287,907 results match your criteria Avian And Poultry Biology Reviews[Journal]

Impact of inland waters on highly pathogenic avian influenza outbreaks in neighboring poultry farms in South Korea.

J Vet Sci 2022 May;23(3):e36

Department of Veterinary Internal Medicine, College of Veterinary Medicine and BK21 FOUR Program, Chonnam National University, Gwangju 61186, Korea.

Background: Since 2003, the H5 highly pathogenic avian influenza (HPAI) subtype has caused massive economic losses in the poultry industry in South Korea. The role of inland water bodies in avian influenza (AI) outbreaks has not been investigated. Identifying water bodies that facilitate risk pathways leading to the incursion of the HPAI virus (HPAIV) into poultry farms is essential for implementing specific precautionary measures to prevent viral transmission. Read More

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Human-to-human transmission of Chlamydia psittaci in China, 2020: an epidemiological and aetiological investigation.

Lancet Microbe 2022 May 23. Epub 2022 May 23.

Key Laboratory of Aetiology and Epidemiology of Emerging Infectious Diseases in Universities of Shandong, Shandong First Medical University and Shandong Academy of Medical Sciences, Tai'an, China; School of Public Health, Shandong First Medical University and Shandong Academy of Medical Sciences, Tai'an, China. Electronic address:

Background: Chlamydia psittaci can infect a wide range of avian species, occasionally causing psittacosis (also known as parrot fever) in humans. Most human psittacosis cases are associated with close contact with pet birds or poultry. In December, 2020, an outbreak of severe community-acquired pneumonia of unknown aetiology was reported in a hospital in Shandong province, China, and some of the patients' close contacts had respiratory symptoms. Read More

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Perceived predation risk predicts glucocorticoid hormones, but not reproductive success in a colonial rodent.

Horm Behav 2022 May 23;143:105200. Epub 2022 May 23.

Department of Biology, University of Saskatchewan, Saskatoon, SK, Canada.

The Cort-Adaptation hypothesis suggests that elevated glucocorticoids (GCs) can facilitate an adaptive response to environmental and physiological challenges. Most previous studies have focused on avian species, which may limit their generalizability to mammals, where lactation is known to be a major physiological challenge. Furthermore, the effect of predation risk on GC levels has not been tested in the Cort-Adaptation hypothesis. Read More

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Killing three birds with one stone: Near-infrared light triggered nitric oxide release for enhanced photodynamic and anti-inflammatory therapy in refractory keratitis.

Biomaterials 2022 May 19;286:121577. Epub 2022 May 19.

School of Ophthalmology and Optometry, Eye Hospital, School of Biomedical Engineering, Wenzhou Medical University, Wenzhou, 325000, PR China; Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou, 325000, PR China; Oujiang Laboratory, Wenzhou, 325000, PR China.

Stubborn resistant bacteria, bacterial biofilms and severe inflammation are challenging issues in refractory keratitis treatment. Herein, we design a multifunctional near-infrared light-responsive nanoplatform for efficient therapy of refractory keratitis based on a "three-birds-with-one-stone" strategy, which integrates the bacteria targeting photodynamic therapy, nitric oxide (NO) sterilization, and NO-mediated anti-inflammatory property into one system. This nanoplatform (UCNANs) is constructed using the dual-emissive upconversion nanoparticles (UCNPs) as cores coated with mesoporous silica for the loading of photosensitizers with aggregation-induced emission (AIE) property and the grafting of NO donors and bacteria targeting molecules. Read More

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Increased virulence of a novel reassortant H1N3 avian influenza virus in mice as a result of adaptive amino acid substitutions.

Virus Genes 2022 May 26. Epub 2022 May 26.

State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, and National Clinical Research Center for Infectious Diseases, the First Affiliated Hospital, School of Medicine, Zhejiang University, 79 Qingchun Road, Hangzhou, 310003, Zhejiang, China.

In this study, a novel multiple-gene reassortant H1N3 subtype avian influenza virus (AIV) (A/chicken/Zhejiang/81213/2017, CK81213) was isolated in Eastern China, whose genes were derived from H1 (H1N3), H7 (H7N3 and H7N9), and H10 (H10N3 and H10N8) AIVs. This AIV belongs to the avian Eurasian-lineage and exhibits low pathogenicity. Serial lung-to-lung passages of CK81213 in mice was performed to study the amino acid substitutions potentially related to the adaptation of H1 AIVs in mammals. Read More

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susceptibility of isolates to antimicrobial agents.

Avian Pathol 2022 May 26:1-7. Epub 2022 May 26.

Veterinary Medical Research Institute, Eötvös Loránd Research Network, Budapest, Hungary.

a potential re-emerging avian pathogen mainly affecting turkeys, has been reported from many parts of the world. Poor hatchability, embryonic death, joint and skeletal abnormalities, poor ossification, runting-stunting, poor feathering and airsacculitis may be observed in infected flocks. The reduction of the severity of clinical signs and short-term control of are performed by antibiotic treatment. Read More

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Infectious bursal disease virus' interferences with host immune cells: What do we know?

Avian Pathol 2022 May 26:1-31. Epub 2022 May 26.

Clinic for Poultry, University of Veterinary Medicine Hannover, 30559 Hannover, Germany.

Infectious bursal disease virus (IBDV) induces one of the most important immunosuppressive diseases in chickens leading to high economic losses due increased mortality and condemnation rates, secondary infections and the need for antibiotic treatment. Over 400 publications have been listed in PubMed.gov in the last five years pointing out the research interest in this disease and the development of improved preventive measures. Read More

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Diversity of CRESS DNA Viruses in Squamates Recapitulates Hosts Dietary and Environmental Sources of Exposure.

Microbiol Spectr 2022 May 26:e0078022. Epub 2022 May 26.

Department of Veterinary Medicine, University of Bari, Valenzano, Italy.

Replication-associated protein (Rep)-encoding single-stranded (CRESS) DNA viruses comprise viruses with covalently closed, circular, single-stranded DNA (ssDNA) genomes, and are considered the smallest known autonomously replicating, capsid-encoding animal pathogens. CRESS DNA viruses (phylum ) encompass several viral families including . Circoviruses are classified into two genera, and , and they are known to cause fatal diseases in birds and pigs. Read More

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Dynamics of helminth fauna of black-legged kittiwake in the Russian Arctic in the context of climate changes.

J Helminthol 2022 May 26;96:e36. Epub 2022 May 26.

Laboratory of Ornithology and Parasitology, Murmansk Marine Biological Institute, Russian Academy of Sciences, 183010 Murmansk, Russia.

We present the results of our studies of the helminth fauna and the diet of the black-legged kittiwake (Rissa tridactyla Linnaeus, 1758) in the Gorodetskiy bird colonies on the Rybachiy Peninsula (Murman coast of the Barents Sea) carried out in 2006-2008 and in 2018-2020. We did not find any noticeable changes in the species diversity of the helminth fauna of the kittiwakes, the proportion of the dominant parasite species and the values of most quantitative infection indices between the two study periods. At the same time, there was a marked decrease in the mean abundance of the dominant cestode species (Alcataenia larina Krabbe, 1869 and Tetrabothrius erostris Loennberg, 1889) in 2018-2020 as compared to 2006-2008. Read More

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Seroprevalence and Associated Risk Factors of Infection in Poultry Farms of Hawasa and Bishoftu, Central Ethiopia.

Vet Med (Auckl) 2022 18;13:101-107. Epub 2022 May 18.

School of Veterinary Medicine, Wollega University, Nekemte, Ethiopia.

Background: (MG) infection is an economically important respiratory disease in the poultry production system worldwide. It is characterized by rapid transmission and causing many obstacles to poultry industries in different parts of Ethiopia.

Methods: A cross-sectional study was employed from January to September 2021 to estimate the seroprevalence and associated risk factors of MG in domestic layer chickens in large and small commercial poultry farms in Hawassa and Bishoftu area, Ethiopia. Read More

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Timing and Distribution of Mitotic Activity in the Retina During Precocial and Altricial Modes of Avian Development.

Front Neurosci 2022 9;16:853544. Epub 2022 May 9.

Departamento de Anatomía, Biología Celular y Zoología, Facultad de Ciencias, Universidad de Extremadura, Badajoz, Spain.

During development of the vertebrate retina, mitotic activity is defined as apical when is located at the external surface of the neuroepithelium or as non-apical when is found in more internal regions. Apical mitoses give rise to all retinal cell types. Non-apical mitoses are linked to committed horizontal cell precursors that subsequently migrate vitreo-sclerally, reaching their final position in the outer surface of the inner nuclear layer, where they differentiate. Read More

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Yolk corticosterone and progesterone levels in Greater Rhea (Rhea americana) eggs vary in a changing social environment.

J Exp Zool A Ecol Integr Physiol 2022 May 25. Epub 2022 May 25.

Centro de Zoología Aplicada, Facultad de Ciencias Exactas, Físicas y Naturales, Universidad Nacional de Córdoba, Córdoba, Córdoba Province, Argentina.

Maternal hormones in avian egg yolks may signal and prepare offspring for the prevailing conditions. However, this adjustment requires some degree of flexibility in regulating yolk hormone deposition. The Greater Rhea (Rhea americana) has a particular mating system that combines mixed polygyny and polyandry, communal nesting, and exclusive paternal care of chicks. Read More

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Fossil biomolecules reveal an avian metabolism in the ancestral dinosaur.

Nature 2022 May 25. Epub 2022 May 25.

Department of Earth and Planetary Sciences, Yale University, New Haven, CT, USA.

Birds and mammals independently evolved the highest metabolic rates among living animals. Their metabolism generates heat that enables active thermoregulation, shaping the ecological niches they can occupy and their adaptability to environmental change. The metabolic performance of birds, which exceeds that of mammals, is thought to have evolved along their stem lineage. Read More

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Prussian blue technique is prone to yield false negative results in magnetoreception research.

Sci Rep 2022 May 25;12(1):8803. Epub 2022 May 25.

AG Sensory Biology of Animals, Institute of Biology and Environmental Sciences, University Oldenburg, 26111, Oldenburg, Germany.

Perls's Prussian blue staining technique has been used in magnetoreception research to screen tissues for iron-rich structures as proxies for putative magnetoreceptor structures based on magnetic particles. However, seemingly promising structural candidates in the upper beak of birds detected with Prussian blue turned out to be either irreproducible or located in non-neuronal cells, which has spurred a controversy that has not been settled yet. Here we identify possible pitfalls in the previous works and apply the Prussian blue technique to tissues implicated in magnetic-particle-based magnetoreception, in an effort to reassess its suitability for staining single-domain magnetite, i. Read More

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Acute aflatoxicosis outbreak in rheas (Rhea americana) in Brazil: Case report.

Toxicon 2022 May 22. Epub 2022 May 22.

Center of Agricultural Sciences, Department of Veterinary Morphophysiology, Federal University of Piauí, UFPI, CEP: 64049-550, Teresina, Piauí, Brazil. Electronic address:

Aflatoxins are mycotoxins capable of contaminating food, and can cause toxic effects, teratogenicity, mutagenicity, carcinogenicity, and immune system depression. The presence of fungi which produce this metabolite in ingredients that compose the animal feed increased the risk of the emergence of aflatoxicosis. The objective of this study was to report an aflatoxicosis outbreak in rheas (Rhea americana) from a farm in Teresina, PI, Brazil, fed with commercial feed. Read More

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Effects of early-life cecal microbiota transplantation from divergently selected inbred chicken lines on growth, gut serotonin, and immune parameters in recipient chickens.

Poult Sci 2022 Apr 22;101(7):101925. Epub 2022 Apr 22.

Livestock Behavior Research Unit, USDA-Agricultural Research Service, West Lafayette, IN 47907, USA. Electronic address:

Recent studies have revealed that fecal microbiota transplantation exerts beneficial effects on modulating stress-related inflammation and gastrointestinal health of the host. The aim of this study was to examine if cecal microbiota transplantation (CMT) presents similar efficiency in improving the health status of egg-laying strain chickens. Chicken lines 6 and 7 divergently selected for resistance or susceptibility to Marek's disease were used as CMT donors. Read More

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Kinematic trajectories in response to speed perturbations in walking suggest modular task-level control of leg angle and length.

Integr Comp Biol 2022 May 24. Epub 2022 May 24.

Department of Ecology and Evolutionary Biology, University of California, Irvine, CA 92697.

Navigating complex terrains requires dynamic interactions between the substrate, musculoskeletal and sensorimotor systems. Current perturbation studies have mostly used visible terrain height perturbations, which do not allow us to distinguish among the neuromechanical contributions of feedforward control, feedback-mediated and mechanical perturbation responses. Here, we use treadmill belt speed perturbations to induce a targeted perturbation to foot speed only, and without terrain-induced changes in joint posture and leg loading at stance onset. Read More

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Effects of Virtual Reality-Based Multimodal Audio-Tactile Cueing in Patients With Spatial Attention Deficits: Pilot Usability Study.

JMIR Serious Games 2022 May 25;10(2):e34884. Epub 2022 May 25.

Gerontechnology & Rehabilitation Group, University of Bern, Bern, Switzerland.

Background: Virtual reality (VR) devices are increasingly being used in medicine and other areas for a broad spectrum of applications. One of the possible applications of VR involves the creation of an environment manipulated in a way that helps patients with disturbances in the spatial allocation of visual attention (so-called hemispatial neglect). One approach to ameliorate neglect is to apply cross-modal cues (ie, cues in sensory modalities other than the visual one, eg, auditory and tactile) to guide visual attention toward the neglected space. Read More

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Production and characterization of a new detergent-stable keratinase expressed by Pedobacter sp. 3.14.7, a novel Antarctic psychrotolerant keratin-degrading bacterium.

J Genet Eng Biotechnol 2022 May 25;20(1):81. Epub 2022 May 25.

Centro de Investigación y Desarrollo en Fermentaciones Industriales, Facultad de Ciencias Exactas (CINDEFI, CCT La Plata-CONICET, UNLP), Universidad Nacional de la Plata, Calle 47 y 115, (B1900ASH), 1900, La Plata, Argentina.

Background: Antarctica is one of the harshest environments in the world. Despite this fact, it has been colonized by microorganisms, which had to develop different adaptations in order to survive. By studying their enzymes, we can harness these adaptations in order to use them in various industrial processes. Read More

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The costs and benefits of larger brains in fishes.

J Evol Biol 2022 May 25. Epub 2022 May 25.

Department of Interdisciplinary Life Sciences, Konrad Lorenz Institute of Ethology, University of Veterinary Medicine Vienna, Vienna, Austria.

The astonishing diversity of brain sizes observed across the animal kingdom is typically explained in the context of trade-offs: the benefits of a larger brain, such as enhanced cognitive ability, are balanced against potential costs, such as increased energetic demands. Several hypotheses have been formulated in this framework, placing different emphasis on ecological, behavioural, or physiological aspects of trade-offs in brain size evolution. Within this body of work, there exists considerable taxonomic bias towards studies of birds and mammals, leaving some uncertainty about the generality of the respective arguments. Read More

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Putative Novel Avian Paramyxovirus (AMPV) and Reidentification of APMV-2 and APMV-6 to the Species Level Based on Wild Bird Surveillance (United States, 2016-2018).

Appl Environ Microbiol 2022 May 25:e0046622. Epub 2022 May 25.

Department of Pathology, College of Veterinary Medicine, University of Georgiagrid.213876.9, Athens, Georgia, USA.

Avian paramyxoviruses (APMVs) (subfamily ) have been isolated from over 200 species of wild and domestic birds around the world. The International Committee on Taxonomy of Viruses (ICTV) currently defines 22 different APMV species, with (whose viruses are designated APMV-1) being the most frequently studied due to its economic burden to the poultry industry. Less is known about other APMV species, including limited knowledge on the genetic diversity in wild birds, and there is a paucity of public whole-genome sequences for APMV-2 to -22. Read More

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[Expression of NDV HN protein in rice and development of a semi-quantitative rapid method for detection of antibodies].

Sheng Wu Gong Cheng Xue Bao 2022 May;38(5):1981-1993

International Joint Research Center of National Animal Immunology, Henan Agricultural University, Zhengzhou 450046, Henan, China.

The aim of this study was to develop a semi-quantitative immunochromatographic method for rapid detection of Newcastle disease virus (NDV) antibodies by expressing HN protein in rice endosperm bioreactor. The recombinant plasmid pUC57-HN was digested by Ⅰ and Ⅰ to retrieve the HN gene, while the intermediate vector pMP3 containing promoter, signal peptide and terminator was digested by Ⅰ and Ⅰ. The HN gene and the linearized pMP3 were purified and ligated to form a recombinant plasmid pMP3-HN1. Read More

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Unique -associated histologic lesions in white-rumped shama ().

Vet Pathol 2022 May 25:3009858221098425. Epub 2022 May 25.

San Diego Zoo Wildlife Alliance, San Diego, CA.

Twenty-one white-rumped shamas (19 necropsied, 2 biopsied) () housed at the San Diego Zoo between 1992 and 2020 were diagnosed with infection based on evaluation of histologic sections. Review of these cases revealed a consistent histologic lesion characterized by nodular aggregates of atypical epithelioid macrophages containing few intracytoplasmic protozoa, with or without lymphocytic infiltrates. Of the 19 necropsied cases, 16 (84%) had systemic lesions variably affecting the liver, spleen, gastrointestinal tract, lung, pancreas, connective tissues, or bone marrow, while all 21 diagnosed cases had skin involvement. Read More

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The sentience shift in animal research.

New Bioeth 2022 May 25:1-16. Epub 2022 May 25.

School of History and Philosophy of Science, The University of Sydney, Sydney, Australia.

One of the primary concerns in animal research is ensuring the welfare of laboratory animals. Modern views on animal welfare emphasize the role of animal sentience, i.e. Read More

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Feather chemicals contain information about the major histocompatibility complex in a highly scented seabird.

Proc Biol Sci 2022 May 25;289(1975):20220567. Epub 2022 May 25.

Graduate Group in Ecology, University of California Davis, Davis CA 95616, USA.

Mate choice informed by the immune genes of the major histocompatibility complex (MHC) may provide fitness benefits including offspring with increased immunocompetence. Olfactory cues are considered the primary mechanism organisms use to evaluate the MHC of potential mates, yet this idea has received limited attention in birds. Motivated by a finding of MHC-dependent mate choice in the Leach's storm-petrel (), we examined whether the chemical profiles of this highly scented seabird contain information about MHC genes. Read More

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Quantifying the impacts of 166 years of land cover change on lowland bird communities.

Proc Biol Sci 2022 May 25;289(1975):20220338. Epub 2022 May 25.

Graduate School of Agriculture, Hokkaido University, Nishi 9, Kita 9, Kita-ku, Sapporo, Hokkaido 060-8589, Japan.

Land cover change for agriculture is thought to be a major threat to global biodiversity. However, its ecological impact has rarely been quantified in the Northern Hemisphere, as broad-scale conversion to farmland mainly occurred until the 1400s-1700s in the region, limiting the availability of sufficient data. The Ishikari Lowland in Hokkaido, Japan, offers an excellent opportunity to address this issue, as hunter-gatherer lifestyles dominated this region until the mid-nineteenth century and land cover maps are available for the period of land cover changes (i. Read More

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Evidence of attack deflection suggests adaptive evolution of wing tails in butterflies.

Proc Biol Sci 2022 May 25;289(1975):20220562. Epub 2022 May 25.

Institut de Systématique, Evolution, Biodiversité (ISYEB, UMR 7205), Muséum National d'Histoire Naturelle, CNRS, Sorbonne Université, EPHE, UA, Paris, France.

Predation is a powerful selective force shaping many behavioural and morphological traits in prey species. The deflection of predator attacks from vital parts of the prey usually involves the coordinated evolution of prey body shape and colour. Here, we test the deflection effect of hindwing (HW) tails in the swallowtail butterfly . Read More

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Macroevolutionary dynamics of climatic niche space.

Proc Biol Sci 2022 May 25;289(1975):20220091. Epub 2022 May 25.

Department of Ecology and Evolutionary Biology, Yale University, New Haven, CT 06511, USA.

How and why lineages evolve along with niche space as they diversify and adapt to different environments is fundamental to evolution. Progress has been hampered by the difficulties of linking a robust empirical characterization of species niches with flexible evolutionary models that describe their evolution. Consequently, the relative influence of abiotic and biotic factors remains poorly understood. Read More

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Prevalence and richness of malaria and malaria-like parasites in wild birds from different biomes in South America.

PeerJ 2022 19;10:e13485. Epub 2022 May 19.

Department of Parasitology, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil.

South America has different biomes with a high richness of wild bird species and Diptera vectors, representing an ideal place to study the influence of habitat on vector-borne parasites. In order to better understand how different types of habitats do or do not influence the prevalence of haemosporidians, we performed a new analysis of two published datasets comprising wild birds from the Brazilian Savanna (Cerrado) as well as wild birds from the Venezuelan Arid Zone. We investigated the prevalence and genetic diversity of haemosporidian parasites belonging to two genera: and . Read More

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Protecting-Group-Free Synthesis of Glycopolymers Bearing Sialyloligosaccharide and Their High Binding with the Influenza Virus.

ACS Macro Lett 2014 Oct 6;3(10):1074-1078. Epub 2014 Oct 6.

Department of Biobased Materials Science, Graduate School of Science and Technology, Kyoto Institute of Technology, Matsugasaki, Sakyo-ku, Kyoto 606-8585, Japan.

Glycopolymers having pendant triazole-linked sialyloligosaccharides were successfully synthesized from free saccharides without any protection of the hydroxy and carboxy groups on the saccharides. The glycomonomers were synthesized by the direct azidation of free saccharides using 2-chloro-1,3-dimethylimidazolinium chloride as a condensing agent followed by copper(I)-catalyzed azide-alkyne cycloaddition. The resultant glycomonomers were copolymerized with acrylamide by a reversible addition-fragmentation chain transfer technique. Read More

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October 2014