for both agents, such as intranuclear inclusion bodies (for FAdV-1) and necrotic and vascular lesions with intralesional Gram-positive bacilli (for C. perfringens). This case further evidences the potential impact of FAdV-1 on poultry production, not only by its direct effect but also because it might trigger the appearance of clostridial ventriculitis.","PeriodicalId":8788,"journal":{"name":"Avian Pathology","volume":" ","pages":"597-604"},"PeriodicalIF":2.7,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147873316","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Dr Laurence Noel (Jim) Payne, OBE. Laurence Noel (Jim) Payne博士，OBE。

IF 2.7 2区农林科学

Avian Pathology Pub Date : 2026-10-01 Epub Date: 2026-06-24 DOI: 10.1080/03079457.2026.2679338

Venugopal Nair, Martin W Shirley

引用次数: 0