268,005 results match your criteria Avian pathology : journal of the W.V.P.A[Journal]


Enhanced cytokine expression and upregulation of inflammatory signaling pathways in broiler chickens affected by wooden breast myopathy.

J Sci Food Agric 2020 Jul 5. Epub 2020 Jul 5.

College of Animal Science and Technology, Key Laboratory of Animal Origin Food Production and Safety Guarantee of Jiangsu Province, Jiangsu Collaborative Innovation Center of Meat Production and Processing, Quality and Safety Control, Joint International Research Laboratory of Animal Health and Food Safety, National Experimental Teaching Demonstration Center of Animal Science, Nanjing Agricultural University, Nanjing, 210095, P.R. China.

Background: Wooden breast (WB) myopathy in broiler chickens is a growing challenge for the poultry industry. Previous multi-omic data have implied that the pathogenesis of WB is associated with the activation of immune system and inflammatory response. However, the intricate mechanisms are not fully understood. Read More

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http://dx.doi.org/10.1002/jsfa.10641DOI Listing

Fecal pollution source characterization at non-point source impacted beaches under dry and wet weather conditions.

Water Res 2020 Jun 6;182:116014. Epub 2020 Jun 6.

Division of Environmental and Occupational Health Sciences, School of Public Health, University of Illinois at Chicago, Chicago, IL, USA; Institute for Environmental Science and Policy, University of Illinois at Chicago, Chicago, IL, USA.

Though Lake Michigan beaches in Chicago are not impacted by stormwater or wastewater outfalls, several of those beaches often exceed USEPA Beach Action Values (BAVs). We investigated the role of microbial source tracking (MST) as a complement to routine beach monitoring at Chicago beaches. In summer 2016, water samples from nine Chicago beaches were analyzed for E. Read More

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http://dx.doi.org/10.1016/j.watres.2020.116014DOI Listing

A bioinformatic approach to identify core genome difference between Salmonella Pullorum and Salmonella Enteritidis.

Infect Genet Evol 2020 Jul 1:104446. Epub 2020 Jul 1.

Key Laboratory of Prevention and Control of Biological Hazard Factors (Animal Origin) for Agri-food Safety and Quality, Ministry of Agriculture of China, Yangzhou University, China; Jiangsu Key Lab of Zoonosis/Jiangsu Co-Innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou University, China; Joint International Research Laboratory of Agriculture and Agri-Product Safety, Yangzhou University, China. Electronic address:

S. Pullorum and S. Enteritidis are closely related in genetic terms, but they show very different pathogenicity and host range. Read More

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http://dx.doi.org/10.1016/j.meegid.2020.104446DOI Listing

Emerging infectious bronchitis virus (IBV) in Egypt: Evidence for an evolutionary advantage of a new S1 variant with a unique gene 3ab constellation.

Infect Genet Evol 2020 Jul 1:104433. Epub 2020 Jul 1.

Institute of Diagnostic Virology Institute of Diagnostic Virology, Friedrich-Loeffler-Institut, Germany. Electronic address:

Infectious bronchitis virus (IBV), a gamma-coronavirus, causes infectious bronchitis (IB), a major respiratory disease of chicken. Its high mutation rate in conjunction with recombination of the RNA genome constantly creates IBV variants that are difficult to control by currently available vaccines. In this study, we addressed the question whether small-scale holdings might harbor IBV variants that serve as a reservoir for newly emerging variants. Read More

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http://dx.doi.org/10.1016/j.meegid.2020.104433DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7327463PMC

MicroRNA expression profile in extracellular vesicles derived from ALV-J infected chicken semen.

Virus Res 2020 Jul 1:198083. Epub 2020 Jul 1.

College of Animal Science, South China Agricultural University & Guangdong Provincial Key Laboratory of Agro-Animal Genomics and Molecular Breeding & Key Laboratory of Chicken Genetics, Breeding and Reproduction, Ministry of Agriculture, Guangzhou, 510642, PR China; Key Laboratory of Animal Health Aquaculture and Environmental Control, Guangzhou 510642, PR China; South China Collaborative Innovation Center for Poultry Disease Control and Product Safety, Guangzhou 510640, PR China. Electronic address:

MicroRNAs(miRNAs) have been reported to regulate gene expression in many processes. MiRNA in extracellular vesicles (EVs) also have been widely investigated, while there is no studies of miRNAs in seminal EVs. Subgroup J of Avian leukosis virus (ALV-J) can be transmitted vertically, but the mechanism of it is not clear enough. Read More

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http://dx.doi.org/10.1016/j.virusres.2020.198083DOI Listing

Comparison of the Immunogenicity of Four Infectious Bursal Disease Intermediate Vaccines in Commercial Broiler Flocks in Iran: A Field Trial Study.

Arch Razi Inst 2020 Jun 1;75(2):205-212. Epub 2020 Jun 1.

Department of Clinical Sciences, Faculty of Veterinary Medicine, Ferdowsi University of Mashhad, Mashhad, Iran.

Infectious bursal disease (IBD) is a highly contagious disease in young chickens worldwide. The major strategy for the prevention and control of IBD virus (IBDV) is vaccination. Therefore, the present study aimed to compare the immunogenicity of four commercially available IBD vaccines on broilers (Ross 308) that were raised in areas with very virulent IBDV infection history. Read More

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http://dx.doi.org/10.22092/ari.2019.124890.1292DOI Listing

Investigation of Avian Influenza Viruses (H9N2-H5nx) in Pigeons during Highly Pathogenic Avian Influenza Outbreaks in Iran, in 2016.

Arch Razi Inst 2020 Jun 1;75(2):197-203. Epub 2020 Jun 1.

Department of Poultry Diseases Research, Razi Vaccine and Serum Research Institute, Agricultural Research, Education and Extension Organization (AREEO), Karaj, Iran.

Avian influenza (AI) virus (H9N2 and H5 subtypes) infections in birds cause major concerns around the world. The majority of the avian species, such as domestic, pet, and wild birds, are natural and experimental hosts of avian influenza viruses. There are global concerns about members of the Columbidae family, namely pigeons or doves, for their role as the potential interspecies bridge in influenza A viruses ecology. Read More

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http://dx.doi.org/10.22092/ari.2019.123439.1250DOI Listing

A Study on Isolation and Molecular Identification of Bordetella avium from Iranian Commercial and Backyard Broiler Turkeys within 2016-2018.

Arch Razi Inst 2020 Jun 1;75(2):179-186. Epub 2020 Jun 1.

Department of Medical Microbiology, Adnan Menderes University, Aydin, Turkey.

Bordetellosis or turkey coryza, caused by Bordetella avium, has been an issue for turkey industry since its first description in 1967 when it was reported for the first time. Bordetella avium causes a highly contagious upper respiratory disease in turkeys. Therefore, this study aimed to isolate and characterize this species from commercial and backyard turkeys in Tehran, Isfahan, and Northern provinces of Iran. Read More

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http://dx.doi.org/10.22092/ari.2019.124680.1285DOI Listing

Molecular Monitoring of D1466 Genotype of Avian Infectious Bronchitis Virus in Iran: A Retrospective Study in 2013-2017.

Arch Razi Inst 2020 Jun 1;75(2):163-168. Epub 2020 Jun 1.

Iranian Veterinary Organization, Tehran, Iran.

Infectious bronchitis is one of the most common diseases in the poultry industry in many countries, especially in the regions with a dense poultry farming industry. Gammacoronavirus is the etiologic agent of this disease, with the chickens and poultries as the natural reservoirs of the virus. Various strains of infectious bronchitis virus have been reported in poultry around the world. Read More

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http://dx.doi.org/10.22092/ari.2018.121512.1214DOI Listing

Molecular Detection of Avian Infectious Bronchitis Viruses in Live Bird Markets, Gilan Province.

Arch Razi Inst 2020 Jun 1;75(2):155-162. Epub 2020 Jun 1.

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

Coronaviruses (AvCoV) which include infectious bronchitis virus (IBV) and other bird coronaviruses belong to the genus gammacoronavirus, subfamily Coronavirinae. One of the most prominent representatives of gammacoronavirus genus is infectious bronchitis virus (IBV) which is a highly contagious viral pathogen of chickens causing considerable economic losses to the poultry industry. IBVs mostly affect the respiratory, urinary, and reproductive tracts leading to a substantial drop in production. Read More

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http://dx.doi.org/10.22092/ari.2018.122702.1226DOI Listing

Seeing red? Colour biases of foraging birds are context dependent.

Anim Cogn 2020 Jul 3. Epub 2020 Jul 3.

Department of Zoology, University of Cambridge, Cambridge, UK.

Colours are commonly used as visual cues when measuring animals' cognitive abilities. However, animals can have innate biases towards certain colours that depend on ecological and evolutionary contexts, therefore potentially influencing their performance in experiments. For example, when foraging, the colour red can advertise profitable fruits or act as a warning signal about chemically defended prey, and an individual's propensity to take food of that colour may depend on experience, age or physical condition. Read More

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http://dx.doi.org/10.1007/s10071-020-01407-xDOI Listing

Epigenomics and genotype-phenotype association analyses reveal conserved genetic architecture of complex traits in cattle and human.

BMC Biol 2020 Jul 3;18(1):80. Epub 2020 Jul 3.

Animal Genomics and Improvement Laboratory, Agricultural Research Service, USDA, BARC-East, Beltsville, MD, 20705, USA.

Background: Lack of comprehensive functional annotations across a wide range of tissues and cell types severely hinders the biological interpretations of phenotypic variation, adaptive evolution, and domestication in livestock. Here we used a combination of comparative epigenomics, genome-wide association study (GWAS), and selection signature analysis, to shed light on potential adaptive evolution in cattle.

Results: We cross-mapped 8 histone marks of 1300 samples from human to cattle, covering 178 unique tissues/cell types. Read More

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http://dx.doi.org/10.1186/s12915-020-00792-6DOI Listing

Continent-wide Shifts in Song Dialects of White-Throated Sparrows.

Curr Biol 2020 Jun 30. Epub 2020 Jun 30.

Department of Biology, Wilfrid Laurier University, Waterloo, ON N2L 3C5, Canada.

Hypotheses on regional song variation ("dialects") assume that dialects remain stable within regions, are distinct between regions, and persist within populations over extensive periods [1-3]. Theories to explain dialects focus on mechanisms that promote persistence of regional song variants despite gene flow between regions [4-6], such as juveniles settling in non-natal populations retaining only those songs from their repertoires that match neighbors [7, 8]. It would be considered atypical for a novel song variant to invade and replace the established regional variant. Read More

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http://dx.doi.org/10.1016/j.cub.2020.05.084DOI Listing

Diversity of influenza A viruses retrieved from respiratory disease outbreaks and subclinically infected herds in Spain (2017-2019).

Transbound Emerg Dis 2020 Jul 3. Epub 2020 Jul 3.

Dept. Sanitat i Anatomia Animals, Universitat Autònoma de Barcelona, Facultat de Veterinària, Travessera dels Turons s/n, campus UAB, 08193, Cerdanyola del Vallès, Spain.

The present study was aimed to assess the diversity of influenza A viruses (IAV) circulating in pig farms in the Iberian Peninsula. The study included two different situations: farms suffering respiratory disease outbreaks compatible with IAV (n= 211) and randomly selected farms without overt respiratory disease (n=19). Initially, presence of IAV and lineage determination were assessed by qRT-PCR using nasal swabs. Read More

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http://dx.doi.org/10.1111/tbed.13709DOI Listing

Pathogenicity of clade 2.3.2.1 H5N1 highly pathogenic avian influenza virus in American kestrel ().

Avian Pathol 2020 Jul 3:1-14. Epub 2020 Jul 3.

Birds of prey, including endangered species, have been infected with H5 highly pathogenic avian influenza viruses (HPAIVs) in several countries. In this present study, we assessed the pathogenicity of the clade 2.3. Read More

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http://dx.doi.org/10.1080/03079457.2020.1787337DOI Listing

Efficacy of experimental phage therapies in livestock.

Anim Health Res Rev 2020 Jun 19:1-15. Epub 2020 Jun 19.

Sub-Department of Veterinary Prevention and Avian Diseases, Institute of Biological Basis of Animal Diseases, Faculty of Veterinary Medicine, University of Life Sciences, Akademicka 12, 20-033 Lublin, Poland.

Bacteriophages are the most abundant form of life on earth and are present everywhere. The total number of bacteriophages has been estimated to be 1032 virions. The main division of bacteriophages is based on the type of nucleic acid (DNA or RNA) and on the structure of the capsid. Read More

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http://dx.doi.org/10.1017/S1466252319000161DOI Listing

Novel HCV-Like Virus Detected in Avian Livers in Southern China and Its Implications for Natural Recombination Events.

Virol Sin 2020 Jul 2. Epub 2020 Jul 2.

College of Veterinary Medicine, South China Agricultural University, Guangzhou, 510642, China.

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http://dx.doi.org/10.1007/s12250-020-00256-9DOI Listing

Females as the gatekeepers to seasonal breeding: what we can learn by studying reproductive mechanisms in both sexes.

Integr Comp Biol 2020 Jul 3. Epub 2020 Jul 3.

Texas A&M University; 3258 TAMU College Station, TX 77843.

Seasonal reproduction is a widespread adaptation in vertebrates, such that individuals time their reproductive efforts to match peak resource abundance. Individuals rely on environmental cues to regulate hormonal mechanisms governing timing of breeding. Historically, studies on physiological mechanisms of seasonal reproduction, specifically in birds, have disproportionately focused on males compared to females. Read More

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http://dx.doi.org/10.1093/icb/icaa095DOI Listing

Protozoal encephalitis associated with and during an epizootic involving Brandt's cormorants () in coastal Southern California, USA.

Int J Parasitol Parasites Wildl 2020 Aug 13;12:185-191. Epub 2020 Jun 13.

California Animal Health and Food Safety Laboratory, University of California, Davis, 620 West Health Sciences Dr., Davis, CA, 95616, USA.

Between March and May 2019, wildlife rehabilitation centers along coastal southern California admitted increased numbers of Brandt's cormorants () with neurological disease including head tilt, nystagmus, torticollis, tremors, paresis, paralysis, and ataxia. Seven cormorants from Los Angeles County and one cormorant from Orange County were submitted for postmortem examination. Gross findings included thin to fair body condition, generalized congestion/hyperemia, nematode parasites in the ventriculus, and diarrhea in the seven birds from Los Angeles County while the one bird from Orange County had icterus. Read More

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http://dx.doi.org/10.1016/j.ijppaw.2020.06.005DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7322481PMC

Identification and characterisation of endogenous Avian Leukosis Virus subgroup E (ALVE) insertions in chicken whole genome sequencing data.

Mob DNA 2020 30;11:22. Epub 2020 Jun 30.

The Roslin Institute and Royal (Dick) School of Veterinary Studies, The University of Edinburgh, Easter Bush, Midlothian, EH25 9RG UK.

Background: Endogenous retroviruses (ERVs) are the remnants of retroviral infections which can elicit prolonged genomic and immunological stress on their host organism. In chickens, endogenous Avian Leukosis Virus subgroup E (ALVE) expression has been associated with reductions in muscle growth rate and egg production, as well as providing the potential for novel recombinant viruses. However, ALVEs can remain in commercial stock due to their incomplete identification and association with desirable traits, such as ALVE21 and slow feathering. Read More

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http://dx.doi.org/10.1186/s13100-020-00216-wDOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7325683PMC

Consistent habitat preference underpins the geographically divergent autumn migration of individual Mongolian common shelducks.

Curr Zool 2020 Aug 13;66(4):355-362. Epub 2019 Nov 13.

Department of Bioscience, Aarhus University, Kalø, Rønde, 8410, Denmark.

While many avian populations follow narrow, well-defined "migratory corridors," individuals from other populations undertake highly divergent individual migration routes, using widely dispersed stopover sites en route between breeding and wintering areas, although the reasons for these differences are rarely investigated. We combined individual GPS-tracked migration data from Mongolian-breeding common shelduck and remote sensing datasets, to investigate habitat selection at inland stopover sites used by these birds during dispersed autumn migration, to explain their divergent migration patterns. We used generalized linear mixed models to investigate population-level resource selection, and generalized linear models to investigate stopover-site-level resource selection. Read More

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http://dx.doi.org/10.1093/cz/zoz056DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7319440PMC

Effects of functional oils on the growth, carcass and meat characteristics, and intestinal morphology of commercial turkey toms.

Poult Sci 2020 Jul 27;99(7):3752-3760. Epub 2020 Apr 27.

Oligo Basics USA LLC, Cary, NC 27519, USA.

Two experiments were conducted to evaluate the effects of functional oils containing cashew nutshell and castor oil on turkey performance and intestinal morphology. In experiment 1, 585 hatchlings were randomly placed in 15 replicate floor pens, (13 poults/pen) with recycled litter and provided feed and water ad libitum. Birds were randomly assigned to 3 dietary treatments from 1 to 12 wk: nonmedicated control, 0. Read More

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http://dx.doi.org/10.1016/j.psj.2020.03.050DOI Listing

Evaluation of growth production factors as predictors of the incidence and severity of white striping and woody breast in broiler chickens.

Poult Sci 2020 Jul 15;99(7):3723-3732. Epub 2020 Apr 15.

Department of Poultry Science, Texas A&M University, College Station, TX 77843, USA.

White striping (WS) and woody breast (WB) have been previously associated with older and heavier birds. However, there is limited information supporting the association between these 2 muscle conditions and growth parameters. The objectives of this study were 1) to investigate the relationship between WS and WB using different growth production factors and 2) to propose a predictive model that uses growth production factors to investigate the incidence and severity of WS and WB. Read More

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http://dx.doi.org/10.1016/j.psj.2020.03.026DOI Listing

Targeted differential monochromatic lighting improves broiler breeder reproductive performance.

Poult Sci 2020 Jul 30;99(7):3697-3708. Epub 2020 Apr 30.

Department of Animal Sciences, Robert H. Smith Faculty of Agriculture, Food and Environment, Hebrew University of Jerusalem, Rehovot, Israel.

Light perception in birds is composed of the retina and extraretinal sites, located in the brain. Previous studies indicate that selective photostimulation of the eye decreased reproductive performance, whereas extraretinal photostimulation increases it. Differential photostimulation of the retina and extraretinal sites is based on the retina's sensitivity to green wavelengths and on the red wavelengths' ability to penetrate body tissues. Read More

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http://dx.doi.org/10.1016/j.psj.2020.03.007DOI Listing

Role of LsrR in the regulation of antibiotic sensitivity in avian pathogenic Escherichia coli.

Poult Sci 2020 Jul 24;99(7):3675-3687. Epub 2020 Apr 24.

School of Life Sciences, Anhui Agricultural University, Hefei, Anhui 230036, China. Electronic address:

Avian pathogenic Escherichia coli (APEC) is a specific group of extraintestinal pathogenic E. coli that causes a variety of extraintestinal diseases in chickens, ducks, pigeons, turkeys, and other avian species. These diseases lead to significant economic losses in the poultry industry worldwide. Read More

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http://dx.doi.org/10.1016/j.psj.2020.03.064DOI Listing

Dietary supplementation with vitamin C ameliorates the adverse effects of Salmonella Enteritidis-challenge in broilers by shaping intestinal microbiota.

Poult Sci 2020 Jul 24;99(7):3663-3674. Epub 2020 Apr 24.

State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, Beijing, 100193, People's Republic of China. Electronic address:

Salmonella Enteritidis (SE) infection is not only a leading cause of poor production performance and compromised animal welfare in broilers but also a potential threat to public health. Two experiments were conducted to evaluate the effects of dietary supplemental vitamin C (VC) on SE challenged-broilers. In experiment 1, one hundred eighty 1-day-old Arbor Acre broilers were randomly allocated into 3 treatments, with 0, 500, or 1,000 mg/kg VC included in the diet. Read More

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http://dx.doi.org/10.1016/j.psj.2020.03.062DOI Listing

Effect of dietary Lactobacilli mixture on Listeria monocytogenes infection and virulence property in broilers.

Poult Sci 2020 Jul 24;99(7):3655-3662. Epub 2020 Apr 24.

Department of Animal Production, Henan University of Science and Technology, Luoyang 471023, China; National Engineering Research Center of Biological Feed, Beijing 100008, China. Electronic address:

The present study aimed to investigate the effect of probiotic Lactobacilli addition on Listeria monocytogenes load, inflammatory reaction, and virulence properties in broilers from 1 to 14 D of age. A total of 480 broiler chicks were randomly allocated to 4 treatments of 6 replicates each. All birds were infected with L. Read More

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http://dx.doi.org/10.1016/j.psj.2020.03.058DOI Listing

Molecular characteristics of fluoroquinolone-resistant avian pathogenic Escherichia coli isolated from broiler chickens.

Poult Sci 2020 Jul 15;99(7):3628-3636. Epub 2020 Apr 15.

College of Veterinary Medicine & Zoonoses Research Institute, Kyungpook National University, Buk-gu, Daegu, 41566, Republic of Korea. Electronic address:

Avian pathogenic Escherichia coli (APEC) is a major pathogen in the poultry industry worldwide including Korea. In this study, the phenotypic and genotypic characteristics of 33 fluoroquinolone (FQ)-resistant APEC isolates from broilers were analyzed. All FQ-resistant APEC isolates showed amino acid exchanges at both gyrA and parC and high minimal inhibitory concentrations for FQs. Read More

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http://dx.doi.org/10.1016/j.psj.2020.03.029DOI Listing

Interactive effect of dietary calcium and phytase on broilers challenged with subclinical necrotic enteritis: 3. Serum calcium and phosphorus, and bone mineralization.

Poult Sci 2020 Jul 26;99(7):3617-3627. Epub 2020 Apr 26.

School of Environmental and Rural Science, University of New England, Armidale, NSW 2351, Australia. Electronic address:

Calcium is chelated by phytic acid and forms phytate-mineral complexes reducing Ca availability and the ability of phytase to hydrolyze phytate. An increased Ca concentration in the gut favors the activity of Clostridium perfringens (C. perfringens). Read More

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http://dx.doi.org/10.1016/j.psj.2020.04.012DOI Listing

Laetiporus sulphureus-fermented wheat bran enhanced the broiler growth performance by improving the intestinal microflora and inflammation status.

Authors:
W C Lin T T Lee

Poult Sci 2020 Jul 30;99(7):3606-3616. Epub 2020 Apr 30.

Department of Animal Science, National Chung Hsing University, Taichung 402, Taiwan; The iEGG and Animal Biotechnology Center, National Chung Hsing University, Taichung 402, Taiwan. Electronic address:

This study investigates the effects of Laetiporus sulphureus-fermented wheat bran (LS) as a feed supplementation on the immunomodulative properties in broiler chickens. Crude phenolic compounds, crude polysaccharides, crude triterpenoids, and ergosterol were determined in LS water extracts. In animal experiments, 400 male broilers (Ross 308) were randomly assigned into 5 groups fed with a corn-soybean-based diet (control) and a control diet replaced with 5% wheat bran (WB), 10% WB, 5% LS, and 10% LS, respectively. Read More

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http://dx.doi.org/10.1016/j.psj.2020.04.011DOI Listing

Effects of dietary vitamins supplementation level on the production performance and intestinal microbiota of aged laying hens.

Poult Sci 2020 Jul 26;99(7):3594-3605. Epub 2020 Apr 26.

State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, Beijing, 100193, People's Republic of China. Electronic address:

The objective of this study was to investigate the effects of higher vitamins supplementation level on the performance, immunity, and intestinal microbiota of old laying hens. Twelve birds were randomly chosen from 312 healthy, 65-wk-old Hy-Line Brown layers for sampling after a 7-wk acclimation period. The remaining 300 hens were randomly allocated to 1 of 4 dietary treatments for a 13-wk feeding trial: basal diet (CON), basal diet with 2-fold supplementation level of lipid-soluble vitamins (LV), 2-fold supplementation level of water-soluble vitamins (WV), or 2-fold supplementation level of both lipid-soluble and water-soluble vitamins (BV), respectively. Read More

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http://dx.doi.org/10.1016/j.psj.2020.04.007DOI Listing

Influence of coccidiosis vaccination on nutrient utilization of corn, soybean meal, and distillers dried grains with solubles in broilers.

Poult Sci 2020 Jul 11;99(7):3540-3549. Epub 2020 Apr 11.

Department of Poultry Science, University of Arkansas, Fayetteville, AR. Electronic address:

Two experiments were conducted to determine the impact of coccidiosis vaccination on the apparent ileal digestibility (AID) of nutrients and ileal digestible energy (IDE) in commonly used feed ingredients in broilers. Eight experimental treatments based on a factorial arrangement of coccidiosis vaccination (control with in-feed diclazuril [CTL] or vaccinated [VAC]) and 4 different diets were administered to male Cobb 500 broilers in floor pens containing 12 birds per pen. For the vaccinated group, a 3× dose of a live coccidiosis vaccine was given via oral gavage on the day of hatch. Read More

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http://dx.doi.org/10.1016/j.psj.2020.03.035DOI Listing

Soybean oligosaccharide, stachyose, and raffinose in broilers diets: effects on odor compound concentration and microbiota in cecal digesta.

Poult Sci 2020 Jul 15;99(7):3532-3539. Epub 2020 Apr 15.

College of Animal Science and Veterinary Medicine, Shenyang Agricultural University, Shenyang 110866, China. Electronic address:

Soybean oligosaccharides have been previously shown to be associated with the production of major odor-causing compounds in broilers, although little is known about the role of stachyose and raffinose, which are key components of soybean oligosaccharide, in broiler cecal microbiota and odor compound production. To this end, soybean oligosaccharide, stachyose, and raffinose were added to the birds' diets to investigate their effects on odor compound production and the microbial community characteristics of the cecum in broilers. A total of 300 one-day-old Arbor Acre broilers with similar initial live weight were randomly allocated into 5 dietary groups with 6 replicates of 10 birds. Read More

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http://dx.doi.org/10.1016/j.psj.2020.03.034DOI Listing

The adaptability of Hy-Line Brown laying hens to low-phosphorus diets supplemented with phytase.

Poult Sci 2020 Jul 15;99(7):3525-3531. Epub 2020 Apr 15.

College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi 712100, China. Electronic address:

Body phosphorus homeostasis network allows laying hens to adapt to wide range of changes in dietary phosphorus levels. Phytase hydrolyzes phytate rendering phosphorus and reduces the laying hens' requirements for inorganic phosphate rock. Here, we demonstrate that there is no need to keep large safety margins in dietary phosphorus when hens are fed with phytase. Read More

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http://dx.doi.org/10.1016/j.psj.2020.03.033DOI Listing

Light emitting diode (LED) color and broiler growth: effect of supplementing blue/green LED to white LED light on broiler growth, stress, and welfare.

Poult Sci 2020 Jul 4;99(7):3519-3524. Epub 2020 May 4.

Department of Poultry Science, Texas A&M University, College Station, USA. Electronic address:

Light emitting diode (LED) lighting provides an affordable lighting option for use in commercial poultry production. However, more information is needed to understand the effects of LED color on broiler welfare and growth. Five consecutive flocks (1 in summer, 1 in fall, 2 in winter, and 1 in spring) of straight run Ross 708 × Ross 708 broilers were reared in commercial type barns for 45 D. Read More

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http://dx.doi.org/10.1016/j.psj.2020.04.020DOI Listing

Effects of different mating strategies in broiler breeder during peak and postpeak phase on subsequent broiler performance.

Poult Sci 2020 Jul 17;99(7):3501-3510. Epub 2020 Apr 17.

Department of Theriogenology, Faculty of Veterinary Science, University of Veterinary and Animal Sciences, Lahore, Pakistan.

Two experimental trials on commercial broiler (Ross-308) were conducted to evaluate the carryover effect of artificial insemination (AI) in parent flock (PF) kept in cages (C), and on floor (F) in comparison to natural mating (NM) in floored PF. A total of 900 broiler chicks were obtained from 38-week-old PF (peak production), representing C, F, and NM evenly during first trial, whereas in second trial, similar number of chicks were obtained from same PF during postpeak phase (55 wk of age). Subsequent effects of AI and NM in PF were evaluated by bacteriology, posthatch mortality, growth performance, immune response, and carcass traits on experimental birds (broiler). Read More

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http://dx.doi.org/10.1016/j.psj.2020.03.038DOI Listing

Research Note: Comparison of chicken blood chemistry and electrolyte parameters between the portable i-STAT1 clinical analyzer and VetScan VS2 serum biochemistry panel using Hy-Line commercial white-egg laying hens.

Poult Sci 2020 Jul 15;99(7):3487-3490. Epub 2020 May 15.

Department of Veterinary Diagnostic and Production Animal Medicine, Iowa State University College of Veterinary Medicine, Ames, IA 50010. Electronic address:

The i-STAT1 clinical analyzer has become an increasingly popular tool in clinical production animal medicine as it can provide pen-side results in a cost effective and timely manner when compared to standard benchtop serum biochemistry blood gas and chemistry analyses. This study compares the results of the portable Abbott i-STAT1 analyzer and the Abaxis VetScan VS2 for glucose (Glu, mg/dL), ionized Ca (mmol/L), Na (mmol/L), and K (mmol/L) values. Three genetically distinct commercial varieties (CV) of Hy-Line white-egg laying hens are used in this study (Hy-Line W-36, Hy-Line W-80, and Hy-Line W-80+). Read More

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http://dx.doi.org/10.1016/j.psj.2020.03.059DOI Listing

Full-length cDNA sequence analysis of 85 avian leukosis virus subgroup J strains isolated from chickens in China during the years 1988-2018: coexistence of 2 extremely different clusters that are highly dependent upon either the host genetic background or the geographic location.

Poult Sci 2020 Jul 6;99(7):3469-3480. Epub 2020 May 6.

Institute for Poultry Science and Health, Guangxi University, Nanning 530004, China. Electronic address:

During the process of transmission and spread of avian leukosis virus subgroup J (ALV-J) in chickens worldwide, the viral genome is constantly changing. A comprehensive and systematic study of the evolutionary process of ALV-J in China is needed. In this study, we amplified the full-length viral cDNA sequences of 16 ALV-J isolates of Yellow-chicken origin and analyzed and compared these sequences with another 69 ALV-J strains isolated during the years 1988-2018. Read More

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http://dx.doi.org/10.1016/j.psj.2020.04.023DOI Listing

Biochemical reference intervals for homing pigeons in China.

Poult Sci 2020 Jul 6;99(7):3463-3468. Epub 2020 May 6.

Department of Veterinary Medicine, College of Animal Sciences, Zhejiang University, Hangzhou 310058, Zhejiang, China; Zhejiang Provincial Key Laboratory of Preventive Veterinary Medicine, Zhejiang University, Hangzhou 310058, Zhejiang, China. Electronic address:

As indicators of diseases, blood biochemical values play a crucial role in clinical practice and assessments of animals' health condition. The rising population of homing pigeons in China has prompted needs for reliable blood biochemical reference intervals. Therefore, the aim of this study was to establish biochemical reference intervals for homing pigeons. Read More

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http://dx.doi.org/10.1016/j.psj.2020.04.022DOI Listing

A microencapsulated feed additive containing organic acids, thymol, and vanillin increases in vitro functional activity of peripheral blood leukocytes from broiler chicks.

Poult Sci 2020 Jul 15;99(7):3428-3436. Epub 2020 Apr 15.

Vetagro S.p.A., 42124, Reggio Emilia, Italy; DIMEVET, University of Bologna, Ozzano Emilia, Italy.

During the first week after hatch, young chicks are vulnerable to pathogens as the immune system is not fully developed. The objectives of this study were to determine if supplementing the starter diet with a microencapsulated feed additive containing citric and sorbic acids, thymol, and vanillin affects in vitro functional activity of peripheral blood leukocytes (PBLs). Day-old chicks (n = 800) were assigned to either a control diet (0 g/metric ton [MT]) or a diet supplemented with 500 g/MT of the microencapsulated additive. Read More

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http://dx.doi.org/10.1016/j.psj.2020.03.031DOI Listing

Dietary genistein supplementation protects against lipopolysaccharide-induced intestinal injury through altering transcriptomic profile.

Poult Sci 2020 Jul 15;99(7):3411-3427. Epub 2020 Apr 15.

College of Animal Science and Technology, Nanjing Agricultural University, Nanjing 210095, China. Electronic address:

Genistein is abundant in the corn-soybean meal feed. Little information is available about the effect of dietary genistein on the intestinal transcriptome of chicks, especially when suffering from intestinal injury. In this study, 180 one-day-old male ROSS 308 broiler chickens were randomly allocated to 3 groups, with 4 replicates (cages) of 15 birds each. Read More

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http://dx.doi.org/10.1016/j.psj.2020.03.020DOI Listing

Establishment of reverse transcription recombinase-aided amplification-lateral-flow dipstick and real-time fluorescence-based reverse transcription recombinase-aided amplification methods for detection of the Newcastle disease virus in chickens.

Poult Sci 2020 Jul 15;99(7):3393-3401. Epub 2020 Apr 15.

College of Veterinary Medicine, Hebei Agricultural University, Baoding 071001, China. Electronic address:

Newcastle disease is an acute and highly contagious disease of poultry caused by Newcastle disease virus infection, which does great harm to the poultry industry all over the world. To diagnose the disease simply and quickly, 2 detection methods were established based on reverse transcription recombinase-aided amplification (RT-RAA) technology. One is reverse transcription recombinase-aided amplification-lateral flow dipstick (RT-RAA-LFD) that is to combine RT-RAA with lateral flow dipstick; the other is real-time fluorescence-based reverse transcription recombinase-aided amplification (RF-RT-RAA) that is the combination of RT-RAA and exo probe. Read More

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http://dx.doi.org/10.1016/j.psj.2020.03.018DOI Listing

Effect of antibiotic treatment on microbial composition and expression of antimicrobial peptides and cytokines in the chick cecum.

Poult Sci 2020 Jul 15;99(7):3385-3392. Epub 2020 Apr 15.

Graduate School of Integrated Sciences for Life, Hiroshima University, Higashi-Hiroshima 739-8528, Japan; Research Center for Animal Science, Hiroshima University, Higashi-Hiroshima 739-8528, Japan. Electronic address:

The aim of this study was to confirm whether the expression of innate immune molecules in the chick cecum is altered in association with changes in the composition of the intestinal microbiome that are regulated by treatment with antibiotics. Broiler chicks were administered with antibiotics (penicillin and streptomycin) daily, and the composition of the microbiota, expression of innate immune molecules, and localization of antimicrobial peptides in the chick cecum were examined at day 7 and day 14 using real-time PCR and immunohistochemistry. The oral administration of antibiotics caused an increase in the relative frequency of the Enterobacteriaceae family and a decrease in some gram-negative (Barnesiellaceae) and gram-positive bacterial (Clostridiaceae and Erysipelotrichaceae) families. Read More

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http://dx.doi.org/10.1016/j.psj.2020.03.016DOI Listing

Screening and mechanistic study of key sites of the hemagglutinin-neuraminidase protein related to the virulence of Newcastle disease virus.

Poult Sci 2020 Jul 4;99(7):3374-3384. Epub 2020 May 4.

College of Veterinary Medicine, Northwest A&F University, Yangling 712100, Shaanxi Province, China. Electronic address:

Newcastle disease is a kind of avian infectious disease caused by Newcastle disease virus (NDV). The virulence of NDV is dependent mainly on the fusion (F) protein and hemagglutinin-neuraminidase (HN) protein. The genomes of 2 viruses, NDV-Blackbird and NDV-Dove, are 99. Read More

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http://dx.doi.org/10.1016/j.psj.2020.04.014DOI Listing

The effects of 2 genetic lines on spatial distribution and use and preference of perch and nest area in an aviary system.

Poult Sci 2020 Jul 26;99(7):3328-3333. Epub 2020 Apr 26.

University of Nebraska, Department of Statistics, Lincoln, NE 68583.

The objective of this trial was to evaluate spatial distribution, nest and perch usage, and preference of Lohmann Brown (BH) and Bovan White (WH) Leghorn hens raised in an aviary system. At 5 wk, 400 floor raised pullets, BH and WH strains, in equal numbers, were placed into 8 modified Big Dutchman Natura aviary units. Each aviary unit had 3 tiers with perches and an indoor litter area. Read More

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http://dx.doi.org/10.1016/j.psj.2020.03.056DOI Listing

Effects of supplementing yeast fermentate in the feed or drinking water on stress susceptibility, plasma chemistry, cytokine levels, antioxidant status, and stress- and immune-related gene expression of broiler chickens.

Poult Sci 2020 Jul 18;99(7):3312-3318. Epub 2020 Apr 18.

Department of Poultry Science, Texas A&M University, College Station, TX, USA 77843. Electronic address:

This study aimed to elucidate the mechanism by which adding Saccharomyces cerevisiae-derived yeast fermentate to the feed (XPC) or drinking water reduces stress in poultry. Day-old male Cobb 500 broiler chicks were assigned to 1 of 3 treatments: stressed control (CS), stressed + XPC (1.25 kg/metric ton feed, day 0-43; XPC), or stressed + AviCare (160 mL/100 L drinking water, day 0-43; AVI). Read More

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http://dx.doi.org/10.1016/j.psj.2020.03.037DOI Listing

Broiler stress responses to light intensity, flooring type, and leg weakness as assessed by heterophil-to-lymphocyte ratios, serum corticosterone, infrared thermography, and latency to lie.

Poult Sci 2020 Jul 15;99(7):3301-3311. Epub 2020 Apr 15.

Department of Poultry Science, University of Arkansas, Fayetteville, AR 72701, USA.

Stress and leg weakness are detrimental to broiler production, health, and welfare. Traditional methods to evaluate stress may be stressful to the bird because they are invasive and require handling and restraint. Two studies examined the effects of light intensity and flooring on the following in broilers: 1) traditional methods for assessing stress using heterophil-to-lymphocyte ratios and serum corticosterone (CORT) concentrations, 2) noninvasive measures of stress from infrared thermography (IRT) eye and beak surface temperatures, and 3) latency-to-lie (LTL) test times of birds tested individually and in groups of 5. Read More

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http://dx.doi.org/10.1016/j.psj.2020.03.028DOI Listing

Herpesvirus of turkey vectored avian influenza vaccine offers cross-protection against antigenically drifted H5Nx highly pathogenic avian influenza virus strains.

Avian Pathol 2020 Jul 2:1-25. Epub 2020 Jul 2.

Ceva-Phylaxia, Ceva Sante Animale, Budapest 1107, Hungary.

Among the different vaccines used to control highly pathogenic avian influenza a HVT vector-based live recombinant avian influenza vaccine, expressing the hemagglutinin gene of a H5N1 HPAI virus, has been used by the poultry industry since 2012. The objective of the study presented in this paper was to test the efficacy of the commercially available HVT-based recombinant H5 vaccine against antigenically drifted H5N1, H5N8 and H5N2 HPAI virus circulating in Egypt recently. Groups of SPF chicks vaccinated at day-old with the HVT-based recombinant H5 vaccine were challenged, along with non-vaccinated controls, with 10 EID each of H5N1, H5N2 and H5N8 HPAI virus at 28 days of age. Read More

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http://dx.doi.org/10.1080/03079457.2020.1790502DOI Listing

A Rare Case with Quail Egg Allergy without Allergic Reactions to Oral Food Challenge with Hen's Egg White.

Iran J Allergy Asthma Immunol 2020 Jun 23;19(3):310-312. Epub 2020 Jun 23.

Department of Allergy and Clinical Immunology, Rasool-e-akram Hospital, Iran University of Medical Sciences, Tehran, Iran.

Hen's egg, as one of the most common reasons for IgE-mediated food hypersensitivity, affects both children and adults. Taking precautionary measures is suggested for the consumption of other birds' eggs for patients with allergy to hen's egg. This paper describes a rare patient with quail egg allergy, which manifested no allergic reactions after oral food challenge with hen's egg white. Read More

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http://dx.doi.org/10.18502/ijaai.v19i3.3459DOI Listing

Protozoan and Helminth Infections of Aviary-Reared Alectoris rufa (Galliformes: Phasianidae) before Releasing for Hunting in the Czech Republic: Infection Dynamics and Potential Risks.

Authors:
O Máca I Pavlásek

J Parasitol 2020 Aug;106(4):439-443

Department of Pathology and Parasitology, State Veterinary Institute Prague, Sídlištní 136/24, 165 03, Prague 6, Czech Republic.

Age-related dynamics of protozoan and helminth infections in the red-legged partridge, Alectoris rufa, were studied in an intensive breeding aviary in the Czech Republic before releasing birds for hunting purposes. Pooled fecal samples (n = 900) were examined over 3 rearing seasons (2012-2014). A total of 4 protozoan species, Cryptosporidium baileyi, Cryptosporidium meleagridis, Eimeria kofoidi, and Eimeria legionensis, and 4 helminths, Capillaria phasianina, Eucoleus perforans, Heterakis gallinarum, and Syngamus trachea, was found. Read More

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http://dx.doi.org/10.1645/17-129DOI Listing