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1987 Full-Text Articles 3057 Authors 124459 Downloads 21 Institutions

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1987 full-text articles. Page 1 of 29.

Impacts From The Use Of Antibiotics In Livestock: Methods Of Transmission Of Antibiotic Resistance From Livestock To Humans, Kristin M. Walden 2016 Augustana College, Rock Island Illinois

Impacts From The Use Of Antibiotics In Livestock: Methods Of Transmission Of Antibiotic Resistance From Livestock To Humans, Kristin M. Walden

Biology: Student Scholarship & Creative Works

Antibiotic use in livestock production has been around since the 1950s. Antibiotic feed is used in livestock and other meat producing animals for three reasons: illness prevention, illness treatment, and growth promotion. Unfortunately, since the time that antibiotics were first invented, antibiotic resistant bacteria have become a threat to public health. There are many studies showing methods of transmission of antibiotic resistance from livestock to humans. Antibiotic resistance can spread from livestock to soil, water, insects, and food, which ultimately comes into contact with humans. A proposed study to measure antibiotic resistance when eliminating antibiotic feed will provide a hypothesis ...


Studies On The Prevalence And Control Of Parasitic Helminths In "Natural" Laying Hens, Brittany R. Weir 2016 University of Arkansas, Fayetteville

Studies On The Prevalence And Control Of Parasitic Helminths In "Natural" Laying Hens, Brittany R. Weir

Animal Science Undergraduate Honors Theses

One societal trend that has been gaining much traction and popularity since the 21st century began is “organic” and/or “natural” food products. In 1999, the global market accounted for $15.2 billion dollars worth of organic food and drink, compared to the market in 2014 where we consumed $80 billion dollars worth (Willer et. al, 2016). With “natural” production of food animals however, “natural” parasite transmission may be a consequence. To that end, this experiment examines the prevalence of helminths in 110 “natural” laying hens from three regional farms and the efficacies of fenbendazole, piperazine, and levamisole on ...


Association Of Different Iowa Livestock Truck Wash Stations Service Levels With Enterobacteriaceae Counts, Amber Danielson, Samaneh Azarpajouh, Anna Johnson, James Dickson, Locke Karriker, Rodney Baker, Christopher Rademacher, Troy Bigelow, Kenneth Stalder 2016 Iowa State University

Association Of Different Iowa Livestock Truck Wash Stations Service Levels With Enterobacteriaceae Counts, Amber Danielson, Samaneh Azarpajouh, Anna Johnson, James Dickson, Locke Karriker, Rodney Baker, Christopher Rademacher, Troy Bigelow, Kenneth Stalder

Samaneh Azarpajouh

Data from eighteen different truck washes were used to compare the association of different service levels with Enterobacteriaceae counts. Service levels were classified into three different categories; prewash (n=78), post wash with disinfectant (n=78), and post wash without disinfectant (n=12). A total of 168 drag swabs were used for collection for the purpose of this study. Prewash services were defined as trailers before they were scraped out and washed. Post wash with or without disinfectant services were defined as after the trailers were washed and disinfectant was or was not applied. Prewash trailers tended to have higher ...


Therapeutic Neonatal Hepatic Gene Therapy In Mucopolysaccharidosis Vii Dogs, Katherine Parker Ponder, John Melniczek, Lingfei Xu, Margaret Weil, Thomas O'Malley, Patricia O'Donnell, Van Knox, Gustavo Aguirre, Hamutal Mazrier, N Ellinwood, Margaret Sleeper, Albert Maguire, Susan Volk, Robert Mango, Jean Zweigle, John Wolfe, Mark Haskins 2016 University of Pennsylvania

Therapeutic Neonatal Hepatic Gene Therapy In Mucopolysaccharidosis Vii Dogs, Katherine Parker Ponder, John Melniczek, Lingfei Xu, Margaret Weil, Thomas O'Malley, Patricia O'Donnell, Van Knox, Gustavo Aguirre, Hamutal Mazrier, N Ellinwood, Margaret Sleeper, Albert Maguire, Susan Volk, Robert Mango, Jean Zweigle, John Wolfe, Mark Haskins

Gustavo D. Aguirre, VMD, PhD

Dogs with mucopolysaccharidosis VII (MPS VII) were injected intravenously at 2–3 days of age with a retroviral vector (RV) expressing canine β-glucuronidase (cGUSB). Five animals received RV alone, and two dogs received hepatocyte growth factor (HGF) before RV in an attempt to increase transduction efficiency. Transduced hepatocytes expanded clonally during normal liver growth and secreted enzyme with mannose 6-phosphate. Serum GUSB activity was stable for up to 14 months at normal levels for the RV-treated dogs, and for 17 months at 67-fold normal for the HGF/RV-treated dog. GUSB activity in other organs was 1.5–60% of normal ...


Impact Of Carprofen Administration On Stress And Nociception Responses Of Calves To Cautery Dehorning, M. L. Stock, L. A. Barth, Nicholas K. Van Engen, Suzanne T. Millman, R. Gehring, Chong Wang, E. A. Voris, Larry W. Wulf, Lea Labeur, Walter H. Hsu, Johann F. Coetzee 2016 Iowa State University

Impact Of Carprofen Administration On Stress And Nociception Responses Of Calves To Cautery Dehorning, M. L. Stock, L. A. Barth, Nicholas K. Van Engen, Suzanne T. Millman, R. Gehring, Chong Wang, E. A. Voris, Larry W. Wulf, Lea Labeur, Walter H. Hsu, Johann F. Coetzee

Veterinary Diagnostic and Production Animal Medicine Publications

The objective of this study was to investigate the effects of carprofen administered immediately before cautery dehorning on nociception and stress. Forty Holstein calves aged approximately 6 to 8 wk old were either placebo treated and sham dehorned (n = 10) or cautery dehorned following administration of carprofen (1.4 mg/kg) subcutaneously (n = 10) or orally (n = 10) or a subcutaneous and oral placebo (n = 10) in a randomized, controlled trial. All animals were given a cornual nerve block using lidocaine before dehorning. Response variables including mechanical nociception threshold, ocular temperature, heart rate, and respiratory rate were measured before and ...


Cross-Sectional Analysis Of Salivary Cortisol And Cyathostome Infestation In Horses, Danielle L. Keating 2016 Otterbein University

Cross-Sectional Analysis Of Salivary Cortisol And Cyathostome Infestation In Horses, Danielle L. Keating

Honors Thesis Projects

With an increase in anthelmintic resistance and decreased efficacy of many commercial dewormers, understanding factors that contribute to parasite infestations in horses is integral to their management. The goal of this study was to look at the potential relationship between parasites and stress response by evaluating salivary cortisol levels and cyathostome egg shedding levels. Using a sample size of n = 200 horses from the state of Ohio, fecal and saliva samples were collected from each horse. Fecal egg counts were performed for each horse with a modified Stoll method, and saliva samples were tested with an enzyme-linked immunosorbent assay (ELISA ...


In Vivo-Expressed Proteins Of Virulent Leptospira Interrogans Serovar Autumnalis N2 Elicit Strong Igm Responses Of Value In Conclusive Diagnosis, Veerapandian Raja, Santhanam Shanmughapriya, Murugesan Kanagavel, Sergey Artiushin, Sridhar Velineni, John F. Timoney, Kalimuthusamy Natarajaseenivasan 2016 Bharathidasan University, India

In Vivo-Expressed Proteins Of Virulent Leptospira Interrogans Serovar Autumnalis N2 Elicit Strong Igm Responses Of Value In Conclusive Diagnosis, Veerapandian Raja, Santhanam Shanmughapriya, Murugesan Kanagavel, Sergey Artiushin, Sridhar Velineni, John F. Timoney, Kalimuthusamy Natarajaseenivasan

Gluck Equine Research Center Faculty Publications

Leptospirosis is a serious zoonosis that is underdiagnosed because of limited access to laboratory facilities in Southeast Asia, Central and South America, and Oceania. Timely diagnosis of locally distributed serovars of high virulence is crucial for successful care and outbreak management. Using pooled patient sera, an expression gene library of a virulent Leptospira interrogans serovar Autumnalis strain N2 isolated in South India was screened. The identified genes were characterized, and the purified recombinant proteins were used as antigens in IgM enzyme-linked immunosorbent assay (ELISA) either singly or in combination. Sera (n = 118) from cases of acute leptospirosis along with sera ...


Table Of Contents 2016 Nebraska Beef Cattle Report, 2016 University of Nebraska - Lincoln

Table Of Contents 2016 Nebraska Beef Cattle Report

Nebraska Beef Cattle Reports

No abstract provided.


Systematic Review Of The Magnitude Of Change In The Prevalence Of Salmonella And The Quantity Of Salmonella After Administration Of Pathogen Reduction Treatments On Pork Carcasses: Interim Summary, S. Totton, J. Glanville, R. Dzikamunhenga, J. Dickson, A. O'Connor 2016 University of Guelph

Systematic Review Of The Magnitude Of Change In The Prevalence Of Salmonella And The Quantity Of Salmonella After Administration Of Pathogen Reduction Treatments On Pork Carcasses: Interim Summary, S. Totton, J. Glanville, R. Dzikamunhenga, J. Dickson, A. O'Connor

International Conference on the Epidemiology and Control of Biological, Chemical and Physical Hazards in Pigs and Pork

Our objective was to review and describe the change in prevalence and/or quantity of Salmonella associated with pathogen reduction treatments (washes, sprays, etc.) on pork carcasses or carcass parts with skin in comparative experimental designs. This is an interim summary.


Viability Of Tritrichomonas Foetus Following The Freeze-Thaw Cycle Used For Freezing Bovine Semen, Patrick E. Phillips, Jacqueline N. Myers, Grant A. Dewell 2016 Iowa State University

Viability Of Tritrichomonas Foetus Following The Freeze-Thaw Cycle Used For Freezing Bovine Semen, Patrick E. Phillips, Jacqueline N. Myers, Grant A. Dewell

Animal Industry Report

Although past research has proven the organism, Tritrichomonas foetus, can survive freezing technologies utilized in the 1950’s, it is unknown if it can survive freezing in liquid nitrogen, the current freezing media for bovine semen. Live organisms were identified after thawing in fiveof the twelve straws evaluated. Between 0.5 and 6 liveorganisms were identified in the samples taken from thesestraws. The number of live organisms within each of these 0.5 mL straws was estimated to be between 25 and 300 live organisms. The ability of T. foetus organisms to survivecurrent freeze-thaw techniques for bovine semen suggeststhat artificial ...


Effects Of Label-Dose Permethrin Administration On Reproductive Function And Embryo Quality On Superovulated Beef Heifers, Tyler M. Dohlman, Marianna Jahnke, James West, Patrick E. Phillips, Patrick J. Gunn 2016 Iowa State University

Effects Of Label-Dose Permethrin Administration On Reproductive Function And Embryo Quality On Superovulated Beef Heifers, Tyler M. Dohlman, Marianna Jahnke, James West, Patrick E. Phillips, Patrick J. Gunn

Animal Industry Report

Commercial pyrethroid pour-ons are commonly appliedin cow-calf operations to eliminate the potential for insectborne diseases and to improve productivity. However,recent literature has focused on potential negativereproductive effects in the bull after exposure to pyrethroids.While the female bovine has been primarily neglected fromthe debated pyrethroid concern on reproduction, literature inmice and rats have reported potential endocrine disruptionof sex steroids resulting from pyrethroid exposure, withpotential detrimental effects on female fertility. Theobjective was to study the effects of a commercialpyrethroid-based pour-on product, permethrin, onreproductive performance in superovulated beef heifers byassessing steroid biosynthesis and embryo quality. It washypothesized that exposure to pyrethroid ...


Iowa Beef Center, Dan Loy, Patrick J. Gunn, Beth E. Doran, Russ Euken, Denise L. Schwab, Chris Clark, Joe Sellers, Patrick B. Wall, Garland R. Dahlke, Sherry Hoyer, Erika L. Lundy, Lee L. Schulz, Grant A. Dewell 2016 Iowa State University

Iowa Beef Center, Dan Loy, Patrick J. Gunn, Beth E. Doran, Russ Euken, Denise L. Schwab, Chris Clark, Joe Sellers, Patrick B. Wall, Garland R. Dahlke, Sherry Hoyer, Erika L. Lundy, Lee L. Schulz, Grant A. Dewell

Animal Industry Report

The Iowa Beef Center (IBC) is Iowa State University’s extension and outreach program to cattle producers. Our center has a dedicated group of faculty and staff from the College of Agriculture and Life Sciences, the College of Veterinary Medicine, and Iowa State University Extension and Outreach. We work together to develop and deliver the latest research-based information to improve the profitability and vitality of Iowa’s beef industry.


A Survey Of Dairy Farm Treatment Practices On Midwest Dairy Farms, Patrick J. Gorden, Cassandra Rice, Adlai Schuler 2016 Iowa State University

A Survey Of Dairy Farm Treatment Practices On Midwest Dairy Farms, Patrick J. Gorden, Cassandra Rice, Adlai Schuler

Animal Industry Report

Judicious antimicrobial use and antimicrobial stewardship have become buzzwords in production animal agriculture over the last few years. While these words are becoming expectations in the industry, very little is understood about their true meaning and the level of implementation of judicious use practices on dairy farms. We conducted an investigation on 85 dairy farms in the Midwest to document drug use practices on these farms. Our results indicate that most farms are doing an adequate job of implementing judicious practices, but there is room for improvement to meet expectations of regulatory officials and consumers.


Topical Flunixin Meglumine Effects On Pain Associated Biomarkers After Dehorning, Michael D. Kleinhenz, Nicholas K. Van Engen, Patrick J. Gorden, Johann F. Coetzee 2016 Iowa State University

Topical Flunixin Meglumine Effects On Pain Associated Biomarkers After Dehorning, Michael D. Kleinhenz, Nicholas K. Van Engen, Patrick J. Gorden, Johann F. Coetzee

Animal Industry Report

Twenty-four calves were dehorned and treated with either topical flunixin meglumine formulated for systemic absorption or a placebo. Biomarkers associated with pain were evaluated for up to 72 hour after the dehorning procedure. Plasma cortisol concentrations, 90 minutes post-dehorning, and mechanical nociception threshold at the control site were the only tested biomarkers where a significant difference was demonstrated. No other differences of biomarkers between the two dehorned groups were observed for any time points. Although this product is easy to dose and dispense, its effects on pain biomarkers appears to be negligible.


Association Of Different Iowa Livestock Truck Wash Stations Service Levels With Enterobacteriaceae Counts, Amber M. Danielson, Samaneh Azarpajouh, Anna Johnson, James S. Dickson, Locke A. Karriker, Rodney Baker, Christopher Rademacher, Troy T. Bigelow, Kenneth J. Stalder 2016 Iowa State University

Association Of Different Iowa Livestock Truck Wash Stations Service Levels With Enterobacteriaceae Counts, Amber M. Danielson, Samaneh Azarpajouh, Anna Johnson, James S. Dickson, Locke A. Karriker, Rodney Baker, Christopher Rademacher, Troy T. Bigelow, Kenneth J. Stalder

Animal Industry Report

Data from eighteen different truck washes were used to compare the association of different service levels with Enterobacteriaceae counts. Service levels were classified into three different categories; prewash (n=78), post wash with disinfectant (n=78), and post wash without disinfectant (n=12). A total of 168 drag swabs were used for collection for the purpose of this study. Prewash services were defined as trailers before they were scraped out and washed. Post wash with or without disinfectant services were defined as after the trailers were washed and disinfectant was or was not applied. Prewash trailers tended to have higher ...


Ring Test Evaluation Of The Detection Of Influenza A Virus In Swine Oral Fluids By Real-Time Reverse-Transcription Polymerase Chain Reaction And Virus Isolation, Christa K. Goodell, Jianqiang Zhang, Erin Strait, Karen Harmon, Devi Patnayak, Tracy Otterson, Marie Culhane, Jane Christopher-Hennings, Travis Clement, Pamela Leslie-Steen, Richard Hesse, Joe Anderson, Kevin Skarbek, Amy Vincent, Pravina Kitikoon, Sabrina Swenson, Melinda Jenkins-Moore, Jodi McGill, Rolf Rauh, William Nelson, Catherine O'Connell, Rohn Shah, Chong Wang, Rodger Main, Jeffery J. Zimmerman 2016 Iowa State University

Ring Test Evaluation Of The Detection Of Influenza A Virus In Swine Oral Fluids By Real-Time Reverse-Transcription Polymerase Chain Reaction And Virus Isolation, Christa K. Goodell, Jianqiang Zhang, Erin Strait, Karen Harmon, Devi Patnayak, Tracy Otterson, Marie Culhane, Jane Christopher-Hennings, Travis Clement, Pamela Leslie-Steen, Richard Hesse, Joe Anderson, Kevin Skarbek, Amy Vincent, Pravina Kitikoon, Sabrina Swenson, Melinda Jenkins-Moore, Jodi Mcgill, Rolf Rauh, William Nelson, Catherine O'Connell, Rohn Shah, Chong Wang, Rodger Main, Jeffery J. Zimmerman

Veterinary Diagnostic and Production Animal Medicine Publications

The probability of detecting influenza A virus (IAV) in oral fluid (OF) specimens was calculated for each of 13 assays based on real-time reverse-transcription polymerase chain reaction (rRT-PCR) and 7 assays based on virus isolation (VI). The OF specimens were inoculated with H1N1 or H3N2 IAV and serially diluted 10-fold (10(-1) to 10(-8)). Eight participating laboratories received 180 randomized OF samples (10 replicates × 8 dilutions × 2 IAV subtypes plus 20 IAV-negative samples) and performed the rRT-PCR and VI procedure(s) of their choice. Analysis of the results with a mixed-effect logistic-regression model identified dilution and assay as variables ...


Altered Plasma Pharmacokinetics Of Ceftiofur Hydrochloride In Cows Affected With Severe Clinical Mastitis, Patrick J. Gorden, Michael D. Kleinhenz, Larry W. Wulf, Butch KuKanich, Chang J. Lee, Chong Wang, Johann F. Coetzee 2016 Iowa State University

Altered Plasma Pharmacokinetics Of Ceftiofur Hydrochloride In Cows Affected With Severe Clinical Mastitis, Patrick J. Gorden, Michael D. Kleinhenz, Larry W. Wulf, Butch Kukanich, Chang J. Lee, Chong Wang, Johann F. Coetzee

Animal Industry Report

Ceftiofur is the most commonly used antimicrobial in lactating dairy cows. Recently, there has been an increase in the number of violative residues of ceftiofur in the tissues of cull dairy cows. This was the first project in a series of projects we will be completing aimed at characterizing the pharmacokinetics of ceftiofur in disease challenged animals. The results of this study indicate that diseased animals have lower plasma concentrations and altered pharmacokinetics compared to healthy animals. Future work will investigate the influence of altered pharmacokinetics on the presence of violative residues.


Tissue Restricted Splice Junctions Originate Not Only From Tissue-Specific Gene Loci, But Gene Loci With A Broad Pattern Of Expression, Matthew S. Hestand, Zheng Zeng, Stephen J. Coleman, Jinze Liu, James N. MacLeod 2015 University of Kentucky

Tissue Restricted Splice Junctions Originate Not Only From Tissue-Specific Gene Loci, But Gene Loci With A Broad Pattern Of Expression, Matthew S. Hestand, Zheng Zeng, Stephen J. Coleman, Jinze Liu, James N. Macleod

Gluck Equine Research Center Faculty Publications

Cellular mechanisms that achieve protein diversity in eukaryotes are multifaceted, including transcriptional components such as RNA splicing. Through alternative splicing, a single protein-coding gene can generate multiple mRNA transcripts and protein isoforms, some of which are tissue-specific. We have conducted qualitative and quantitative analyses of the Bodymap 2.0 messenger RNA-sequencing data from 16 human tissue samples and identified 209,363 splice junctions. Of these, 22,231 (10.6%) were not previously annotated and 21,650 (10.3%) were expressed in a tissue-restricted pattern. Tissue-restricted alternative splicing was found to be widespread, with approximately 65% of expressed multi-exon genes containing ...


How Microbiomes Can Feed The World: A Look Into Bovine Reproduction, Hannah Noel McDonald 2015 University of Tennessee, Knoxville

How Microbiomes Can Feed The World: A Look Into Bovine Reproduction, Hannah Noel Mcdonald

University of Tennessee Honors Thesis Projects

No abstract provided.


Development Of A Real-Time Pcr Assay For The Detection And Diagnosis Of Streptococcus Suis In Clinical Samples, Michael Welch 2015 Iowa State University

Development Of A Real-Time Pcr Assay For The Detection And Diagnosis Of Streptococcus Suis In Clinical Samples, Michael Welch

Honors Projects and Posters

Streptococcus suis is an important pathogenic bacteria known to cause meningitis and fibrinous polyserositis in swine. Several bacterial real-time polymerase chain reaction assays (qPCRs) have been developed for use at the Iowa State University Veterinary Diagnostic Laboratory (ISU VDL); however, qPCR protocols for the detection of S. suis were lacking. qPCR is often considered an appealing alternative to culture-based or immunoassay-based diagnostic methods because of its ability to rapidly test a large volume of samples with a high degree of target specificity. One hundred seventy-four clinical samples were obtained from the ISU VDL and were tested by qPCR targeting the ...


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