88 results match your criteria: "Beltsville Agricultural Research Center (BARC) Agricultural Research Service (ARS)[Affiliation]"

The flat mite Tenuipalpus uvae De Leon (Acari: Tenuipalpidae): descriptions of all stages, ontogeny of setae and morphometric analysis.

Zootaxa

July 2024

Programa de Pós-Graduação em Produção Vegetal; Universidade Estadual de Santa Cruz (UESC); Rodovia Jorge Amado km 16; Ilhéus; BA; 45662-900; Brazil.

Article Synopsis
  • - The flat mite species Tenuipalpus uvae, found in the Americas, is redescribed using both older and newly collected specimens from Florida and Brazil, revealing more details about its morphology, including new descriptions for various life stages.
  • - Three key distinguishing features were identified: a shorter seta v2, the serrated, rodlike sc1-2, and specific characteristics of the leg tibiae, which help differentiate T. uvae from other mites.
  • - Notable variations in dorsal surface morphology were observed, particularly in the Florida population, indicating potential influences from aging, environmental factors, or host relationships, suggesting that further research is necessary to understand these differences.
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Temporal Changes in Jejunal and Ileal Microbiota of Broiler Chickens with Clinical Coccidiosis ().

Animals (Basel)

October 2024

Animal Biosciences and Biotechnology Laboratory (ABBL), Beltsville Agricultural Research Center (BARC), United States Department of Agriculture-Agricultural Research Service (USDA-ARS), Beltsville, MD 20705, USA.

Coccidiosis in broiler chickens continues to be a major disease of the gastrointestinal tract, causing economic losses to the poultry industry worldwide. The goal of this study was to generate a symptomatic (1000 oocysts) infection to determine its effect on the luminal and mucosal microbiota populations (L and M) in the jejunum and ileum (J and IL). Samples were taken from day 0 to 14 post-infection, and sequencing of 16S rRNA was performed using Illumina technology.

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Zinc () supplementation has proved to mitigate the effects of heat stress with varying effects evident with Zn source during acute heat events. However, the effects of Zn supplementation during long-term summer weather patterns have yet to be explored. Therefore, the objective of this study was to identify the effects of supplementation source and level of Zn to mitigate the negative effects of long-term, cyclic heat stress in finishing swine.

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Minimum Concentrations of Slow Pyrolysis Paper and Walnut Hull Cyclone Biochars Needed to Inactivate Escherichia coli O157:H7 in Soil.

J Food Prot

March 2024

U.S. Department of Agriculture, Agricultural Research Service, Northeast Area, 10300 Baltimore Ave., Bldg. 003, BARC-West, Beltsville, MD 20705-2350, USA.

Antimicrobial properties of biochar have been attributed to its ability to inactivate foodborne pathogens in soil, to varying degrees. High concentrations of biochar have reduced E. coli O157:H7 in soil and dairy manure compost, based on alkaline pH.

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A New Species of (Acari: Tenuipalpidae) from Brazil and Re-Description of (De Leon), the Type Species of the Genus, with DNA Barcodes.

Animals (Basel)

June 2023

Department of Biological Sciences, Institute of Biosciences, Humanities and Exact Sciences (IBILCE), São Paulo State University (UNESP), São José do Rio Preto 15054-000, SP, Brazil.

Species of the genus bear a broad subquadrate propodosoma with many large, flattened, lanceolate to ovate dorsal setae. They also bear some plesiomorphic character states, such as the presence of three pairs of ventral setae. Here, we describe Castro, Ochoa & Feres sp.

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Post-processed data and graphical tools for a CONUS-wide eddy flux evapotranspiration dataset.

Data Brief

June 2023

USDA-ARS Hydrology and Remote Sensing Laboratory, Bldg. 007, Rm. 104, BARC-West, Beltsville, MD 20705-2350 USA.

Large sample datasets of evapotranspiration (ET) measurements with well documented data provenance and quality assurance are critical for water management and many fields of earth science research. We present a post-processed ET oriented dataset at daily and monthly timesteps, from 161 stations, including 148 eddy covariance flux towers, that were chosen based on their data quality from nearly 350 stations across the contiguous United States. In addition to ET, the data includes energy and heat fluxes, meteorological measurements, and reference ET downloaded from gridMET for each flux station.

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Passiflora edulis, commonly known as passion fruit, is a vine species of passionflower native to South America. In Colombia, yellow passion fruit (P. edulis f.

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Seven species complexes are treated, namely species complex (FASC) (two species), species complex (FBSC) (five species), species complex (FBURSC) (three species), species complex (FCAMSC) (three species), species complex (FCSC) (eight species), species complex (FCCSC) (five species) and the species complex (FCOSC) (four species). New species include from soil (Zimbabwe), and from soil associated with (Netherlands). New combinations include and Newly validated taxa include , , , and .

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Stigmaeopsis nanjingensis (Ma and Yuan) (Acari: Tetranychidae) is an important pest of bamboo-feeding behavior and silk production by the female adult mites is seriously harmful to bamboo leaves. Due to its small size, silking and cocooning, its management is difficult. This study discusses a fast and easy method for management of the pest by disturbing the spinning behavior.

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Development and Characterization of New Monoclonal Antibodies Against Porcine Interleukin-17A and Interferon-Gamma.

Front Immunol

March 2022

Animal Parasitic Diseases Laboratory, Beltsville Agricultural Research Center (BARC), Agricultural Research Service (ARS), United States Department of Agriculture (USDA), Beltsville, MD, United States.

Current research efforts require a broad range of immune reagents, but those available for pigs are limited. The goal of this study was to generate priority immune reagents for pigs and pipeline them for marketing. Our efforts were aimed at the expression of soluble swine cytokines and the production of panels of monoclonal antibodies (mAbs) to these proteins.

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Natural killer (NK) cells have been studied extensively in humans and mice for their vital role in the vertebrate innate immune system. They are known to rapidly eliminate tumors or virus infected cells in an immune response utilizing their lytic properties. The natural cytotoxicity receptors (NCRs) NKp30 (NCR3), NKp44 (NCR2), and NKp46 (NCR1) are important mediators of NK-cell cytotoxicity.

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Article Synopsis
  • Microbiome studies in animal science are getting more popular because the technology is getting cheaper and easier to use.
  • This review aims to help animal scientists who don't know much about a specific technique called 16S rRNA gene sequencing by explaining its basics and important issues to think about.
  • It covers different parts of the study process, like planning, collecting samples, lab work, and analyzing data, and also points out special things to consider for different animals and samples.
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Increased knowledge of reproduction and health of domesticated animals is integral to sustain and improve global competitiveness of U.S. animal agriculture, understand and resolve complex animal and human diseases, and advance fundamental research in sciences that are critical to understanding mechanisms of action and identifying future targets for interventions.

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Host-specific legume-rhizobium symbiosis is strictly controlled by rhizobial type III effectors (T3Es) in some cases. Here, we demonstrated that the symbiosis of Vigna radiata (mung bean) with Bradyrhizobium diazoefficiens USDA110 is determined by NopE, and this symbiosis is highly dependent on host genotype. NopE specifically triggered incompatibility with V.

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Low and high egg producing hens exhibit gene expression differences related to ovarian steroidogenesis. High egg producing hens display increased expression of genes involved in progesterone and estradiol production, in the granulosa layer of the largest follicle (F1G) and small white follicles (SWF), respectively, whereas low egg producing hens display increased expression of genes related to progesterone and androgen production in the granulosa (F5G) and theca interna layer (F5I) of the fifth largest follicle, respectively. Transcriptome analysis was performed on F1G, F5G, F5I, and SWF samples from low and high egg producing hens to identify novel regulators of ovarian steroidogenesis.

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Fluxes of agricultural nitrogen and metolachlor metabolites are highly correlated in a first order stream in Maryland, USA.

Sci Total Environ

May 2020

US Department of Agriculture (USDA), Agricultural Research Service (ARS), Beltsville Agricultural Research Center (BARC), 10300 Baltimore Avenue, Beltsville, MD 20705, USA.

Nitrogen pollution in watersheds containing significant cropland area is generally problematic. Conservation practices intended to reduce nitrate-N (NO-N) export from watersheds are being implemented by many regions without necessary tools to assess effectiveness of abatement. A commonly used herbicide metolachlor degrades in the vadose zone of croplands to form two metabolites (metolachlor ethane sulfonic acid (MESA) and metolachlor oxanilic acid (MOXA)) which are both highly soluble in soils.

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Cryptosporidium and Giardia in Ruminants.

Vet Clin North Am Food Anim Pract

March 2020

Environmental Microbial and Food Safety Laboratory, Beltsville Agricultural Research Center, Agricultural Research Service, US Department of Agriculture, BARC-East, Building 173, 10300 Baltimore Avenue, Beltsville, MD 20705, USA. Electronic address:

Cryptosporidium and Giardia are ubiquitous protozoan parasites that infect a broad range of vertebrate hosts, including domestic and wild animals as well as humans. Both parasites are of medical and veterinary importance. Infections with Cryptosporidium and Giardia in ruminants are associated with diarrhea outbreaks, mainly in young animals.

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Method to Evaluate the Age of Groundwater Inputs to Surface Waters by Determining the Chirality Change of Metolachlor Ethanesulfonic Acid (MESA) Captured on a Polar Organic Chemical Integrative Sampler (POCIS).

J Agric Food Chem

February 2020

Pasture Systems & Watershed Management Research , US Department of Agriculture (USDA), Agricultural Research Service (ARS) , Curtin Road, Building 3702 , University Park, Pennsylvania 16802 , United States.

Article Synopsis
  • Researchers developed a new method to estimate groundwater mean residence time using changes in the enantiomeric ratio of metolachlor’s metabolite, MESA, which previously required impractical amounts of grab sampling.
  • They tested polar organic chemical integrative samplers (POCIS) over 28 days at various U.S. sites to see if they could effectively capture MESA levels compared to traditional sampling.
  • The study's findings, including calculated sampling rates and molecular modeling predictions, aim to improve understanding of groundwater dynamics and assess nitrate-N delivery to surface waters under different agricultural practices.
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Characterization of Virulent Strains from Necrotic Enteritis-Affected Broiler Chicken Farms.

Avian Dis

September 2019

Animal Biosciences and Biotechnology Laboratory, Beltsville Agricultural Research Center (BARC), Agricultural Research Service (ARS), U.S. Department of Agriculture (USDA), Beltsville, MD 20705,

(CP) type A and newly created type G strains are the key etiological factors in the induction of necrotic enteritis (NE), an important enteric disease that is responsible for the annual loss of $6 billion in the worldwide poultry industry. Several CP toxin genes were found to be critical in NE pathogenesis in chickens, but limited information is available on the CP lethal toxin gene. In this study, 19 CP strains isolated from NE-affected chicken farms were characterized microbiologically and molecularly and evaluated for their pathogenicity in commercial broiler chickens.

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Background: Blueberry is of high economic value. Most blueberry varieties selected for the fresh market have an appealing light blue coating or "bloom" on the fruit due to the presence of a visible heavy epicuticular wax layer. This waxy layer also serves as natural defense against fruit desiccation and deterioration.

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This report provides an update from the U.S. Department of Agriculture - Centers for Disease Control and Prevention Sentinel Foods Surveillance Program, exploring changes in sodium and related nutrients (energy, potassium, total and saturated fat, and total sugar) in popular, sodium-contributing, commercially processed and restaurant foods with added sodium.

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Toxoplasma gondii tissue cyst formation and density of tissue cysts in shoulders of pigs 7 and 14 days after feeding infected mice tissues.

Vet Parasitol

May 2019

United States Department of Agriculture (USDA), Agricultural Research Service (ARS), Beltsville Agricultural Research Center (BARC), Animal Parasitic Diseases Laboratory, Beltsville, MD 20705, USA. Electronic address:

Among the meat sources of Toxoplasma gondii, pork is considered important in the epidemiology of toxoplasmosis in the USA. How soon after infection T. gondii forms tissue cysts in pork is unknown.

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First report of antibodies to Neospora spp. in horses from Portugal.

Rev Bras Parasitol Vet

July 2019

Departamento de Ciências Veterinárias, Escola de Ciências Agrárias e Veterinárias, Universidade de Trás-os-Montes e Alto Douro - UTAD, Vila Real, Portugal.

Neospora spp. are intracellular protozoa with worldwide distribution and closely related to Toxoplasma gondii, which can infect a variety of mammals including horses. From September 2013 to June 2014, 185 horses from northern, central and southern parts of mainland Portugal were randomly sampled and tested for detection of immunoglobulin (Ig) G antibodies to Neospora spp.

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Pancreatic duct-like cell line derived from pig embryonic stem cells: expression of uroplakin genes in pig pancreatic tissue.

In Vitro Cell Dev Biol Anim

April 2019

Agricultural Research Service, NEA, Beltsville Agricultural Research Center, Animal Biosciences and Biotechnology Laboratory, U.S. Department of Agriculture, Bldg. 200, Rm. 13, BARC-East, Beltsville, MD, 20705, USA.

The isolation of a cell line, PICM-31D, with phenotypic characteristics like pancreatic duct cells is described. The PICM-31D cell line was derived from the previously described pig embryonic stem cell-derived exocrine pancreatic cell line, PICM-31. The PICM-31D cell line was morphologically distinct from the parental cells in growing as a monolayer rather than self-assembling into multicellular acinar-like structures.

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