6,623 results match your criteria Avian diseases[Journal]


Avian Filariasis in Backyard Chickens in Japan.

Avian Dis 2018 Sep;62(3):326-329

D National Institute of Animal Health, 3-1-5 Kannondai, Tsukuba, Ibaraki 305-0856, Japan.

In May 2017, a hen in a backyard chicken flock in Japan exhibited mild clinical signs, and the bird was examined for diagnosis. Unexpectedly, many microfilariae were observed in the lung by histologic examination, although no adult worms were detected within the body. In a blood test performed in July, microfilaremia was confirmed in a few clinically normal chickens of the same flock. Read More

View Article

Download full-text PDF

Source
http://www.bioone.org/doi/10.1637/11894-050818-Case.1
Publisher Site
http://dx.doi.org/10.1637/11894-050818-Case.1DOI Listing
September 2018
12 Reads

Avian Influenza in the U.S. Commercial Upland Game Bird Industry: An Analysis of Selected Practices as Potential Exposure Pathways and Surveillance System Data Reporting.

Avian Dis 2018 Sep;62(3):307-315

A Secure Food Systems Team, University of Minnesota, Veterinary and Biomedical Sciences, 301C Veterinary Science Building, 1971 Commonwealth Avenue, St. Paul, MN 55108.

Producing a smaller yield of higher-value birds compared to conventional poultry production, the U.S. commercial upland game bird industry deals primarily in the sale of live birds for recreational hunting. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1637/11814-021518-Reg.1DOI Listing
September 2018
5 Reads

A Review of Enterococcus cecorum Infection in Poultry.

Avian Dis 2018 Sep;62(3):261-271

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

Enterococcus cecorum was initially identified as a harmless commensal of the gastrointestinal tract of chickens. However, over the past 15 yr, pathogenic strains of E. cecorum have become a significant cause of morbidity and mortality in broiler breeders, and repeated outbreaks occur, but an environmental reservoir for pathogenic E. Read More

View Article

Download full-text PDF

Source
http://www.bioone.org/doi/10.1637/11825-030618-Review.1
Publisher Site
http://dx.doi.org/10.1637/11825-030618-Review.1DOI Listing
September 2018
21 Reads

Virus-Induced Immunosuppression in Chickens.

Avian Dis 2018 Sep;62(3):272-285

B Department of Microbiology and Immunology, College of Veterinary Medicine, Cornell University, Ithaca, NY 14853.

A healthy immune system is a cornerstone for poultry production. Any factor diminishing the immune responses will affect production parameters and increase cost. There are numerous factors, infectious and noninfectious, causing immunosuppression (IS) in chickens. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1637/11841-041318-Review.1DOI Listing
September 2018
2 Reads

In Ovo Administration of Innate Immune Stimulants and Protection from Early Chick Mortalities due to Yolk Sac Infection.

Avian Dis 2018 Sep;62(3):316-321

A Vaccine and Infectious Disease Organization-International Vaccine Centre, University of Saskatchewan, Saskatoon, Saskatchewan, Canada S7N 5E3.

Omphalitis or yolk sac infection (YSI) and colibacillosis are the most common infectious diseases that lead to high rates of early chick mortalities (ECMs) in young chicks. Out of numerous microbial causes, avian pathogenic Escherichia coli (APEC) or extraintestinal pathogenic E. coli infections are considered the most common cause of these conditions. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1637/11840-041218-Reg.1DOI Listing
September 2018
4 Reads

The Prevalence of Yeast and Characteristics of the Isolates from the Digestive Tract of Clinically Healthy Turkeys.

Avian Dis 2018 Sep;62(3):286-290

B Department of Epizootiology with Clinic of Bird and Exotic Animals, Wroclaw University of Environmental and Life Sciences, pl. Grunwaldzki, 45 50-366 Wrocław, Poland.

This study was undertaken to explore the issue of yeast species prevalence in colonizing the gastrointestinal tract of healthy turkeys. The samples were collected from the beak cavity, crop, and cloaca of 5-wk-old turkeys, cultured and classified using morphological, biochemical, and genetic analysis based on ITS1-5.8rRNA-ITS2 fragment sequencing. Read More

View Article

Download full-text PDF

Source
http://www.bioone.org/doi/10.1637/11780-121117-Reg.1
Publisher Site
http://dx.doi.org/10.1637/11780-121117-Reg.1DOI Listing
September 2018
15 Reads

Evaluating Virulence-Associated Genes and Antimicrobial Resistance of Avian Pathogenic Escherichia coli Isolates from Broiler and Broiler Breeder Chickens in Ontario, Canada.

Avian Dis 2018 Sep;62(3):291-299

H Department of Population Medicine, Ontario Veterinary College, University of Guelph, Guelph, Ontario, Canada, N1G 2W1.

Avian pathogenic Escherichia coli (APEC) is the causative agent of colibacillosis in poultry, an economically important disease worldwide. In Ontario, Canada, early and late systemic bacterial infections due to APEC were the most commonly reported diseases in broiler chickens. In 2016, Ontario poultry veterinarians submitted samples from 331 cases of broiler and broiler breeder chickens with a high suspicion of colibacillosis to the Animal Health Laboratory (Guelph, Ontario, Canada) for bacterial culture. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1637/11834-032818-Reg.1DOI Listing
September 2018
2 Reads

Identical Genetic Profiles of Escherichia coli Isolates from the Gut and Systemic Organs of Chickens Indicate Systemic Bacterial Dissemination, Most Likely Due to Intestinal Destruction Caused by Histomonosis.

Avian Dis 2018 Sep;62(3):300-306

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

In laying and breeding chickens, pathomorphological signs of histomonosis often coincide with colibacillosis. Thus, we investigated the systemic spread of Escherichia coli in chickens affected with histomonosis and colibacillosis by characterizing their pheno- and genotypic profiles. For this, 29 birds from 11 affected flocks were necropsied and up to three E. Read More

View Article

Download full-text PDF

Source
http://www.bioone.org/doi/10.1637/11816-021818-Reg.1
Publisher Site
http://dx.doi.org/10.1637/11816-021818-Reg.1DOI Listing
September 2018
16 Reads

Adenoviral Gizzard Erosions in Two Belgian Broiler Farms.

Avian Dis 2018 Sep;62(3):322-325

A Department of Pathology, Bacteriology and Avian Diseases, Faculty of Veterinary Medicine, Ghent University, Salisburylaan 133, B9820 Merelbeke, Belgium.

Fowl adenovirus infections are widely prevalent in poultry. Many of the viruses can infect chickens without resulting in overt disease. Nevertheless, some fowl adenoviruses can cause important disease complexes in chickens such as inclusion body hepatitis, hydropericardium syndrome, necrotic pancreatitis, and gizzard erosion. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1637/11826-030918-Case.1DOI Listing
September 2018
2 Reads

Epidemic Characteristics of Clinical Histomoniasis in Chicken Flocks in Eastern China.

Avian Dis 2018 Jun;62(2):189-194

A Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Jiangsu Province 225009, People's Republic of China.

Preliminary diagnosis of clinical symptoms and gross lesions with subsequent histopathologic and PCR analyses revealed histomoniasis in 276 chicken flocks in Jiangsu Province, China, and surrounding areas from January 2012 to December 2015. Detailed statistical analysis was performed to explore the occurrence and epidemic characteristics of histomoniasis in chicken flocks. The results indicated that histomoniasis usually occurred in free-range flocks of local broilers and laying hens. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1637/11792-122917-Reg.1DOI Listing
June 2018
5 Reads

Avian Influenza Virus Surveillance in High Arctic Breeding Geese, Greenland.

Avian Dis 2018 Jun;62(2):237-240

B Institut Pasteur, Unité Environnement et Risques Infectieux, Cellule d'Intervention Biologique d'Urgence (CIBU), 28 rue du Dr Roux, Paris, France.

The connectedness in Arctic regions between migratory waterbird populations originating from different continents and the potential for virus exchange at their shared Arctic breeding ground point to the need to explore the largely unstudied circumpolar circulation of avian influenza viruses (AIV). We here report the investigation of AIV in wild birds and lakes in a high Arctic area of Northeast Greenland. No AIV could be detected in the fecal, feather, and water samples collected from large flocks of pink-footed geese Anser brachyrhynchus and barnacle geese Branta leucopsis in and around refuge lakes, where they congregate at high density during their flightless molting period in summer. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1637/11793-010418-ResNote.1DOI Listing
June 2018
5 Reads

Profiling of Egg Layer Flocks Affected with Focal Duodenal Necrosis Based on a Questionnaire Survey.

Avian Dis 2018 Jun;62(2):241-246

A Poultry Diagnostic and Research Center.

Focal duodenal necrosis (FDN) is an intestinal disease of egg-laying chickens, characterized by multifocal mucosal erosions in the duodenal loop and proximal jejunum. It is currently considered by the Association of Veterinarians in Egg Production and the United States Animal Health Association as one of the top five disease concerns of the table egg industry in the United States. Previous studies have associated this condition with Clostridium species. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1637/11783-121617-ResNote.1DOI Listing
June 2018
19 Reads

Identification of Novel Linear Epitopes Located in the Infectious Bronchitis Virus Spike S2 Region.

Avian Dis 2018 Jun;62(2):210-217

A Animal Pharmaceuticals Division, Chemo-Sero-Therapeutic Research Institute, 1-6-1 Okubo, Kita-ku, Kumamoto, Kumamoto 860-8568, Japan.

We identified novel linear epitopes on the infectious bronchitis virus (IBV) spike S2 region. The conformational structure of the IBV spike protein was predicted from a homologous protein, human coronavirus NL63 spike. Although the obtained structure was incomplete, most of the IBV spike protein structure was predicted; the N-terminus of the S1 region could not be predicted due to its variability. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1637/11796-011518-Reg.1DOI Listing
June 2018
5 Reads

Using Multinomial and Space-Time Permutation Models to Understand the Epidemiology of Infectious Bronchitis in California Between 2008 and 2012.

Avian Dis 2018 Jun;62(2):226-232

C Department of Population Health and Reproduction, School of Veterinary Medicine-Cooperative Extension, University of California Davis, Davis, California, 95616.

Although infectious bronchitis virus (IBV) has been described as one of the most economically important viral respiratory diseases in poultry, there are few analyses of outbreaks that use spatial statistics. In order to better understand how the different genotypes of IBV behave spatially and temporally, we used geographic information system-based mapping coupled with spatial and spatial-temporal statistics to identify statistically significant clustering of multiple strains of infectious bronchitis (IB) between 2008 and 2012 in California. Specifically, space-time permutation and multinomial models were used to identify spatial and spatial-temporal clusters of various genotypes of IBV. Read More

View Article

Download full-text PDF

Source
http://www.bioone.org/doi/10.1637/11788-122217-Reg.1
Publisher Site
http://dx.doi.org/10.1637/11788-122217-Reg.1DOI Listing
June 2018
4 Reads

Detection and Characterization of Circovirus in Canary Flocks.

Avian Dis 2018 Jun;62(2):137-142

B Department of Microbiology and Immunology, Faculty of Veterinary Medicine, University of Tehran, Tehran, Iran: 1417614418.

Circovirus infections have been documented in adult and nestling canaries (Fringillidae) but the distribution of the virus in the world is not yet known. In captive canary flocks, Circovirus infections have been reported based on the clinical observations. In this study, the presence of both canary circovirus (CaCV) and chicken anemia virus (CAV) in canary flocks was investigated. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1637/11776-120417-RegRDOI Listing
June 2018
11 Reads

Variant Serotypes of Fowl Adenovirus Isolated from Commercial Poultry Between 2007 and 2017 in Some Regions of China.

Avian Dis 2018 Jun;62(2):171-176

A College of Veterinary Medicine, Qingdao Agricultural University, Qingdao, 266109, China.

The present study was performed to detect and characterize the serotypes of fowl adenovirus associated with inclusion body hepatitis (IBH) or hepatitis-hydropericardium syndrome (HHS) in commercial poultry in some regions of China between 2007 and 2017. Approximately 81 fowl adenovirus strains were isolated from liver or kidney samples from diseased poultry. A sequencing analysis of the hexon loop 1 gene revealed fowl adenovirus serotypes 8a, 8b, and 11 in samples of broilers with IBH, serotype 11 in layers with IBH, and serotype 4 in poultry with HHS. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1637/11794-010618-Reg.1DOI Listing
June 2018
7 Reads
1.240 Impact Factor

White Chick Syndrome Associated with Chicken Astrovirus in Ontario, Canada.

Avian Dis 2018 Jun;62(2):247-258

D Animal Health Laboratory, University of Guelph, Guelph, Ontario, Canada N1H 6R8.

Sixty-four cases of white chick syndrome (WCS) in broiler breeders producing affected progeny were reported from seven hatcheries in Ontario, Canada, between 2009 and 2016, with 43 of those originating from two hatcheries owned by a single company. WCS cases were identified by the presence of typical chicks in the hatchery that were generally weak with pale to white down, enlarged abdomens, and occasionally brown wiry fluff on the dorsum of the neck. Affected embryos and chicks had characteristic gross and histologic liver lesions, and livers were positive for chicken astrovirus (CAstV) RNA by real-time reverse transcriptase PCR. Read More

View Article

Download full-text PDF

Source
http://www.bioone.org/doi/10.1637/11802-012018-Case.1
Publisher Site
http://dx.doi.org/10.1637/11802-012018-Case.1DOI Listing
June 2018
14 Reads

Expert Elicitation Provides a Rapid Alternative to Formal Case-Control Study of an H7N9 Avian Influenza Outbreak in the United States.

Avian Dis 2018 Jun;62(2):201-209

I Georgia Poultry Laboratory Network, 3235 Abit Massay Way, Gainesville, GA 30507.

An expert elicitation was staged to rapidly decipher plausible routes and risks of pathogen transmission in the 2017 H7N9 avian influenza (AI) outbreak in the four-state region of Tennessee, Alabama, Georgia, and Kentucky. The process included the identification of risk factors found in a preponderance of commercial broiler breeder case farms over matched controls and an opinion-based weighting of risks and mitigations perceived influential to this outbreak. Although the two highly pathogenic AI case farms had general location and company ownership in common, obvious connections were lacking for the remainder of H7N9-infected (all low pathogenicity) commercial farms. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1637/11801-011818-Reg.1DOI Listing
June 2018
3 Reads

Bactericidal Efficacy of Food Additive-Grade Calcium Hydroxide Against Salmonella Infantis on Eggshells.

Avian Dis 2018 Jun;62(2):177-183

A Laboratory of Animal Health, Department of Veterinary Medicine, Faculty of Agriculture, Tokyo University of Agriculture and Technology, 3-5-8, Saiwai-cho, Fuchu-shi, Tokyo 183-8509, Japan.

The bactericidal efficacy of food additive-grade calcium hydroxide [FdCa(OH)] was evaluated for inactivation of Salmonella Infantis and Salmonella Enteritidis in liquid and Salmonella Infantis on contaminated eggshells. The activity of FdCa(OH) was also compared with that of sodium hypochlorite (NaOCl) containing 150 ppm chlorine (150 ppm NaOCl). FdCa(OH) solutions (0. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1637/11677-052117-Reg.1DOI Listing
June 2018
7 Reads

Genetic Characterization of Infectious Bursal Disease Viruses from Field Outbreaks of the North East Region of India.

Avian Dis 2018 Jun;62(2):218-225

Department of Veterinary Pathology, College of Veterinary Sciences and Animal Husbandry, Central Agricultural University, Aizawl, Mizoram, India 796014.

In recent years, acute severe outbreaks of infectious bursal disease (IBD) are frequently observed in commercial chicken populations of the North East Region (NER) of India, resulting in huge economic loses to poultry farmers. Field outbreaks of IBD in 30 different poultry farms in the NER were confirmed by clinicopathologic examination and reverse transcriptase PCR. A total of 10 isolates of IBD virus (IBDV) from these outbreaks were characterized by the genetic analysis of VP1 and the hypervariable region of the VP2 gene. Read More

View Article

Download full-text PDF

Source
http://www.bioone.org/doi/10.1637/11810-021118-Reg.1
Publisher Site
http://dx.doi.org/10.1637/11810-021118-Reg.1DOI Listing
June 2018
13 Reads

Streptococcosis in Commercial and Noncommercial Avian Species in California: 95 Cases (2000-2017).

Avian Dis 2018 Jun;62(2):152-162

A University of California, Davis, California Animal Health and Food Safety Laboratory System Turlock Branch, 1550 N. Soderquist Road, Turlock, CA 95380.

Streptococcal bacterial species represent common inhabitants of the intestinal tract of animals and humans with a potential for opportunistic infections. Streptococcosis has been identified in turkey poults ( Meleagris gallopavo), ducklings and goslings (Anatidae), broiler chickens, semimature-adult chickens ( Gallus gallus domesticus), and young and adult pigeons (Columbidae). However, the exact underlying factors that lead to bacterial invasion of the blood stream and tissue colonization have not been completely elucidated. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1637/11765-103117-Reg.1DOI Listing
June 2018
5 Reads

Virulence of Escherichia coli Isolates Obtained from Layer Chickens with Colibacillosis Associated with Pericarditis, Perihepatitis, and Salpingitis in Experimentally Infected Chicks and Embryonated Eggs.

Avian Dis 2018 Jun;62(2):233-236

A Laboratory of Veterinary Microbiology, Faculty of Agriculture, Tottori University, 4-101 Koyama, Tottori, 680-8553, Japan.

To evaluate the virulence of avian pathogenic Escherichia coli (APEC) isolates obtained from colibacillosis cases associated with pericarditis, perihepatitis, and salpingitis, the embryo lethality assay and experimental infection model in chicks were used in this study. According to the established criteria based on mortality in the embryo lethality assay for evaluating the virulence of E. coli isolates, 23 of the 26 APEC isolates associated with pericarditis and perihepatitis and 8 of the 20 isolates associated with salpingitis were found to be virulent. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1637/11685-060717-ResNote.1DOI Listing
June 2018
3 Reads

Survey for Bacteria and Antimicrobial Resistance in Wild Turkeys ( Meleagris gallopavo) in Ontario, Canada.

Avian Dis 2018 Jun;62(2):184-188

A Department of Pathobiology, Ontario Veterinary College, University of Guelph, Guelph, ON, Canada, NIG 2W1.

Since being successfully reintroduced into Ontario, Canada, wild turkey ( Meleagris gallopavo) populations have undergone robust growth and range expansion. This, along with increases in land use changes from human population growth and subsequent developments in agriculture and livestock production, has heightened opportunities for interactions between wild turkeys, domestic poultry, and humans. As conspecifics, wild and domestic turkeys are susceptible to infection and disease from many of the same pathogens. Read More

View Article

Download full-text PDF

Source
http://www.bioone.org/doi/10.1637/11807-020618-Reg.1
Publisher Site
http://dx.doi.org/10.1637/11807-020618-Reg.1DOI Listing
June 2018
10 Reads

Attenuation and Protection Efficacy of a Recombinant Infectious Laryngotracheitis Virus (ILTV) Depleted of Open Reading Frame C (ΔORFC) when Delivered in ovo.

Avian Dis 2018 Jun;62(2):143-151

A Poultry Diagnostic and Research Center, Department of Population Health, College of Veterinary Medicine, University of Georgia, 953 College Station Road, Athens, GA 30602.

In an effort to produce more stable vaccines for infectious laryngotracheitis virus (ILTV), recombinant strains with deletion of genes associated with virulence have been evaluated for attenuation and protection efficacy. Among viral genes associated with virulence, a cluster of five open reading frames (ORFs; A through E) have been identified. An attenuated ILTV recombinant strain with deletion of the ORF C gene induced protection comparable to that elicited by the tissue culture origin (TCO) vaccine when administered via eyedrop. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1637/11585-010917-RegRDOI Listing
June 2018
4 Reads

Gross Morphometry, Histomorphometry, and Immunohistochemistry Confirm Early and Persistent Jejunal Crypt Hyperplasia in Poults with Enteritis and Depressed Growth.

Avian Dis 2018 Jun;62(2):163-170

B Department of Clinical Sciences, College of Veterinary Medicine, NC State University, 1060 William Moore Dr., Raleigh, NC 27607.

Phosphorylated histone 3 (PH3) and cleaved caspase 3 (CCASP3) were used to detect proliferating and apoptotic cells, respectively, in the jejunums of female sibling poults, with and without enteritis and depressed growth, from hatch to day 35. Poults that developed enteritis and depressed growth (SIB flock) were raised on a commercial farm in eastern North Carolina, whereas poults with normal growth and no enteritis (TAU flock) were raised in the Teaching Animal Unit at North Carolina State University College of Veterinary Medicine. Beginning on day 5 through day 35 and at processing, TAU poults were significantly heavier than SIB poults. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1637/11759-101717-Reg.1DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6176685PMC
June 2018
8 Reads

Evaluation of Two Multiplex PCR-High-Resolution Melt Curve Analysis Methods for Differentiation of Campylobacter jejuni and Campylobacter coli Intraspecies.

Avian Dis 2018 Mar;62(1):86-93

A School of Animal and Veterinary Sciences, Charles Sturt University, Wagga Wagga, New South Wales, Australia 2678.

Campylobacter infection is a common cause of bacterial gastroenteritis in humans and remains a significant global public health issue. The capability of two multiplex PCR (mPCR)-high-resolution melt (HRM) curve analysis methods (i.e. Read More

View Article

Download full-text PDF

Source
http://www.bioone.org/doi/10.1637/11739-080417-Reg.1
Publisher Site
http://dx.doi.org/10.1637/11739-080417-Reg.1DOI Listing
March 2018
15 Reads
1.240 Impact Factor

Recombinant Fiber-2 Protein-Based Indirect ELISA for Antibody Detection of Fowl Adenovirus Serotype 4.

Avian Dis 2018 Mar;62(1):73-78

A Key Laboratory of Animal Epidemiology of the Ministry of Agriculture, College of Veterinary Medicine, China Agricultural University, Beijing, People's Republic of China 100193.

Clinical cases of hepatitis-hydropericardium syndrome (HHS) from fowl adenovirus serotype 4 (FAdV-4) have increased in China since 2013. Therefore, the development of a new serologic method for HHS detection is now urgent. Here, the FAdV-4 strain JSJ13 was used to construct a plasmid for prokaryotic expression of the JSJ13 fiber-2 protein. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1637/11758-100917-Reg.1DOI Listing
March 2018
9 Reads

Study of an Outbreak of Highly Pathogenic Avian Influenza H5N8 in Commercial Pekin Ducks ( Anas platyrhynchos domesticus) in California.

Avian Dis 2018 Mar;62(1):101-108

C California Animal Health & Food Safety Laboratory System, Tulare Branch, 18830 Road 112, Tulare, CA 93274.

A February 2015 outbreak of highly pathogenic avian influenza (HPAI) H5N8 in a flock of commercial Pekin ducks ( Anas platyrhynchos domesticus) in California was investigated in detail. Approximately 17,349 five-wk-old ducks experienced an increased mortality from a normal of eight birds per day to 24, 18, 24, 33, and 61 birds per day, respectively, in the last 5 days prior to flock depopulation. Clinically, there was decreased water and feed consumption, and approximately 1. Read More

View Article

Download full-text PDF

Source
http://www.bioone.org/doi/10.1637/11773-112017-Reg.1
Publisher Site
http://dx.doi.org/10.1637/11773-112017-Reg.1DOI Listing
March 2018
16 Reads

Tetratrichomonas and Trichomonas spp.-Associated Disease in Free-Ranging Common Eiders ( Somateria mollissima) from Wellfleet Bay, MA and Description of ITS1 Region Genotypes.

Avian Dis 2018 Mar;62(1):117-123

B Center for Wildlife Health, The University of Tennessee, 2431 Joe Johnson Drive, Knoxville, TN 37996.

During an outbreak of Wellfleet Bay virus (WFBV) in common eiders ( Somateria mollissima) from the Cape Cod region of Massachusetts, several birds were diagnosed with trichomonosis consisting of multiple trichomonad species. Six birds were examined, with trichomonads found in ceca in four birds and associated typhlitis in three of these four birds. PCR and DNA sequencing utilizing trichomonad-specific primers targeting the ITS1 region of the ribosomal DNA (rDNA) revealed the presence of Tetratrichomonas gallinarum in the gastrointestinal tracts of five birds and Trichomonas spp. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1637/11742-080817-Reg.1DOI Listing
March 2018
7 Reads

Detection of Mycoplasma gallisepticum in House Finches ( Haemorhous mexicanus) from Arizona.

Avian Dis 2018 Mar;62(1):14-17

A Department of Biological Sciences, Auburn University, Auburn, AL 36849.

In 1994, an endemic poultry pathogen, Mycoplasma gallisepticum (MG), was identified as the causative agent of a novel disease in house finches ( Haemorhous mexicanus). After an initial outbreak in Maryland, MG spread rapidly throughout eastern North American populations of house finches. Subsequently, MG spread slowly through the northern interior of North America and then into the Pacific Northwest, finally reaching California in 2006. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1637/11610-021317-Reg.1DOI Listing
March 2018
8 Reads

The Effect of Infectious Bursal Disease Virus-Induced Immunosuppression on Vaccination Against Highly Pathogenic Avian Influenza Virus.

Avian Dis 2018 Mar;62(1):36-44

Southeast Poultry Research Laboratory, United States National Poultry Research Center, United States Department of Agriculture, Agricultural Research Service, 934 College Station Rd., Athens, GA 30605.

Poor efficacy of avian influenza virus (AIV) vaccines in chickens has been documented in the field in spite of good results in experimental settings. Although the causes are multifactorial and complex, one contributing factor may be prior infection with immunosuppressive viruses. In an effort to evaluate the role of immunosuppressive agents on AIV pathogenesis and vaccine efficacy, the effect of prior infection with infectious bursal disease virus (IBDV), a ubiquitous immunosuppressive virus of chickens, was evaluated. Read More

View Article

Download full-text PDF

Source
http://www.bioone.org/doi/10.1637/11769-110717-Reg.1
Publisher Site
http://dx.doi.org/10.1637/11769-110717-Reg.1DOI Listing
March 2018
14 Reads

Liposarcoma in a Backyard Silkie and Retrospective Summary of Neoplasms Diagnosed in Backyard Chickens Submitted to the California Animal Health and Food Safety Laboratory System, 2008-2017.

Avian Dis 2018 Mar;62(1):124-129

California Animal Health & Food Safety Laboratory System, University of California, Davis, Turlock Branch, 1550 North Soderquist Road, Turlock, CA 95381.

Liposarcomas are a malignant neoplasm of adipocytes, and are rarely diagnosed in avian species. This case report describes the evidence supporting a diagnosis of metastatic liposarcoma in a backyard silkie chicken. On September 28, 2017, a dead 3-yr-old backyard silkie chicken, with a history of unknown skin lesions involving the entire body and severe weight loss, was submitted to California Animal Health and Food Safety Laboratory System-Turlock branch for necropsy. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1637/11782-121217-Case.1DOI Listing
March 2018
6 Reads

Isolation and Characterization of Campylobacter hepaticus from Layer Chickens with Spotty Liver Disease in the United States.

Avian Dis 2018 Mar;62(1):79-85

A Versova Laboratory, 2325 North Loop Drive, Building 6, Ames, IA 50010.

Spotty liver disease (SLD) is characterized by multifocal liver lesions, mortality, and drop in egg production. The disease is emerging in Europe and Australia, particularly in free-range and floor-raised layer flocks. Campylobacter hepaticus has been recently identified as the causative agent of SLD. Read More

View Article

Download full-text PDF

Source
http://www.bioone.org/doi/10.1637/11752-092017-Reg.1
Publisher Site
http://dx.doi.org/10.1637/11752-092017-Reg.1DOI Listing
March 2018
20 Reads

The Effect of the Wooden Breast Myopathy on Sarcomere Structure and Organization.

Avian Dis 2018 Mar;62(1):28-35

Department of Animal Sciences, Ohio Agricultural Research and Development Center, The Ohio State University, Wooster, OH 44691.

The wooden breast (WB) has been classically identified by the phenotypic presence of a wood-like pectoralis major (p. major) muscle. The WB-affected p. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1637/11766-110217-Reg.1DOI Listing
March 2018
6 Reads

Biosecurity Assessment and Seroprevalence of Respiratory Diseases in Backyard Poultry Flocks Located Close to and Far from Commercial Premises.

Avian Dis 2018 Mar;62(1):1-5

A Department of Population Health and Reproduction, School of Veterinary Medicine, University of California, 1089 Veterinary Medicine Drive VM3B, Davis, CA 95616.

Raising backyard chickens is an ever-growing hobby in the United States. These flocks can be a substrate for respiratory disease amplification and transmission to commercial facilities. Five hundred fifty-four chickens from 41 backyard flocks were sampled in this study. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1637/11672-050917-Reg.1DOI Listing
March 2018
8 Reads

Propagation of an Avirulent Turkey Hemorrhagic Enteritis Virus Isolate in Chickens.

Avian Dis 2018 Mar;62(1):6-13

A Animal Science, School of Environmental and Rural Science, University of New England, Armidale, New South Wales 2351, Australia.

A series of studies were undertaken to optimize the propagation of hemorrhagic enteritis virus (HEV) in specific-pathogen-free (SPF) chickens. A total of 562 SPF chickens were orally inoculated with an Australian avirulent HEV isolate of turkey origin at 9, 14, 21, or 28 days of age with 5, 6, 7, or 8 log  genomic copies (GC), while 102 chickens served as uninfected controls. No clinical signs were observed in infected chickens. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1637/11762-102317-Reg.1DOI Listing
March 2018
8 Reads

Genetic and Pathologic Characterization of a Novel Recombinant TC07-2-Type Avian Infectious Bronchitis Virus.

Avian Dis 2018 Mar;62(1):109-113

Avian Disease Research Division, Animal and Plant Quarantine Agency, Gimcheon, Republic of Korea 39660.

Avian infectious bronchitis viruses (IBVs) with the TC07-2 genotype have spread rapidly in East Asia since they were first reported in China in 2007. In 2015, an IBV with the TC07-2 genotype (designated KrD1515) was isolated from layer chickens with severe respiratory symptoms in Korea. In the present study, the full-length open reading frames of the spike (S) and nucleocapsid (N) genes of the virus were sequenced and analyzed. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1637/11764-103017-ResNote.1DOI Listing
March 2018
9 Reads

Comparative Evaluation of the Pathogenicity of Mycoplasma gallinaceum in Chickens.

Avian Dis 2018 Mar;62(1):50-56

A Poultry Section, Department of Production Animal Studies, Faculty of Veterinary Science, University of Pretoria, Onderstepoort, South Africa 0110.

Mycoplasma gallinaceum is not among the most pathogenic mycoplasmas affecting poultry, but its continuous re-isolation from flocks in South Africa displaying typical signs of mycoplasmosis prompted us to revisit its role in respiratory disease. Specific-pathogen-free white leghorn chickens were co-challenged with either M. gallinaceum (MGC) and QX-like infectious bronchitis virus (IBV), or the more virulent Mycoplasm gallisepticum (MG) and IBV. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1637/11743-081717-Reg.1DOI Listing
March 2018
8 Reads

Retrospective Study of Histomoniasis (Blackhead) in California Turkey Flocks, 2000-2014.

Avian Dis 2018 Mar;62(1):94-100

C California Animal Health and Food Safety Laboratory System, Tulare branch, University of California, Davis, 18830 Road 112 Tulare, CA 93274.

The flagellate parasite Histomonas meleagridis causes a severe disease in turkeys. Since nitarsone, the last antiflagellate feed additive, was withdrawn from the market, H. meleagridis has gained increasing clinical and economic importance, and frequently entire turkey flocks are lost to the disease. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1637/11772-112017-Reg.1DOI Listing
March 2018
6 Reads

Blood Glucose Concentrations in Nicarbazin-Fed Broiler Chickens.

Avian Dis 2018 Mar;62(1):114-116

B Department of Poultry Science, University of Georgia, Athens, GA 30602.

Four floor pen studies were carried out to evaluate the effects of nicarbazin (NIC) administration on blood glucose concentrations and the onset of hypoglycemia in broiler chickens. All tests involved continuous NIC feeding at 0, 100, or 125 ppm to 28 days of age. In each study, birds were reared at both standard environmental temperatures and at 3 C below this level. Read More

View Article

Download full-text PDF

Source
http://www.bioone.org/doi/10.1637/11789-122717-ResNote.1
Publisher Site
http://dx.doi.org/10.1637/11789-122717-ResNote.1DOI Listing
March 2018
10 Reads

Pancreatitis Is an Important Feature of Broilers Suffering from Inclusion Body Hepatitis Leading to Dysmetabolic Conditions with Consequences for Zootechnical Performance.

Avian Dis 2018 Mar;62(1):57-64

A Clinic for Poultry and Fish Medicine, Department for Farm Animals and Veterinary Public Health, University of Veterinary Medicine Vienna, Veterinaerplatz 1, 1210, Vienna, Austria.

The aim of the present study was to further unravel the pathophysiologic mechanisms of inclusion body hepatitis (IBH). In a first trial, the susceptibility of specific-pathogen-free (SPF) broilers to fowl aviadenovirus (FAdV) infections was investigated. Regardless of viral dose, route of infection, and susceptibility to disease on day 1, the 3-week-old SPF broilers showed resistance to IBH, with no mortality being recorded throughout the experiment. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1637/11755-092717-Reg.1DOI Listing
March 2018
7 Reads

Wildlife Presence and Interactions with Chickens on Australian Commercial Chicken Farms Assessed by Camera Traps.

Avian Dis 2018 Mar;62(1):65-72

A School of Veterinary Science, University of Sydney, Camden, New South Wales, 2570, Australia.

The types of wildlife and the frequency of their visits to commercial chicken farms in Australia were assessed using infrared and motion-sensing camera traps. Cameras were set up on 14 free-range layer farms, three cage layer farms, two barn layer farms, five non-free-range meat chicken farms, and six free-range meat chicken farms in the Sydney basin region and South East Queensland. Wildlife visits were found on every farm type and were most frequent on cage layer farms (73%), followed by free-range layer farms (15%). Read More

View Article

Download full-text PDF

Source
http://www.bioone.org/doi/10.1637/11761-101917-Reg.1
Publisher Site
http://dx.doi.org/10.1637/11761-101917-Reg.1DOI Listing
March 2018
10 Reads

Isolation and Characteristics of the Arkansas-Type Infectious Bronchitis Virus in China.

Avian Dis 2018 Mar;62(1):18-27

Division of Avian Infectious Diseases, State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin 150001, People's Republic of China.

Two infectious bronchitis virus (IBV) strains, designated as γCoV/ck/China/I0712/11 (I0712/11) and γCoV/ck/China/I0108/17 (I0108/17), were isolated from diseased chicken flocks in different provinces in China and genotyped as Arkansas (Ark)-type viruses with three other Chinese Ark field strains, the Jilin vaccine strain, and the American Ark- and Ark DPI-like viruses. Complete genomic sequence analysis and pairwise comparison of nucleotide sequences encoding the S1 subunit of the spike protein and other structural and accessory proteins revealed that Chinese Ark field isolates were genetically closely related to the Jilin vaccine and American ArkDPI11 strains, although extensive nucleotide changes were found across the genomes of Chinese Ark field isolates. This suggests that Chinese Ark-type isolates are derived from the Jilin vaccine, and have diverged and evolved independently by point mutations since introduction into China. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1637/11719-072517-Reg.1DOI Listing
March 2018
7 Reads

Evaluation of Cytology for Diagnosing Avian Pox in Wild Turkeys ( Meleagris gallopavo).

Avian Dis 2018 Mar;62(1):45-49

E Pennsylvania Game Commission, 2001 Elmerton Avenue, Harrisburg, PA 17110.

Avian pox virus is a common cause of proliferative skin disease in wild turkeys ( Meleagris gallopavo); however, other etiologies may produce grossly indistinguishable lesions. Common methods for diagnosing avian pox include histopathology, virus isolation, and PCR. While these methods are sufficient in most cases, each has their limitations. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1637/11760-101817-Reg.1DOI Listing
March 2018
7 Reads

Post mortem Survival of Gallibacterium anatis in a Laying Hen Experimental Infection Model.

Avian Dis 2018 Jun 3;62(2):195-200. Epub 2018 Apr 3.

A Department of Veterinary and Animal Sciences, Faculty of Health and Medical Science, University of Copenhagen, DK-1870 Frederiksberg C, Denmark.

To assess the survival of Gallibacterium anatis in dead laying hens, 21-wk-old laying hens were injected intraperitoneally with 0.5 ml brain hearth infusion broth containing 10 colony-forming units (CFU) of G. anatis 12656-12 liver ( n = 16), Escherichia coli ST141 ( n = 16), or a mix of G. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1637/11809-020818-Reg.1DOI Listing
June 2018
8 Reads

Increased Incidence of Enterococcal Infection in Nonviable Broiler Chicken Embryos in Western Canadian Hatcheries as Detected by Matrix-Assisted Laser Desorption/Ionization-Time-of-Flight Mass Spectrometry.

Avian Dis 2017 Dec;61(4):472-480

A Department of Veterinary Pathology, Western College of Veterinary Medicine, University of Saskatchewan, Saskatoon, Canada SK S7N 5B4.

The emergence of enterococcal infections in neonatal broiler chickens in the poultry industry has become common in many countries, including Canada. The objective of this study was to examine the bacterial infections in nonviable broiler chicken embryos in three western Canadian poultry hatcheries using matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOF MS). The pattern of embryo mortality that occurred during incubation and the breakout analysis results were similar in all three hatcheries. Read More

View Article

Download full-text PDF

Source
http://www.bioone.org/doi/10.1637/11678-052317-Reg.1
Publisher Site
http://dx.doi.org/10.1637/11678-052317-Reg.1DOI Listing
December 2017
25 Reads

Comparative Analysis of Pasteurella multocida Isolates from Acute and Chronic Fowl Cholera Cases in Hungary During the Period 2005 Through 2010.

Avian Dis 2017 Dec;61(4):457-465

A Institute for Veterinary Medical Research, Centre for Agricultural Research, Hungarian Academy of Sciences, H-1581 Budapest, P.O. Box 18, Hungary.

Fowl cholera (FC) is a highly contagious and economically important disease of poultry worldwide. This study was performed on 218 Pasteurella multocida isolates collected from separated breeding farms or backyards with acute and chronic FC cases in multiple localities across Hungary during the period 2005-2010. All isolates were characterized by a broad range of biochemical, serological, and molecular methods, as well as their antibiotic susceptibility to aminoglycosides (A), macrolides (M), penicillins (P), quinolones (Q), cephalosporins, sulphonamides (S), and tetracyclines (T) was determined. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1637/11674-051817-Reg.1DOI Listing
December 2017
9 Reads

Molecular Characterization of QX-Like and Variant Infectious Bronchitis Virus Strains in Malaysia Based on Partial Genomic Sequences Comprising the S-3a/3b-E-M-Intergenic Region-5a/5b-N Gene Order.

Avian Dis 2017 Dec;61(4):442-452

A Institute of Bioscience, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia.

Infectious bronchitis virus (IBV) is one of the major poultry pathogens of global importance. However, the prevalence of IBV strains in Malaysia is poorly characterized. The partial genomic sequences (6. Read More

View Article

Download full-text PDF

Source
http://www.bioone.org/doi/10.1637/11637-032817-Reg.1
Publisher Site
http://dx.doi.org/10.1637/11637-032817-Reg.1DOI Listing
December 2017
10 Reads

Fibrillar Collagen Organization Associated with Broiler Wooden Breast Fibrotic Myopathy.

Avian Dis 2017 Dec;61(4):481-490

Department of Animal Sciences, Ohio Agricultural Research and Development Center, The Ohio State University, Wooster, OH 44691.

Wooden breast (WB) is a fibrotic myopathy affecting the pectoralis major (p. major) muscle in fast-growing commercial broiler lines. Birds with WB are phenotypically detected by the palpation of a hard p. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1637/11738-080217-Reg.1DOI Listing
December 2017
10 Reads

Isolation of Avipoxvirus from Tongue of Canaries ( Serinus canaria) Show Severe Localized Proliferative Glossitis.

Avian Dis 2017 Dec;61(4):531-535

A Istituto Zooprofilattico Sperimentale di Padova, Viale dell'Università 10, Legnaro, PD, 35020, Italy.

Poxvirus was the causative agent of two unusual outbreaks of proliferative glossitis in canary ( Serinus canaria forma domestica) breeders in the Northern Italy. A total of 45, 7-9-mo-old canaries were submitted in fair postmortem conditions to the Istituto Zooprofilattico Sperimentale delle Venezie at the beginning of November 2005 for diagnostic investigation. Birds belonged to two unrelated and geographically distant aviaries in northern Italy, herein identified as Aviary A and Aviary B. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1637/11713-071417-Case.1DOI Listing
December 2017
13 Reads