3,039 results match your criteria Avian Pathology[Journal]


Survey on the prevalence of Dermanyssus gallinae in commercial laying farms in Portugal.

Avian Pathol 2019 Apr 15:1-26. Epub 2019 Apr 15.

d Moredun Research Institute , Pentlands Science Park, Bush Loan, Edinburgh , Midlothian EH26 0PZ , United Kingdom.

Dermanyssus gallinae, also known as the poultry red mite (PRM), is a blood-feeding ectoparasite of poultry and sylvatic birds. This mite is endemic in many parts of the globe and poses a threat to the egg industry, while compromising the health and welfare of hens, both directly and as a vector of diseases. In addition, people attacked by D. Read More

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https://www.tandfonline.com/doi/full/10.1080/03079457.2019.1
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http://dx.doi.org/10.1080/03079457.2019.1606415DOI Listing
April 2019
1 Read

Comparative pathogenicity of two subtypes (hepatitis-type and pancreatitis-type) of duck hepatitis A virus type 1 in experimentally-infected Muscovy ducklings.

Avian Pathol 2019 Apr 15:1-27. Epub 2019 Apr 15.

b Institute of Animal Husbandry and Veterinary medicine, Fujian Academy of Agricultural Science . Fuzhou , China .

Duck hepatitis A virus type 1 (DHAV-1) causes acute hepatitis with high morbidity and mortality in ducklings of the genera Cairina and Anas and is characterized by ecchymotic haemorrhage and necrosis of the liver surface. Since September 2011, a new subtype of DHAV-1 (named pancreatitis-type DHAV-1) has been isolated. This new subtype is characterized by yellowish or haemorrhagic pancreatitis, but with no significant pathological changes in the liver. Read More

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http://dx.doi.org/10.1080/03079457.2019.1605146DOI Listing

Anatomopathological changes, quantification and distribution of Libyostrongylus spp. in regions of the proventriculus and ventriculus of naturally and experimentally infected ostriches.

Avian Pathol 2019 Apr 12:1-25. Epub 2019 Apr 12.

a Laboratório de Biologia Celular e Tecidual, Centro de Biociências e Biotecnologia , Universidade Estadual do Norte Fluminense , Av. Alberto Lamego, 2000, Parque Califórnia, Campos dos Goytacazes , RJ , 28013-602 , Brazil .

Nematodes of the genus Libyostrongylus parasitize ostriches, causing high mortality rates. These nematodes are found in the proventriculus and ventriculus of ostriches, but little is known about their distribution and the possible anatomopathological changes they cause in the various regions of these organs. This paper describes the distribution and quantification of Libyostrongylus and pathological changes found in regions of the proventriculus and ventriculus of ostriches with high and low levels of both natural and experimental infection. Read More

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https://www.tandfonline.com/doi/full/10.1080/03079457.2019.1
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http://dx.doi.org/10.1080/03079457.2019.1607254DOI Listing
April 2019
2 Reads

Protection Afforded By Avian Influenza Vaccination Programs Consisting Of A Novel RNA Particle And An Inactivated Avian Influenza Vaccine Against A Highly Pathogenic Avian Influenza Virus Challenge In Layer Chickens Up To 18 Weeks Post Vaccination.

Avian Pathol 2019 Apr 9:1-34. Epub 2019 Apr 9.

b Southeast Poultry Research Laboratory, US National Poultry Research Center, U.S. Department of Agriculture , Agricultural Research Service (ARS) , 934 College Station Rd., Athens , GA 30605.

The efficacies of an oil adjuvanted-inactivated reverse genetics derived H5 avian influenza virus (AIV) vaccine and an alphavirus replicon RNA particle (RP) AIV vaccine were evaluated in commercial leghorn chickens. Challenge utilized A/Turkey/MN/12582/2015, an isolate representing the U.S. Read More

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http://dx.doi.org/10.1080/03079457.2019.1605148DOI Listing
April 2019
1 Read

Retrospective investigation and molecular characteristics of the recombinant Muscovy duck parvovirus circulating in Muscovy duck flocks in China.

Avian Pathol 2019 Apr 8:1-25. Epub 2019 Apr 8.

a College of Veterinary Medicine , Yangzhou University , Yangzhou , Jiangsu , China.

The recombinant Muscovy duck parvovirus (rMDPV) has been recently characterized and identified in China. However, whether more other rMDPV field isolates exist, and these strains possess common molecular characteristics remain to be explored. In this retrospective study, two new rMDPV isolates, namely, JH06 and JH10, were identified through genome sequencing and recombination analysis. Read More

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http://dx.doi.org/10.1080/03079457.2019.1605145DOI Listing

The Role of the phoP Transcriptional Regulator on Biofilm Formation of Avian Pathogenic Escherichia Coli.

Avian Pathol 2019 Apr 8:1-23. Epub 2019 Apr 8.

a Anhui Province Key Laboratory of Veterinary Pathobiology and Disease Control, College of Animal Science and Technology , Anhui Agricultu University , Hefei 230036 , PR China.

PhoP plays an important role as a transcriptional regulator in the two-component phoP/phoQ regulatory system, which is widely present in Gram-negative bacteria. In this study, we used DNA microarray-based technology to evaluate the role of phoP in biofilm formation in Avian Pathogenic Escherichia coli (APEC). Differences in gene transcription between APEC wild-type and phoP mutant strains were determined. Read More

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http://dx.doi.org/10.1080/03079457.2019.1605147DOI Listing
April 2019
2 Reads

Spotlight on avian pathology: Campylobacter hepaticus, the cause of Spotty Liver Disease in layers.

Avian Pathol 2019 Apr 3:1-3. Epub 2019 Apr 3.

a School of Science, RMIT University , Bundoora , Australia.

Campylobacter hepaticus was recently identified as the aetiological agent of Spotty Liver Disease (SLD). SLD causes significant health and productivity losses in the Australian egg industry and the disease is present in other countries. Following the isolation and characterization of C. Read More

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http://dx.doi.org/10.1080/03079457.2019.1602247DOI Listing
April 2019
2 Reads

Pathogenicity and genomic characterization of a novel avian orthoreovius variant isolated from vaccinated broiler flock in China.

Avian Pathol 2019 Mar 27:1-17. Epub 2019 Mar 27.

b College of Animal Science and Veterinary Medicine , Shandong Agricultural University , Tai'an , People's Republic of China .

Avian orthoreovirus (ARV) infections of broiler flocks cause arthritis/tenosynovitis syndrome and significant economic losses. ARV variants were detected in the USA and Canada. Viral arthritis/tenosynovitis syndrome has occurred frequently in China in recent years. Read More

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http://dx.doi.org/10.1080/03079457.2019.1600656DOI Listing
March 2019
1 Read

Detection of Histomonas meleagridis DNA in dust samples obtained from apparent healthy meat turkey flocks without effect on performance.

Avian Pathol 2019 Mar 27:1-18. Epub 2019 Mar 27.

a Clinic for Poultry and Fish Medicine, Department for Farm Animals and Veterinary Public Health , University of Veterinary Medicine , 1210 Vienna , Austria.

Environmental dust samples obtained from 65 turkey flocks in France, of which 6 suffered from histomonosis whereas the rest remained apparent healthy until the end of production, were tested for the presence of Histomonas meleagridis DNA by recently developed real-time PCR based on the 18S rRNA locus. In order to determine the genotype of detected histomonads, positive samples were further subjected to conventional 18S PCR and sequencing. Additionally, production data of all tested flocks such as average daily gain (ADG), feed conversion ratio (FCR) and production index (PI) were statistically evaluated and compared to see the effect of positive dust samples in apparent healthy flocks. Read More

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http://dx.doi.org/10.1080/03079457.2019.1599819DOI Listing

Temporal Characterization of Wooden Breast Myopathy ("Woody Breast") Severity and Correlation with Growth Rate and Lymphocytic Phlebitis in Three Commercial Broiler Strains and a Random-Bred Broiler Strain.

Avian Pathol 2019 Mar 27:1-21. Epub 2019 Mar 27.

a Department of Population Health and Pathobiology , College of Veterinary Medicine, North Carolina State University , 1060 William Moore Drive, Raleigh , NC 27607.

Wooden breast myopathy (WBM), or "woody" or "wooden" breast affects modern, rapidly growing, high breast-yield broiler chickens. Decreased meat quality due to undesirable organoleptic properties and condemnation of affected breast meat cause economic losses. The pathogenesis of WBM remains unknown. Read More

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http://dx.doi.org/10.1080/03079457.2019.1598541DOI Listing

Host specificity of avian metapneumoviruses.

Avian Pathol 2019 Feb 19:1-8. Epub 2019 Feb 19.

a VIPAC Unit (French Agency for Food, Environmental and Occupational Health Safety), Ploufragan-Plouzané-Niort Laboratory , Ploufragan, France.

To date, four subgroups of avian metapneumoviruses have been defined (AMPV-A, B, C and D) based on genetic and antigenic differences. The extent of infection in the three principal species (turkeys, chickens and ducks) by these subgroups is, however, not well defined. Here, a series of controlled and ethically approved experimental infections were performed in specific pathogen-free turkeys, chickens and ducks with each of the four AMPV subgroups. Read More

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http://dx.doi.org/10.1080/03079457.2019.1584390DOI Listing
February 2019
2 Reads

Comparison of the short-term and long-term efficacies of the Mycoplasma gallisepticum vaccines ts-11 and 6/85.

Avian Pathol 2019 Jun 18;48(3):238-244. Epub 2019 Feb 18.

a School of Veterinary and Agricultural Sciences , Werribee , Australia.

In order to compare the short-term efficacies of the live attenuated Mycoplasma gallisepticum (MG) vaccine strains ts-11 and 6/85, four groups of SPF chickens were vaccinated with each of the vaccines using eye drop and aerosol inoculations, and were subsequently challenged with a wild-type MG strain. When administered by the recommended routes (eye drop for ts-11 and fine aerosol for 6/85), both vaccines induced substantial and comparable levels of protection against airsacculitis and tracheitis caused by wild-type MG. The long-term efficacies of the two vaccines administered by the recommended route were also assessed. Read More

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http://dx.doi.org/10.1080/03079457.2019.1572103DOI Listing
June 2019
1 Read

Genetic and antigenic heterogeneity of infectious bronchitis virus in South America: implications for control programmes.

Avian Pathol 2019 Jun 15;48(3):270-277. Epub 2019 Mar 15.

a Sección Genética Evolutiva , Instituto de Biología, Facultad de Ciencias, Universidad de la República Montevideo , Uruguay.

Infectious bronchitis virus (IBV) is a persistent sanitary problem for the South American poultry industry despite extensive vaccination. The IBV single-stranded RNA genome has high rates of mutation and recombination that generate a notorious virus variability. Since most IBV vaccines are type-specific, there is a need for constant surveillance of the circulating lineages and knowledge about their genetic and antigenic properties. Read More

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https://www.tandfonline.com/doi/full/10.1080/03079457.2019.1
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http://dx.doi.org/10.1080/03079457.2019.1583315DOI Listing
June 2019
6 Reads

MinION sequencing to genotype US strains of infectious laryngotracheitis virus.

Avian Pathol 2019 Jun 11;48(3):255-269. Epub 2019 Mar 11.

a United States Department of Agriculture , Agricultural Research Service, US National Poultry Research Center , USDA ARS USNPRC, Athens , GA , USA.

Over the last decade the US broiler industry has fought long-lasting outbreaks of infectious laryngotracheitis (ILTV). Previously, nine genotypes (I-IX) of ILTVs have been recognized using the polymerase chain reaction-restriction fragment length polymorphisms (PCR-RFLP) method with three viral alleles (gB, gM and UL47/gG). In this study, the genotyping system was simplified to six genotypes by amplicon sequencing and examining discriminating single nucleotide polymorphisms (SNPs) within these open reading frames. Read More

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http://dx.doi.org/10.1080/03079457.2019.1579298DOI Listing

Fatal necrotic tracheitis by Aviadenovirus in captive Alagoas curassows (Pauxi mitu) extinct from the wild.

Avian Pathol 2019 Jun 12;48(3):278-283. Epub 2019 Mar 12.

a Avian Diseases, Department of Preventive Veterinary Medicine, Veterinary College , Universidade Federal de Minas Gerais (UFMG) , Belo Horizonte , MG , Brazil.

Extinct from nature, captive young Alagoas curassows (Pauxi mitu) were found agonizing or dead with respiratory disease. Intranuclear inclusion bodies were found in the epithelia of the trachea, associated with marked necrotic tracheitis. An Aviadenovirus was isolated in chicken eggs and characterized genetically with 99% identity to the fowl Aviadenovirus A, as based on the hexon protein gene. Read More

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http://dx.doi.org/10.1080/03079457.2019.1571559DOI Listing
June 2019
1 Read
1.639 Impact Factor

Antigenicity, pathogenicity and immunosuppressive effect caused by a South American isolate of infectious bursal disease virus belonging to the "distinct" genetic lineage.

Avian Pathol 2019 Jun 12;48(3):245-254. Epub 2019 Feb 12.

b Avian and Rabbit Virology Immunology and Parasitology Unit (VIPAC) , French Agency for Food, Environmental and Occupational Health Safety (ANSES) Ploufragan , France.

Infectious bursal disease virus (IBDV) is the causative agent of a highly contagious immunosuppressive disease affecting young chickens. The recently described "distinct IBDV" (dIBDV) genetic lineage encompasses a group of worldwide distributed strains that share conserved genetic characteristics in both genome segments making them unique within IBDV strains. Phenotypic characterization of these strains is scarce and limited to Asiatic and European strains collected more than 15 years ago. Read More

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http://dx.doi.org/10.1080/03079457.2019.1572867DOI Listing
June 2019
1 Read

Dietary selenium supplementation alleviates immune toxicity in the hearts of chickens with lead-added drinking water.

Avian Pathol 2019 Jun 18;48(3):230-237. Epub 2019 Feb 18.

a Department of Animal Science, College of Animal Science and Technology , Northeast Agricultural University , Harbin , People's Republic of China.

Lead (Pb) is an environmental pollutant and can damage organisms. Selenium (Se) can alleviate Pb poisoning. The present study aimed to investigate the alleviative effect of Se on Pb-induced immune toxicity in chicken hearts. Read More

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http://dx.doi.org/10.1080/03079457.2019.1572102DOI Listing
June 2019
13 Reads

Long-term protection against a virulent field isolate of infectious laryngotracheitis virus induced by inactivated, recombinant, and modified live virus vaccines in commercial layers.

Avian Pathol 2019 Jun 30;48(3):209-220. Epub 2019 Jan 30.

b Avian Health International, LLC , Flowery Branch , GA , USA.

Infectious laryngotracheitis (ILT) is an acute respiratory disease of chickens controlled through vaccination with live-modified attenuated vaccines, the chicken embryo origin (CEO) vaccines and the tissue-culture origin (TCO) vaccines. Recently, novel recombinant vaccines have been developed using herpesvirus of turkey (HVT) and fowl pox virus (FPV) as vectors to express ILTV immunogens for protection against ILT. The objective of this study was to assess the protection efficacy against ILT induced by recombinants, live-modified attenuated, and inactivated virus vaccines when administered alone or in combination. Read More

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https://www.tandfonline.com/doi/full/10.1080/03079457.2019.1
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http://dx.doi.org/10.1080/03079457.2019.1568389DOI Listing
June 2019
11 Reads

Deletion of the Riemerella anatipestifer type IX secretion system gene sprA results in differential expression of outer membrane proteins and virulence.

Avian Pathol 2019 Jun 12;48(3):191-203. Epub 2019 Feb 12.

a State Key Laboratory of Agricultural Microbiology, College of Veterinary Medicine , Huazhong Agricultural University , Wuhan , People's Republic of China.

Riemerella anatipestifer (RA), the causative agent of infectious serositis that targets ducklings and other poultry, secretes protein via the type IX secretion system (T9SS). The proteins transported by T9SS are located on the bacterial cell surface or secreted into the extracellular milieu. In this study, a sprA deletion mutant was constructed encoding a core protein of T9SS to investigate its influence on outer membrane protein expression and its role in virulence. Read More

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http://dx.doi.org/10.1080/03079457.2019.1566594DOI Listing
June 2019
3 Reads

Protection of chickens against fowl cholera by supernatant proteins of Pasteurella multocida cultured in an iron-restricted medium.

Avian Pathol 2019 Jun 27;48(3):221-229. Epub 2019 Mar 27.

a State Key Laboratory of Agricultural Microbiology , Huazhong Agricultural University , Wuhan , People's Republic of China.

Pasteurella multocida (P. multocida), a causative agent of fowl cholera, is an important pathogen in the poultry industry. In the present study, we found that the inactivated vaccine of P. Read More

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https://www.tandfonline.com/doi/full/10.1080/03079457.2019.1
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http://dx.doi.org/10.1080/03079457.2019.1568390DOI Listing
June 2019
9 Reads

A novel monoclonal antibodies-based sandwich ELISA for detection of serotype 4 fowl adenovirus.

Avian Pathol 2019 Jun 4;48(3):204-208. Epub 2019 Feb 4.

a Key Laboratory of Jiangsu Preventive Veterinary Medicine, Key Laboratory for Avian Preventive Medicine, Ministry of Education , College of Veterinary Medicine, Yangzhou University , Yangzhou , People's Republic of China.

As a major causative agent for hepatitis-hydropericardium syndrome (HPS) in chickens, serotype 4 fowl adenovirus (FAdV-4) has caused huge economic losses in the poultry industry globally. However, there is no commercial diagnostic test for FAdV-4 antigens. To generate a rapid approach for specific detection of FAdV-4, a monoclonal antibodies (mAbs)-based sandwich ELISA was developed. Read More

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http://dx.doi.org/10.1080/03079457.2019.1566595DOI Listing
June 2019
8 Reads

Early migration pattern of Avibacterium paragallinarum in the nasal passage of experimentally infected chicken and Japanese quail by immunohistochemistry.

Avian Pathol 2019 Apr 30;48(2):168-177. Epub 2019 Jan 30.

b Department of Veterinary Physiology and Biochemistry , Guru Angad Dev Veterinary and Animal Science University , Ludhiana , Punjab , India.

Infectious coryza (IC) is often a curse for poultry farmers when it occurs concurrently with several pathogens causing swollen head syndrome. The disease is caused by Avibacterium paragallinarum, which inflicts initial damage to the nasal and respiratory epithelium. This facilitates the progression of disease pathology across the nasal cavity, thereby providing a platform for multiplication of opportunistic microbes. Read More

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http://dx.doi.org/10.1080/03079457.2018.1562153DOI Listing
April 2019
3 Reads

Dose-dependent differential resistance of inbred chicken lines to avian pathogenic Escherichia coli challenge.

Avian Pathol 2019 Apr 14;48(2):157-167. Epub 2019 Jan 14.

a Division of Infection and Immunity, The Roslin Institute and Royal (Dick) School of Veterinary Studies , University of Edinburgh , Edinburgh, United Kingdom.

Avian pathogenic E. coli (APEC) cause severe respiratory and systemic disease. To address the genetic and immunological basis of resistance, inbred chicken lines were used to establish a model of differential resistance to APEC, using strain O1 of serotype O1:K1:H7. Read More

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http://dx.doi.org/10.1080/03079457.2018.1562154DOI Listing
April 2019
1 Read

CT venography and pathological characterization of crus haemorrhage in Pekin ducks.

Avian Pathol 2019 Apr 4;48(2):148-156. Epub 2019 Jan 4.

a College of Veterinary Medicine , China Agricultural University , Beijing , People's Republic of China.

The crus haemorrhage is one of the main causes of carcass defects in Pekin duck processing houses. However, its pathologic features are currently unclear. In order to examine the injury to the hind limb veins and illustrate the pathologic characteristics of crus haemorrhage in Pekin ducks, a total of 68 Pekin ducks with crus haemorrhage (test group) and 10 unaffected ducks (control group) were collected in this study. Read More

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http://dx.doi.org/10.1080/03079457.2018.1559922DOI Listing

Chicken endothelial cells are highly responsive to viral innate immune stimuli and are susceptible to infections with various avian pathogens.

Avian Pathol 2019 Apr 10;48(2):121-134. Epub 2019 Jan 10.

a INRA, Université François Rabelais, UMR1282 Infectiologie et Santé Publique , Nouzilly , France.

It is well established that the endothelium plays a prominent role in the pathogenesis of various infectious diseases in mammals. However, little is known about the role of endothelial cells (EC) as targets for avian pathogens and their contribution to the pathogenesis of infectious diseases in galliform birds. First, we explored the innate immune response of primary chicken aortic endothelial cells (pchAEC), obtained from 18-day-old embryos, to stimulation with pathogen-associated molecular patterns or recombinant chicken interferons (type I, II and III IFNs). Read More

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https://www.tandfonline.com/doi/full/10.1080/03079457.2018.1
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http://dx.doi.org/10.1080/03079457.2018.1556386DOI Listing
April 2019
1 Read
1.639 Impact Factor

Induction of IBV strain-specific neutralizing antibodies and broad spectrum protection in layer pullets primed with IBV Massachusetts (Mass) and 793B vaccines prior to injection of inactivated vaccine containing Mass antigen.

Avian Pathol 2019 Apr 4;48(2):135-147. Epub 2019 Jan 4.

c 138 Hartford Road, Huntingdon, Cambridgeshire PE29 1XQ , UK.

In an initial study in specified pathogen free (SPF) chickens, a heterologous virus neutralizing (VN) antibody response to IBV variants Q1, Variant 2 (Var 2), D388/QX (D388), D274 and Arkansas (DPI) was observed using a vaccination programme incorporating two different live-attenuated IBV vaccines, followed by boosting with an inactivated vaccine containing IBV Massachusetts (Mass) antigen. Therefore, a more detailed study was undertaken in SPF layer-type chickens primed with IBV Mass and 793B vaccines. The efficacy of single or repeated vaccination with a multivalent inactivated vaccine containing IBV antigen was determined against challenge with five virulent IBVs: Mass (M41), 793B (4/91), D388, Q1 and Var 2. Read More

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http://dx.doi.org/10.1080/03079457.2018.1556778DOI Listing
April 2019
2 Reads

Suspension culture of Marek's disease virus and evaluation of its immunological effects.

Avian Pathol 2019 Jun 3;48(3):183-190. Epub 2019 Apr 3.

a College of Veterinary Medicine , South China Agricultural University , Guangzhou , People's Republic of China.

Marek's disease virus (MDV) is a cell-associated α-herpesvirus of chickens. It is difficult to grow MDV in suspension culture. Therefore, MDV vaccines are currently produced using adherent primary chicken embryo fibroblasts, and on a large scale this is labour-intensive and costly. Read More

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http://dx.doi.org/10.1080/03079457.2018.1556385DOI Listing
June 2019
10 Reads

Spotlight on avian pathology: fowlpox virus.

Avian Pathol 2019 Apr 18;48(2):87-90. Epub 2018 Dec 18.

a Section of Virology, Faculty of Medicine , Imperial College London , London , UK.

Fowlpox virus is the type species of an extensive and poorly-defined group of viruses isolated from more than 200 species of birds, together comprising the avipoxvirus genus of the poxvirus family. Long known as a significant poultry pathogen, vaccines developed in the early and middle years of the twentieth century led to its effective eradication as a problem to commercial production in temperate climes in developed western countries (such that vaccination there is now far less common). Transmitted mechanically by biting insects, it remains problematic, causing significant losses to all forms of production (from backyard, through extensive to intensive commercial flocks), in tropical climes where control of biting insects is difficult. Read More

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https://www.tandfonline.com/doi/full/10.1080/03079457.2018.1
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http://dx.doi.org/10.1080/03079457.2018.1554893DOI Listing
April 2019
19 Reads
1.639 Impact Factor

Changes in gut bacterial communities in canaries infected by Macrorhabdus ornithogaster.

Avian Pathol 2019 Apr 20;48(2):111-120. Epub 2018 Dec 20.

a Department of Veterinary Sciences , University of Torino , Grugliasco , Italy.

Macrorhabdus ornithogaster is an opportunistic yeast that colonizes the gastric mucosa of many avian species. Until now, no studies have focused on the influence of a gastric infection on the balance of the intestinal microbiota of birds. In this study, 44 faecal samples from individual canaries, with and without M. Read More

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http://dx.doi.org/10.1080/03079457.2018.1553294DOI Listing
April 2019
18 Reads

An avian influenza virus H6N1 outbreak in commercial layers: case report and reproduction of the disease.

Avian Pathol 2019 Apr 20;48(2):98-110. Epub 2018 Dec 20.

a GD - Animal Health , Deventer , Netherlands.

An outbreak of low pathogenic avian influenza (LPAI) subtype H6N1 (intravenous pathogenicity index = 0.11) infection occurred in four productive brown layer flocks on three farms in the Netherlands within a period of two months. The farms were located at a maximum distance of 4. Read More

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http://dx.doi.org/10.1080/03079457.2018.1551612DOI Listing
April 2019
9 Reads

Recombinant Newcastle disease virus (NDV) La Sota expressing the haemagglutinin-neuraminidase protein of genotype VII NDV shows improved protection efficacy against NDV challenge.

Avian Pathol 2019 Apr 10;48(2):91-97. Epub 2018 Dec 10.

a Key Laboratory of Animal Epidemiology of the Ministry of Agriculture , College of Veterinary Medicine, China Agricultural University , Beijing , People's Republic of China.

Intensive vaccination strategies against Newcastle disease (ND) have been implemented in many countries for a long time, but ND outbreaks still occur frequently, with most isolates belonging to genotype VII of Newcastle disease virus (NDV). Many researchers have revealed that vaccines closely matched to epidemic viruses provide better protection. Therefore, using a previously established reverse genetics system, we generated a recombinant NDV vaccine strain (rLa Sota-HN) based on the La Sota vaccine strain expressing the haemagglutinin-neuraminidase (HN) protein of genotype VII NDV. Read More

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http://dx.doi.org/10.1080/03079457.2018.1548754DOI Listing
April 2019
1 Read

Physiological, biochemical and histopathological changes associated with heatstroke in the galah (Eolophus roseicapilla) and rock dove (Columba livia).

Avian Pathol 2019 Feb;48(1):57-72

b School of Animal & Veterinary Sciences , University of Adelaide , Adelaide , Australia.

The pathophysiology of heat illnesses in birds has not been well characterized. In this study, we describe the changes in heart rate, respiratory rate, blood biochemistry and histopathological findings in galahs and rock doves after heat exposure under standardized conditions designed to induce heatstroke. Birds in the heat-exposed group were exposed to environmental heat stress and compared to control birds. Read More

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https://www.tandfonline.com/doi/full/10.1080/03079457.2018.1
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http://dx.doi.org/10.1080/03079457.2018.1546824DOI Listing
February 2019
9 Reads

Vaccination of chickens with the 34 kDa carboxy-terminus of Bpmp72 reduces colonization with Brachyspira pilosicoli following experimental infection.

Avian Pathol 2019 Feb 26;48(1):80-85. Epub 2018 Nov 26.

a School of Veterinary and Life Sciences, Murdoch University , Murdoch , Western Australia , Australia.

The anaerobic intestinal spirochaete Brachyspira pilosicoli colonizes the large intestine of a variety of species of mammals and birds, and may result in colitis, diarrhoea and reductions in growth rate. Naturally occurring infections in chickens are largely confined to adult laying and breeding birds. In this study, the 34 kD carboxy-terminus of the prominent outer membrane protein Bmp72 of B. Read More

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https://www.tandfonline.com/doi/full/10.1080/03079457.2018.1
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http://dx.doi.org/10.1080/03079457.2018.1546377DOI Listing
February 2019
13 Reads

A double recombinant herpes virus of turkeys for the protection of chickens against Newcastle, infectious laryngotracheitis and Marek's diseases.

Avian Pathol 2019 Feb 30;48(1):45-56. Epub 2018 Nov 30.

a Intervet Inc. USA , Elkhorn , NE , USA.

A double recombinant strain of herpes virus of turkeys (HVT) was constructed that contains the fusion (F) gene from Newcastle disease virus (NDV) and the gD plus gI genes from infectious laryngotracheitis virus (ILTV) inserted into a non-essential region of the HVT genome. Expression of the F protein was controlled by a human cytomegalovirus promoter, whereas expression of gD plus gI was driven by an ILTV promoter. The double recombinant vaccine virus (HVT-NDV-ILT) was fully stable genetically and phenotypically following extended passage in cell culture and infection of chickens. Read More

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http://dx.doi.org/10.1080/03079457.2018.1546376DOI Listing
February 2019
1 Read

Biological characteristics and immunological properties in Muscovy ducks of H5N6 virus-like particles composed of HA-TM/HA-TM and M1.

Avian Pathol 2019 Feb 26;48(1):35-44. Epub 2018 Nov 26.

a State Key Laboratory of Biocontrol , Life Sciences School, Sun Yat-sen University , Guangzhou , People's Republic of China.

Highly pathogenic avian influenza viruses (HPAIVs), including H5N6 strains, pose threats to the health of humans and poultry. Waterfowl play a crucial role as a reservoir of HPAIVs. Since current influenza vaccines induce poor antibody titres in waterfowl, there is an urgent need to develop an efficient vaccine against H5N6 infection. Read More

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https://www.tandfonline.com/doi/full/10.1080/03079457.2018.1
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http://dx.doi.org/10.1080/03079457.2018.1546375DOI Listing
February 2019
6 Reads

Fatty liver haemorrhagic syndrome occurrence in laying hens: impact of production system.

Avian Pathol 2019 Feb 8;48(1):25-34. Epub 2018 Nov 8.

a School of Agriculture and Food Sciences , University of Queensland , Gatton , QLD , Australia.

Surveys were conducted with cage and alternative layer production systems to assess the prevalence of fatty liver haemorrhagic syndrome (FLHS). Commercial caged laying hens of different ages from three farms in Queensland were monitored for three months. The mortality rate of flocks ranged from 0. Read More

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http://dx.doi.org/10.1080/03079457.2018.1538550DOI Listing
February 2019
24 Reads

Vaccination of breeder hens with a polyvalent killed vaccine for pathogenic Enterococcus cecorum does not protect offspring from enterococcal spondylitis.

Avian Pathol 2019 Feb 14;48(1):17-24. Epub 2018 Nov 14.

a Department of Population Health and Pathobiology, College of Veterinary Medicine , North Carolina State University , Raleigh , NC , USA.

Pathogenic strains of Enterococcus cecorum cause symmetrical paralysis in broilers due to infection of the free thoracic vertebra. The disease caused by pathogenic E. cecorum, known as enterococcal spondylitis or "kinky-back" continues to be responsible for significant losses to the broiler industry worldwide. Read More

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http://dx.doi.org/10.1080/03079457.2018.1536819DOI Listing
February 2019

Genotyping of Riemerella anatipestifer by ERIC-PCR and correlation with serotypes.

Avian Pathol 2019 Feb 5;48(1):12-16. Epub 2018 Nov 5.

a Respiratory Bacteriology Research Team, Institute for Veterinary Medical Research , Centre for Agricultural Research, Hungarian Academy of Sciences , Budapest , Hungary.

Riemerella anatipestifer (RA) is a widely distributed bacterial pathogen of birds responsible for remarkable losses to poultry production, especially among waterfowl. We characterized the genomic diversity of 166 field isolates of RA, collected from geese and ducks, using enterobacterial repetitive intergenic consensus (ERIC)-polymerase chain reaction (PCR). The field strains and five reference strains showed 17 distinct patterns consisting of five to 12 bands ranging from approximately 150-1800bp. Read More

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http://dx.doi.org/10.1080/03079457.2018.1535693DOI Listing
February 2019
1 Read
1.640 Impact Factor

Pathology of clade 2.3.2.1 avian influenza virus (H5N1) infection in quails and ducks in Bangladesh.

Avian Pathol 2019 Feb 25;48(1):73-79. Epub 2018 Oct 25.

a Department of Pathology, Faculty of Veterinary Science , Bangladesh Agricultural University , Mymensingh , Bangladesh.

We performed pathological and molecular virological investigation of three outbreaks of highly pathogenic avian influenza (HPAI) in a quail farm and two duck farms of Mymensingh and Netrokona districts of Bangladesh in 2011. HPAI viruses of subtype H5N1 were detected from all three outbreaks and phylogenetic analysis of HA gene sequence placed the viruses into clade 2.3. Read More

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http://dx.doi.org/10.1080/03079457.2018.1535165DOI Listing
February 2019
7 Reads

Construction and characterization of an OmpH-deficient mutant of Pasteurella multocida strain X-73.

Avian Pathol 2019 Feb 22;48(1):4-11. Epub 2018 Oct 22.

a Faculty of Veterinary Medicine , Chiang Mai University , Muang, Chiang Mai , Thailand.

A capsule-defective mutant strain PBA129 of Pasteurella multocida was constructed by electroporation of phagemid containing the coding region of the antisense RNA of the ompH gene into the wild type strain X-73 (serovar A:1) of P. multocida. The pathogenicity and protective potency of the mutant against homologous and heterologous challenge in mice and chickens were characterized. Read More

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https://www.tandfonline.com/doi/full/10.1080/03079457.2018.1
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http://dx.doi.org/10.1080/03079457.2018.1533239DOI Listing
February 2019
1 Read

Avian parvovirus: classification, phylogeny, pathogenesis and diagnosis.

Avian Pathol 2018 Dec 24;47(6):536-545. Epub 2018 Sep 24.

b Meat Safety Laboratory , ICAR-National Research Centre on Meat , Chengicherla, Hyderabad , India.

Poultry parvoviruses identified during the early 1980s are found worldwide in intestines from young birds with enteric disease syndromes as well as healthy birds. The chicken parvovirus (ChPV) and turkey parvovirus (TuPV) belong to the Aveparvovirus genus within the subfamily Parvovirinae. Poultry parvoviruses are small, non-enveloped, single-stranded DNA viruses consisting of three open reading frames, the first two encoding the non-structural protein (NS) and nuclear phosphoprotein (NP) and the third encoding the viral capsid proteins 1 (VP1 and VP2). Read More

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http://dx.doi.org/10.1080/03079457.2018.1517938DOI Listing
December 2018
1 Read

Spotlight on avian pathology: current growth-related breast meat abnormalities in broilers.

Avian Pathol 2019 Feb 24;48(1):1-3. Epub 2018 Sep 24.

a Department of Agricultural and Food Sciences , Alma Mater Studiorum - University of Bologna , Cesena , Italy.

Selection for fast-growing and high-breast-yield hybrids has enormously increased the pressure on muscle development rate and mass, indirectly promoting the development of muscular abnormalities affecting the pectoral muscles such as White Striping, Wooden Breast and Spaghetti Meat. Macroscopically, the muscles affected by these defects exhibit distinctive traits, whereas the microscopic examinations evidenced similar histological alterations. Therefore, a common causative mechanism (involving genes related to several metabolic pathways and functional categories) underpinning the occurrence of these abnormalities may be hypothesized and directly associated with muscle hypertrophy induced by selection. Read More

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http://dx.doi.org/10.1080/03079457.2018.1508821DOI Listing
February 2019
5 Reads

B-mode ultrasonographic evaluation of long bones in Falconiformes and Strigiformes birds.

Avian Pathol 2018 Dec 8;47(6):625-629. Epub 2018 Oct 8.

a Veterinary Hospital - Wild life Sector, Universidade Federal do Pará , Brazil.

Bone fractures in birds are usually diagnosed with the aid of traditional radiography. However, this technique remains limited because of the difficulties associating this examination with real-time procedures. The aim of this study was to describe the use of B-mode ultrasound to assess the long bones of two avian orders. Read More

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http://dx.doi.org/10.1080/03079457.2018.1526372DOI Listing
December 2018
3 Reads

A review on the current situation and challenges of colistin resistance in poultry production.

Avian Pathol 2018 Dec 2;47(6):546-558. Epub 2018 Oct 2.

a Department of Comparative Biomedicine and Food Science , University of Padua , Legnaro , Italy.

Colistin has been re-assessed as a critically important antimicrobial in humans due to its efficacy against multi-drug resistant Gram-negative bacteria, in particular P. aeruginosa, A. baumannii, and K. Read More

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http://dx.doi.org/10.1080/03079457.2018.1524573DOI Listing
December 2018

Heat stress as a predisposing factor for necrotic enteritis in broiler chicks.

Avian Pathol 2018 Dec 28;47(6):616-624. Epub 2018 Sep 28.

e Laboratory of Animal Science, School of Veterinary Medicine, Faculty of Health Sciences , Aristotle University of Thessaloniki , Thessaloniki , Greece.

Heat stress is a physical environmental stressor, which can affect performance, health and welfare of poultry. The present study investigates the effect of cyclic acute heat stress as a predisposing factor for necrotic enteritis in broiler chicks in an experimental challenge model. Two hundred and forty broiler chicks were randomly allocated to four treatment groups, as follows: group A served as negative control (25°C), group B birds were subjected to cyclic acute heat stress (35°C), group C birds were challenged and group D birds were both subjected to heat stress and challenged. Read More

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http://dx.doi.org/10.1080/03079457.2018.1524574DOI Listing
December 2018
20 Reads

Domestic canaries (Serinus canaria forma domestica) are susceptible to low pathogenic avian influenza virus infections.

Avian Pathol 2018 Dec 11;47(6):607-615. Epub 2018 Oct 11.

a Avian Virology & Immunology , Sciensano , Brussels , Belgium.

Avian influenza viruses have been isolated from many bird species; however, little is known about the susceptibility of pet birds to low pathogenic avian influenza (LPAI) viruses. To address this research gap, domestic canaries (Serinus canaria forma domestica) were experimentally infected with H5 and H7 LPAI viruses to determine susceptibility and to evaluate samples for diagnostic purposes. Clinical evidence of infection (e. Read More

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http://dx.doi.org/10.1080/03079457.2018.1520966DOI Listing
December 2018
4 Reads

Field and laboratory findings following the large-scale use of intermediate type infectious bursal disease vaccines in Denmark.

Avian Pathol 2018 Dec 2;47(6):595-606. Epub 2018 Oct 2.

b GD Animal Health , Deventer , the Netherlands.

Following a period of clinical outbreaks of very virulent infectious bursal disease virus (vvIBDV) in Denmark, the histological bursal lesion score (HBLS) was used on a national scale to screen broiler flocks vaccinated with intermediate IBD vaccines for lesions indicative of IBDV challenge. High lesion scores were detected in a high percentage of healthy and well performing flocks despite the lack of other indications of the presence of vvIBDV. RT-PCR and subsequent sequencing showed the frequent presence of H253Q and H253N IBDV strains that were genetically close to the sequence of the intermediate vaccines with a relative risk ratio of 13. Read More

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https://www.tandfonline.com/doi/full/10.1080/03079457.2018.1
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http://dx.doi.org/10.1080/03079457.2018.1520388DOI Listing
December 2018
6 Reads

Analysis of alternative splicing in chicken embryo fibroblasts in response to reticuloendotheliosis virus infection.

Avian Pathol 2018 Dec 20;47(6):585-594. Epub 2018 Sep 20.

a Laboratory Pathological Physiology, College of Veterinary Medicine , Northeast Agricultural University , Harbin , People's Republic of China.

Alternative splicing (AS) plays a significant role in regulation of genomic expression at the transcriptional level and is involved in many important biological functions of cells, thus a gene can be spliced into distinct transcript variants then translated to many different kinds of protein. Reticuloendotheliosis virus (REV) is a kind of retrovirus that can infect multiple avian species, leading to runting syndrome, immunosuppression and oncogenesis. In this present study, we analyzed AS in REV-infected chicken embryo fibroblasts (CEFs) which were inoculated with the second generation of REV (group VB) and compared with normal CEFs (group C) by high-throughput RNA sequencing technology. Read More

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http://dx.doi.org/10.1080/03079457.2018.1511047DOI Listing
December 2018
3 Reads

A proposed nomenclature for infectious bursal disease virus isolates.

Avian Pathol 2018 Dec 12;47(6):576-584. Epub 2018 Oct 12.

c GD Animal Health, Department R&D , Deventer , The Netherlands.

Infectious bursal disease virus (IBDV) was initially identified in the USA. For decades, these viruses were not categorized using a typing system because they were considered to be antigenically and pathogenically similar. In the 1980s, a second major serotype, serotype 2, was found in turkeys. Read More

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https://www.tandfonline.com/doi/full/10.1080/03079457.2018.1
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http://dx.doi.org/10.1080/03079457.2018.1506092DOI Listing
December 2018
23 Reads

Circulation of very virulent avian infectious bursal disease virus in Finland.

Avian Pathol 2018 Oct 12;47(5):520-525. Epub 2018 Sep 12.

a Research and Laboratory Services Department/Virology Research Unit , Finnish Food Safety Authority Evira , Helsinki , Finland.

In the spring of 2014 infectious bursal disease (IBD) was confirmed in a Finnish layer flock exhibiting clinical signs and increased mortality. Organ and blood samples were sent for diagnosis to the Finnish Food Safety Authority Evira. IBD virus (IBDV) was detected in RT-PCR studies. Read More

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https://www.tandfonline.com/doi/full/10.1080/03079457.2018.1
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http://dx.doi.org/10.1080/03079457.2018.1503642DOI Listing
October 2018
1 Read