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Comparison Of Naturally Occurring Vs. Experimental Infection Of Staphylococcus Aureus Septicemia In Laying Hens In Two Different Age Groups, Meaghan Meyer, Elizabeth Bobeck, Yuko Sato, Mohamed El-Gazzar 2021 Iowa State University

Comparison Of Naturally Occurring Vs. Experimental Infection Of Staphylococcus Aureus Septicemia In Laying Hens In Two Different Age Groups, Meaghan Meyer, Elizabeth Bobeck, Yuko Sato, Mohamed El-Gazzar

Animal Science Publications

In April and November of 2018, multiple commercial laying hen flocks within the same company presented with a sharp increase in mortality and drop in egg production that persisted for several days. These flocks showed striking necropsy lesions consistent with systemic infection and responded to antimicrobial treatment in the feed. Staphylococcus aureus (SA) was the most frequently isolated organism from multiple tissues including comb and wattle lesions, lungs, liver, ovary, spleen, and bone marrow. Given such an uncommon presentation of SA, which is known as a secondary opportunistic pathogen, a challenge study was conducted to evaluate its role in these ...


Complete Coding Genome Sequence Of A Novel Porcine Reproductive And Respiratory Syndrome Virus 2 Restriction Fragment Length Polymorphism 1-4-4 Lineage 1c Variant Identified In Iowa, Usa, Giovani Trevisan, Ganwu Li, Cesar A.A. Moura, Katie Coleman, Pete Thomas, Jianqiang Zhang, Phillip Gauger, Michael Zeller, Daniel C.L. Linhares 2021 Iowa State University

Complete Coding Genome Sequence Of A Novel Porcine Reproductive And Respiratory Syndrome Virus 2 Restriction Fragment Length Polymorphism 1-4-4 Lineage 1c Variant Identified In Iowa, Usa, Giovani Trevisan, Ganwu Li, Cesar A.A. Moura, Katie Coleman, Pete Thomas, Jianqiang Zhang, Phillip Gauger, Michael Zeller, Daniel C.L. Linhares

Veterinary Diagnostic and Production Animal Medicine Publications

A porcine reproductive and respiratory syndrome virus 2 strain was identified in lung samples from nursery piglets associated with a 17.15% mortality rate on a swine farm in Iowa. Open reading frame 5 (ORF5) sequencing indicated that this strain is a restriction fragment length polymorphism (RFLP) 1-4-4 lineage 1C variant strain, and its complete coding genome sequence was determined.


Yeast Particle Encapsulation Of Scaffolded Terpene Compounds For Controlled Terpene Release, Ernesto R. Soto, Florentina Rus, Hanchen Li, Carli Garceau, Jeffrey Chicca, Mostafa Elfawal, David Gazzola, Martin K. Nielsen, Joseph F. Urban Jr., Raffi V. Aroian, Gary R. Ostroff 2021 University of Massachusetts

Yeast Particle Encapsulation Of Scaffolded Terpene Compounds For Controlled Terpene Release, Ernesto R. Soto, Florentina Rus, Hanchen Li, Carli Garceau, Jeffrey Chicca, Mostafa Elfawal, David Gazzola, Martin K. Nielsen, Joseph F. Urban Jr., Raffi V. Aroian, Gary R. Ostroff

Maxwell H. Gluck Equine Research Center Faculty Publications

Terpenes are naturally occurring compounds produced by plants that are of great commercial interest in the food, agricultural, cosmetic, and pharmaceutical industries due to their broad spectra of antibacterial, antifungal, anthelmintic, membrane permeation enhancement, and antioxidant biological activities. Applications of terpenes are often limited by their volatility and the need for surfactants or alcohols to produce stable, soluble (non-precipitated) products. Yeast particles (YPs) are hollow, porous microspheres that have been used for the encapsulation of terpenes (YP terpenes) by passive diffusion of terpenes through the porous YP cell walls. We here report the development of a second generation YP encapsulated ...


Comparison Of Mycoplasma Hyopneumoniae Response To Infection By Route Of Exposure, Ana Paula S. Poeta Silva, Thaire P. Marostica, Aric McDaniel, Bailey L. Arruda, Carmen Alonso, Rachel J. Derscheid, Paul Yeske, Daniel C.L. Linhares, Luis Giménez-Lirola, Locke A. Karriker, Eduardo Fano, Jeffrey J. Zimmerman, Maria J. Clavijo 2021 Iowa State University

Comparison Of Mycoplasma Hyopneumoniae Response To Infection By Route Of Exposure, Ana Paula S. Poeta Silva, Thaire P. Marostica, Aric Mcdaniel, Bailey L. Arruda, Carmen Alonso, Rachel J. Derscheid, Paul Yeske, Daniel C.L. Linhares, Luis Giménez-Lirola, Locke A. Karriker, Eduardo Fano, Jeffrey J. Zimmerman, Maria J. Clavijo

Veterinary Diagnostic and Production Animal Medicine Publications

Mycoplasma hyopneumoniae (MHP) is a concern both for pig well-being and producer economic viability. In the absence of fully protective health interventions, producers rely on controlled exposure to induce an immune response in pigs and minimize the clinical outcomes of MHP infection in pig populations. This study compared the effect of route of exposure on MHP infection, antibody response, clinical signs, and pathology. Six-week-old MHP-negative pigs (n = 78) were allocated to negative control (n = 6) or one of three MHP exposure routes: intratracheal (n = 24, feeding catheter), intranasal (n = 24, atomization device), and aerosol (n = 24, fogger). Body weight ...


Intrauterine Blood Plasma Platelet-Therapy Mitigates Persistent Breeding-Induced Endometritis, Reduces Uterine Infections, And Improves Embryo Recovery In Mares, Lorenzo G. T. M. Segabinazzi, Igor F. Canisso, Giorgia Podico, Lais L. Cunha, Guilherme Novello, Michael F. Rosser, Shavanh C. Loux, Fabio S. Lima, Marco A. Alvarenga 2021 University of Illinois Urbana Champaign

Intrauterine Blood Plasma Platelet-Therapy Mitigates Persistent Breeding-Induced Endometritis, Reduces Uterine Infections, And Improves Embryo Recovery In Mares, Lorenzo G. T. M. Segabinazzi, Igor F. Canisso, Giorgia Podico, Lais L. Cunha, Guilherme Novello, Michael F. Rosser, Shavanh C. Loux, Fabio S. Lima, Marco A. Alvarenga

Maxwell H. Gluck Equine Research Center Faculty Publications

Microorganisms, including pathogenic or opportunistic bacteria and fungi, may gain access to the uterus during breeding, and infectious endometritis plays a major role in equine subfertility. This study aimed to assess the post-breeding inflammatory response, endometrial culture, and embryo recovery of mares susceptible to persistent breeding-induced endometritis (PBIE) treated with plasma-rich (PRP) or -poor (PPP) plasma. Mares (n = 12) susceptible to PBIE had three cycles randomly assigned to receive intrauterine infusions of lactate ringer solution (LRS, control), or autologous PRP or PPP pre- (−48 and −24 h) and post-breeding (6 and 24 h). Mares were bred with fresh semen from ...


Longitudinal Piglet Sampling In Commercial Sow Farms Highlights The Challenge Of Prrsv Detection, Marcelo Nunes de Almeida, Cesar A. Corzo, Jeffrey J. Zimmerman, Daniel C. L. Linhares 2021 Iowa State University

Longitudinal Piglet Sampling In Commercial Sow Farms Highlights The Challenge Of Prrsv Detection, Marcelo Nunes De Almeida, Cesar A. Corzo, Jeffrey J. Zimmerman, Daniel C. L. Linhares

Veterinary Diagnostic and Production Animal Medicine Publications

Background: Processing fluids (PF) and family oral fluids (FOF) are population-based surveillance samples collected from 2- to 5-day-old piglets and due-to-wean piglets, respectively. Although they are described for the surveillance of PRRSV in sows and piglet populations at processing and weaning, there is limited information on their use in commercial herds. This observational study described PRRSV RNA detection over time in PF, FOF, and piglet serum collected from farrowing groups in commercial breeding farms with the objective of achieving robust, practical, and effective PRRSV surveillance protocols. Weekly PF (an aggregate sample of all litters processed in a week from each ...


Pseudorabies (Aujeszky's Disease) Virus Dna Detection In Swine Nasal Swab And Oral Fluid Specimens Using A Gb-Based Real-Time Quantitative Pcr, Ting-Yu Cheng, Alexandra Henao-Diaz, Korakrit Poonsuk, Alexandra Buckley, Albert van Geelen, Kelly Lager, Karen M. Harmon, Phillip Gauger, Chong Wang, Aruna Ambagala, Jeffrey J. Zimmerman, Luis Giménez-Lirola 2021 Iowa State University

Pseudorabies (Aujeszky's Disease) Virus Dna Detection In Swine Nasal Swab And Oral Fluid Specimens Using A Gb-Based Real-Time Quantitative Pcr, Ting-Yu Cheng, Alexandra Henao-Diaz, Korakrit Poonsuk, Alexandra Buckley, Albert Van Geelen, Kelly Lager, Karen M. Harmon, Phillip Gauger, Chong Wang, Aruna Ambagala, Jeffrey J. Zimmerman, Luis Giménez-Lirola

Veterinary Diagnostic and Production Animal Medicine Publications

In this study, the detection of PRV DNA in nasal swab (n = 440) and oral fluid (n = 1,545) samples collected over time from experimentally PRV vaccinated and/or PRV inoculated pigs (n = 40) was comparatively evaluated by real-time PCR. Serum samples (n = 440) were tested by PRV gB/gE blocking ELISAs (Pseudorabies Virus gB Antibody Test Kit and Pseudorabies Virus gpI Antibody Test Kit, IDEXX Laboratories, Inc., Westbrook, ME) to monitor PRV status over time. Following exposure to a gE-deleted modified live vaccine (Ingelvac® Aujeszky MLV, Boehringer Ingelheim, Ridgefield, CT) and/or a wild-type virus (3 CR Ossabaw), PRV ...


Genomics Of Response To Prrsv In Purebred And Crossbred Sows: Antibody Response And Performance Following Natural Infection Versus Vaccination, Leticia P. Sanglard, Felipe M. W. Hickmann, Yijian Huang, Kent A. Gray, Daniel C. L. Linhares, Jack C. M. Dekkers, Megan C. Niederwerder, Rohan L. Fernando, Joseph Braccini Neto, Nick V. L. Serão 2021 Iowa State University

Genomics Of Response To Prrsv In Purebred And Crossbred Sows: Antibody Response And Performance Following Natural Infection Versus Vaccination, Leticia P. Sanglard, Felipe M. W. Hickmann, Yijian Huang, Kent A. Gray, Daniel C. L. Linhares, Jack C. M. Dekkers, Megan C. Niederwerder, Rohan L. Fernando, Joseph Braccini Neto, Nick V. L. Serão

Veterinary Diagnostic and Production Animal Medicine Publications

Antibody response, measured as sample-to-positive (S/P) ratio, to Porcine Reproductive and Respiratory Syndrome virus (PRRSV) following a PRRSV-outbreak (S/POutbreak) in a purebred nucleus and following a PRRSV-vaccination (S/PVx) in commercial crossbred herds have been proposed as genetic indicator traits for improved reproductive performance in PRRSV-infected purebred and PRRSV-vaccinated crossbred sows, respectively. In this study, we investigated the genetic relationships of S/POutbreak and S/PVx with performance at the commercial (vaccinated crossbred sows) and nucleus level (non-infected and PRRSV-infected purebred sows), respectively, and tested the effect of previously identified SNP for these indicator traits. Antibody response was ...


An Inactivated Bacterium (Paraprobiotic) Expressing Bacillus Thuringiensis Cry5b As A Therapeutic For Ascaris And Parascaris Spp. Infections In Large Animals, Joseph F. Urban, Martin K. Nielsen, David Gazzola, Yue Xie, Ethiopia Beshah, Yan Hu, Hanchen Li, Florentina Rus, Kelly Flanagan, Austin Draper, Sridhar Vakalapudi, Robert W. Li, Gary R. Ostroff, Raffi V. Aroian 2021 U.S. Department of Agriculture

An Inactivated Bacterium (Paraprobiotic) Expressing Bacillus Thuringiensis Cry5b As A Therapeutic For Ascaris And Parascaris Spp. Infections In Large Animals, Joseph F. Urban, Martin K. Nielsen, David Gazzola, Yue Xie, Ethiopia Beshah, Yan Hu, Hanchen Li, Florentina Rus, Kelly Flanagan, Austin Draper, Sridhar Vakalapudi, Robert W. Li, Gary R. Ostroff, Raffi V. Aroian

Maxwell H. Gluck Equine Research Center Faculty Publications

Ascaris and Parascaris are important parasites in the family Ascarididae, large, ubiquitous intestinal-dwelling nematodes infecting all classes of vertebrates. Parasitic nematode drug resistance in veterinary medicine and drug recalcitrance in human medicine are increasing worldwide, with few if any new therapeutic classes on the horizon. Some of these parasites are zoonotic, e.g., Ascaris is passed from humans to pigs and vice versa. The development of new therapies against this family of parasites would have major implications for both human and livestock health. Here we tested the therapeutic ability of a paraprobiotic or dead probiotic that expresses the Bacillus thuringiensis ...


“Adopt-A-Tissue” Initiative Advances Efforts To Identify Tissue-Specific Histone Marks In The Mare, N. B. Kingsley, Natasha A. Hamilton, Gabriella Lindgren, Ludovic Orlando, Ernest Bailey, Samantha Brooks, Molly McCue, Ted S. Kalbfleisch, James N. MacLeod, Jessica L. Petersen, Carrie J. Finno, Rebecca R. Bellone 2021 University of California, Davis

“Adopt-A-Tissue” Initiative Advances Efforts To Identify Tissue-Specific Histone Marks In The Mare, N. B. Kingsley, Natasha A. Hamilton, Gabriella Lindgren, Ludovic Orlando, Ernest Bailey, Samantha Brooks, Molly Mccue, Ted S. Kalbfleisch, James N. Macleod, Jessica L. Petersen, Carrie J. Finno, Rebecca R. Bellone

Maxwell H. Gluck Equine Research Center Faculty Publications

No abstract provided.


Visualization And Application Of Disease Diagnosis Codes For Population Health Management Using Porcine Diseases As A Model, Giovani Trevisan, Kent J. Schwartz, Eric R. Burrough, Bailey Arruda, Rachel J. Derscheid, Michael C. Rahe, Edison de Souza Magalhães, Marcelo N. Almeida, Rodger G. Main, Daniel C. L. Linhares 2021 Iowa State University

Visualization And Application Of Disease Diagnosis Codes For Population Health Management Using Porcine Diseases As A Model, Giovani Trevisan, Kent J. Schwartz, Eric R. Burrough, Bailey Arruda, Rachel J. Derscheid, Michael C. Rahe, Edison De Souza Magalhães, Marcelo N. Almeida, Rodger G. Main, Daniel C. L. Linhares

Veterinary Diagnostic and Production Animal Medicine Publications

Accurate and timely results of diagnostic investigations and laboratory testing guide clinical interventions for the continuous improvement of animal health and welfare. Infectious diseases can severely limit the health, welfare, and productivity of populations of animals. Livestock veterinarians submit thousands of samples daily to veterinary diagnostic laboratories (VDLs) for disease diagnosis, pathogen monitoring, and surveillance. Individual diagnostic laboratory reports are immediately useful; however, aggregated historical laboratory data are increasingly valued by clinicians and decision-makers to identify changes in the health status of various animal populations over time and geographical space. The value of this historical information is enhanced by visualization ...


Generation Of A Biobank From Two Adult Thoroughbred Stallions For The Functional Annotation Of Animal Genomes Initiative, Callum G. Donnelly, Rebecca R. Bellone, Erin N. Hales, Annee Nguyen, Scott A. Katzman, Ghislaine A. Dujovne, Kelly E. Knickelbein, Felipe Avila, Ted S. Kalbfleisch, Elena Giulotto, Nicole B. Kingsley, Jocelyn Tanaka, Elizabeth Esdaile, Sichong Peng, Anna Dahlgren, Anna Fuller, Michael J. Mienaltowski, Terje Raudsepp, Verena K. Affolter, Jessica L. Petersen, Carrie J. Finno 2021 University of California, Davis

Generation Of A Biobank From Two Adult Thoroughbred Stallions For The Functional Annotation Of Animal Genomes Initiative, Callum G. Donnelly, Rebecca R. Bellone, Erin N. Hales, Annee Nguyen, Scott A. Katzman, Ghislaine A. Dujovne, Kelly E. Knickelbein, Felipe Avila, Ted S. Kalbfleisch, Elena Giulotto, Nicole B. Kingsley, Jocelyn Tanaka, Elizabeth Esdaile, Sichong Peng, Anna Dahlgren, Anna Fuller, Michael J. Mienaltowski, Terje Raudsepp, Verena K. Affolter, Jessica L. Petersen, Carrie J. Finno

Maxwell H. Gluck Equine Research Center Faculty Publications

Following the successful creation of a biobank from two adult Thoroughbred mares, this study aimed to recapitulate sample collection in two adult Thoroughbred stallions as part of the Functional Annotation of the Animal Genome (FAANG) initiative. Both stallions underwent thorough physical, lameness, neurologic, and ophthalmic (including electroretinography) examinations prior to humane euthanasia. Epididymal sperm was recovered from both stallions immediately postmortem and cryopreserved. Aseptically collected full thickness skin biopsies were used to isolate, culture and cryopreserve dermal fibroblasts. Serum, plasma, cerebrospinal fluid, urine, and gastrointestinal content from various locations were collected and cryopreserved. Under guidance of a board-certified veterinary anatomic ...


Acute Corneal Hydrops Of Presumed Traumatic Origin: An Uncontrolled Case Series (Three Horses), Louise M. O'Leary, Lionel Sebbag, L. M. Moody, K. A. Diehl, Rachel A. Allbaugh 2021 Iowa State University

Acute Corneal Hydrops Of Presumed Traumatic Origin: An Uncontrolled Case Series (Three Horses), Louise M. O'Leary, Lionel Sebbag, L. M. Moody, K. A. Diehl, Rachel A. Allbaugh

Veterinary Clinical Sciences Publications

This case series describes acute corneal hydrops in three young horses. Due to similarities in the clinical appearance and progression of the disease with that which is reported in humans and cats with acute corneal hydrops, traumatic Descemet’s membrane rupture was suspected to be the underlying aetiology in these equine cases. The horses presented with acute severe corneal oedema with intrastromal bullae formation and anterior bulging of the corneal contour. Focal posterior corneal changes were also seen in two of three cases. Mild anterior uveitis was also present. Other causes of corneal oedema (e.g. glaucoma) were ruled out ...


Effect Of Prrsv Stability On Productive Parameters In Breeding Herds Of A Swine Large Integrated Group In Spain, D. Torrents, J. Miranda, Phillip C. Gauger, Alejandro Ramirez, Daniel C. L. Linhares 2021 Laboratorios Hipra S.A. and Iowa State University

Effect Of Prrsv Stability On Productive Parameters In Breeding Herds Of A Swine Large Integrated Group In Spain, D. Torrents, J. Miranda, Phillip C. Gauger, Alejandro Ramirez, Daniel C. L. Linhares

Veterinary Diagnostic and Production Animal Medicine Publications

Background In breeding herds, porcine reproductive and respiratory syndrome (PRRS) clinically manifests as increased abortions, number of stillbirths, and pre-weaning mortality, and as a direct consequence, results in a decrease of the number of piglets weaned per sow per year. Breeding farm classification according the PRRS virus (PRRSV) status (unstable or stable) is a key control strategy for this disease. The aim of this study was to evaluate the production improvement related to achieving a PRRSV stable status in breeding herds in Spain. For this purpose, epidemiological and productivity data were collected from a systematic PRRSV monitoring program in 35 ...


The Pelvic Flexure Separates Distinct Microbial Communities In The Equine Hindgut, Kailee J. Reed, Isabelle G. Z. Kunz, Jessica A. Scare, Martin K. Nielsen, Philip J. Turk, Robert J. Coleman, Stephen J. Coleman 2021 Colorado State University

The Pelvic Flexure Separates Distinct Microbial Communities In The Equine Hindgut, Kailee J. Reed, Isabelle G. Z. Kunz, Jessica A. Scare, Martin K. Nielsen, Philip J. Turk, Robert J. Coleman, Stephen J. Coleman

Maxwell H. Gluck Equine Research Center Faculty Publications

As hindgut fermenters, horses are especially dependent on the microbiota residing in their cecum and large intestines. Interactions between these microbial populations and the horse are critical for maintaining gut homeostasis, which supports proper digestion. The current project was motivated to determine if any features of the fecal microbiota are informative of the microbial communities from the cecum, ventral colon, or dorsal colon. Digesta from the cecum, ventral colon, dorsal colon and feces were collected from 6 yearling miniature horses. Microbial DNA was isolated and the microbiota from each sample was characterized by profiling the V4 region of the 16S ...


Gene Expression In Tonsils In Swine Following Infection With Porcine Reproductive And Respiratory Syndrome Virus, Qian Dong, Joan K. Lunney, Kyu-Sang Lim, Yet Nguyen, Andrew S. Hess, Hamid Beiki, Raymond R. R. Rowland, Kristen Walker, James M. Reecy, Christopher K. Tuggle, Jack C. M. Dekkers 2021 Iowa State University

Gene Expression In Tonsils In Swine Following Infection With Porcine Reproductive And Respiratory Syndrome Virus, Qian Dong, Joan K. Lunney, Kyu-Sang Lim, Yet Nguyen, Andrew S. Hess, Hamid Beiki, Raymond R. R. Rowland, Kristen Walker, James M. Reecy, Christopher K. Tuggle, Jack C. M. Dekkers

Animal Science Publications

Background: Porcine reproductive and respiratory syndrome (PRRS) is a threat to pig production worldwide. Our objective was to understand mechanisms of persistence of PRRS virus (PRRSV) in tonsil. Transcriptome data from tonsil samples collected at 42 days post infection (dpi) were generated by RNA-seq and NanoString on 51 pigs that were selected to contrast the two PRRSV isolates used, NVSL and KS06, high and low tonsil viral level at 42 dpi, and the favorable and unfavorable genotypes at a genetic marker (WUR) for the putative PRRSV resistance gene GBP5.

Results: The number of differentially expressed genes (DEGs) differed markedly between ...


Genomic Comparisons Of Persian Kurdish, Persian Arabian And American Thoroughbred Horse Populations, Navid Yousefi-Mashouf, Hassan Mehrabani-Yeganeh, Ardeshir Nejati-Javaremi, Ernest Bailey, Jessica L. Petersen 2021 University of Kentucky

Genomic Comparisons Of Persian Kurdish, Persian Arabian And American Thoroughbred Horse Populations, Navid Yousefi-Mashouf, Hassan Mehrabani-Yeganeh, Ardeshir Nejati-Javaremi, Ernest Bailey, Jessica L. Petersen

Maxwell H. Gluck Equine Research Center Faculty Publications

The present research aimed to characterize the Persian Kurdish horse population relative to the Persian Arabian and American Thoroughbred populations using genome-wide SNP data. Fifty-eight Kurdish, 38 Persian Arabian and 83 Thoroughbred horses were genotyped across 670,796 markers. After quality control and pruning to eliminate linkage disequilibrium between loci which resulted in 13,554 SNPs in 52 Kurdish, 24 Persian Arabian and 58 Thoroughbred horses, the Kurdish horses were generally distinguished from the Persian Arabian samples by Principal Component Analyses, cluster analyses and calculation of pairwise FST. Both Persian breeds were discriminated from the Thoroughbred. Pairwise FST ...


Investigation Of Equine In Vivo And In Vitro Derived Metabolites Of The Selective Androgen Receptor Modulator (Sarm) Acp-105 For Improved Doping Control, Malin Nilsson Broberg, Heather Knych, Ulf Bondesson, Curt Pettersson, Scott Stanley, Mario Thevis, Mikael Hedeland 2021 Uppsala University, Sweden

Investigation Of Equine In Vivo And In Vitro Derived Metabolites Of The Selective Androgen Receptor Modulator (Sarm) Acp-105 For Improved Doping Control, Malin Nilsson Broberg, Heather Knych, Ulf Bondesson, Curt Pettersson, Scott Stanley, Mario Thevis, Mikael Hedeland

Maxwell H. Gluck Equine Research Center Faculty Publications

Selective Androgen Receptor Modulators (SARMs) have anabolic properties but less adverse effects than anabolic androgenic steroids. They are prohibited in both equine and human sports and there have been several cases of SARMs findings reported over the last few years. The aim of this study was to investigate the metabolite profile of the SARM ACP-105 (2-chloro-4-[(3-endo)-3-hydroxy-3-methyl-8-azabicyclo[3.2.1]oct-8-yl]-3-methylbenzonitrile) in order to find analytical targets for doping control. Oral administration of ACP-105 was performed in horses, where blood and urine samples were collected over a time period of 96 h. The in vivo samples were compared ...


Piglet Immunization With A Spike Subunit Vaccine Enhances Disease By Porcine Epidemic Diarrhea Virus, Jieshi Yu, Chithra Sreenivasan, Tirth Uprety, Rongyuan Gao, Chen Huang, Ella J. Lee, Steven Lawson, Julie Nelson, Jane Christopher-Hennings, Radhey S. Kaushik, Eric Nelson, Diego G. Diel, Ben M. Hause, Feng Li, Dan Wang 2021 University of Kentucky

Piglet Immunization With A Spike Subunit Vaccine Enhances Disease By Porcine Epidemic Diarrhea Virus, Jieshi Yu, Chithra Sreenivasan, Tirth Uprety, Rongyuan Gao, Chen Huang, Ella J. Lee, Steven Lawson, Julie Nelson, Jane Christopher-Hennings, Radhey S. Kaushik, Eric Nelson, Diego G. Diel, Ben M. Hause, Feng Li, Dan Wang

Maxwell H. Gluck Equine Research Center Faculty Publications

Immunization with an insect cell lysate/baculovirus mixture containing recombinant porcine epidemic diarrhea virus (PEDV) spike protein induced high levels of neutralizing antibodies in both mice and piglets. However, immunization of piglets with this vaccine resulted in enhancement of disease symptoms and virus replication in vaccine recipients exposed to PEDV challenge. Thus, these observations demonstrate a previously unrecognized challenge of PEDV vaccine research, which has important implications for coronavirus vaccine development.


Trends In The Percentage Of Doses Of Modified Live, Killed, And Combination Respiratory Viral Vaccines Administered To Beef Calves Offered For Sale In Summer Video Auctions From 2000 Through 2018, M. J. Smith, K. E. Fike, M. E. King, E. D. McCabe, G. M. Rogers, K. G. Odde 2021 Kansas State University

Trends In The Percentage Of Doses Of Modified Live, Killed, And Combination Respiratory Viral Vaccines Administered To Beef Calves Offered For Sale In Summer Video Auctions From 2000 Through 2018, M. J. Smith, K. E. Fike, M. E. King, E. D. Mccabe, G. M. Rogers, K. G. Odde

Kansas Agricultural Experiment Station Research Reports

Objective: The objective of the study was to identify trends in the percentage of doses of modified live, killed, and combination respiratory viral vaccines administered to lots of beef calves.

Study Description: Nineteen years of data (2000–2018) from a livestock video auction service (Superior Livestock Auction, Fort Worth, TX) were analyzed to quantify trends in percentage of doses of respiratory viral vaccine administered to beef calves. Named respiratory viral vaccines were classified into three groups based on the antigens they contained: all modified live antigens, all killed antigens, and combination of modified live and killed antigens. The Cochran-Armitage Trend ...


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