A5020898807- Animal Disease Management and Epidemiology
- Viral gastroenteritis research and epidemiology
- Vector-Borne Animal Diseases
- Reproductive Physiology in Livestock
- Animal Virus Infections Studies
- Genetic and phenotypic traits in livestock
- Animal health and immunology
- Microbial infections and disease research
- T-cell and Retrovirus Studies
- Plant and fungal interactions
- Clostridium difficile and Clostridium perfringens research
- Agriculture and Farm Safety
- Influenza Virus Research Studies
- Zoonotic diseases and public health
- Toxoplasma gondii Research Studies
- Herpesvirus Infections and Treatments
- Veterinary Practice and Education Studies
- Virus-based gene therapy research
- Pharmacological Effects and Assays
- Plant Micronutrient Interactions and Effects
- Bacteriophages and microbial interactions
- Agriculture Sustainability and Environmental Impact
- Effects of Environmental Stressors on Livestock
- Parasitic Infections and Diagnostics
- Agricultural Systems and Practices
South Dakota State University
2015-2024
South Dakota Department of Health
2016
Iowa State University
1992
ABSTRACT Eleven laboratories collaborated to determine the periodic prevalence of Salmonella in a population dogs and cats United States visiting veterinary clinics. Fecal samples (2,965) solicited from 11 geographically dispersed testing were collected 36 states between January 2012 April 2014 tested using harmonized method. The overall study (3 542) was <1%. (60 2,422) 2.5%. Diarrhea present only 55% positive dogs; however, 3.8% all diarrheic positive, compared with 1.8% nondiarrheic...
Late in 1991, an enveloped RNA virus (now called porcine reproductive and respiratory syndrome [PRRS] virus) was identified as the etiologic agent for mystery swine disease. In 1992, laboratory procedures diagnosis of this disease evolved rapidly, veterinary diagnosticians started applying these tests to field cases. This report is written from perspective utilizes 3 case studies define advantages disadvantages various available diagnostic PRRS test different clinical situations. The...
Porcine reproductive and respiratory syndrome virus (PRRSV) continues to be a major problem in the pork industry worldwide. The limitations of current PRRSV vaccines require development new generation vaccines. One key steps future vaccine is include markers for diagnostic differentiation vaccinated animals from those naturally infected with wild-type virus. Using cDNA infectious clone type 1 PRRSV, this study constructed recombinant green fluorescent protein (GFP)-tagged containing deletion...
Abstract Within 5 months after the earliest detection of human influenza A(H1N1)pdm09 virus, we found molecular and culture evidence virus in healthy US show pigs. The mixing humans pigs at swine shows possibly could further geographic cross-species spread A viruses.
Bacillus anthracis is a genetically monomorphic bacterium with little diversity to be expected during an outbreak. This study used more rapidly evolving genetic markers on outbreak samples ascertain diversity.Forty-seven isolates from B. the summer of 2005 in South Dakota were analysed using single nucleotide polymorphisms (SNP) and multi-locus VNTR analysis (MLVA). Results indicated that all strains belonged clonal lineage. However, four repeat (SNR) resolved these into six distinct...
After identifying a student with triple-reassortant swine influenza virus (SIV) infection and pig exposure at livestock event, we investigated whether others were infected if human-to-human transmission occurred.We conducted cohort study serosurvey among persons exposed to (1) event pigs, (2) other (3) the index case, (4) without or case exposure. Confirmed cases had respiratory specimens positive for SIV within 2 weeks of case's illness. Probable suspected illness any contact confirmed...
Abstract The objective of this study was to determine the impact beef production systems utilizing additive combinations growth promotant technologies on animal and carcass performance environmental outcomes. Crossbred steer calves (n =120) were stratified by birth date, weight, dam age assigned randomly one four treatments: 1) no technology (NT; control), 2) antibiotic treated (ANT; NT plus therapeutic antibiotics monensin tylosin), 3) implant (IMP; ANT a series 3 implants, 4) beta-agonist...
OBJECTIVE To determine herd-level risk factors for bovine respiratory disease (BRD) in nursing beef calves. DESIGN Matched case-control study. SAMPLE 84 cow-calf operations Nebraska, North Dakota, and South Dakota. PROCEDURES Case herds were that treated at least 5% of the calf crop BRD prior to weaning. Control < 0.5% Each case herd was matched with 2 control on basis veterinary practice enrollment year. Herd owners or managers interviewed by telephone, characteristics practices associated...
Severe disease and death in cows calves affected 1 of 3 separate groups (A, B, C) cattle on a commercial cow-calf operation.Clinical illness consisting severe watery bloody diarrhea, dehydration, weakness, adult group (group B). Salmonella enterica serotype Newport was recovered from tissues B.Despite supportive antimicrobial treatment cow mortality rate attributable to salmonellosis that 7.9% (32/407); calf 14.4% (52/361). None the Groups A or C died, those low. pooled fecal samples...
To assess the level of interest university students enrolled in veterinary science courses toward becoming a veterinarian, reasons supporting or discouraging their interest, when those attitudes were formed, and future plans for pursuing medicine as career.Cross-sectional study.585 South Dakota 2 over 6-year period.Each year, answered survey questions pertaining to background, plans.Most these desired become veterinarian at some time lives. Females more likely than males indicate current...
OBJECTIVE To estimate costs associated with prevention and treatment of bovine respiratory disease (BRD) in preweaned calves on US beef cow-calf operations. DESIGN Cross-sectional survey. SAMPLE 43 producers whose operations had a history BRD calves. PROCEDURES Mail electronic surveys were developed administered to Nebraska, North Dakota, South Dakota obtain information regarding treatment. Descriptive statistics generated. Mixed linear regression models used assess factors the vaccines,...
Summary Cryptosporidium spp. and Shiga toxin‐producing Escherichia coli strains ( STEC ) are important causes of human illness. Incidence rates these illnesses high in South Dakota compared to the USA as a whole. Direct animal contact has been identified possible route exposure for illnesses. Ruminant animals may carry subclinically, while young ruminants common sources zoonotic . patients with either or cryptosporidiosis during 2012 were interviewed regarding seven categories exposure: (i)...
Blackleg (Clostridium chauvoei infection) has long been recognized as a cause of death in calves grazing summer pastures. Clinical signs are not often observed affected due to the peracute nature disease, but may include fever, lameness, and swelling crepitation over large muscle groups, followed by collapse death. Typical gross histopathologic lesions these groups well-described gelatinous, gassy subcutaneous changes, along with well-defined necrosis. Areas necrosis can also be present...
A field trial was conducted on 10 herds of previously- vaccinated cows and heifers (n=1,567) to evaluate the reproductive effects prebreeding vaccination with either a modified-live virus (MLV) or chemically altered/inactivated (CA/IV] BHV-1/BVDV vaccine. Animals received single (cows) 2 injections (heifers) vaccine, final injection between 27 89 days before breeding, which consisted timed AI following 7-d CO-Synch + CIDR synchronization. Conception rates were greater in CA/IV vaccine group...
Our objective was to evaluate the effect of vaccination with an inactivated virus vaccine (IVV) or modified-live (MLV) on corpus luteum (CL). On d0, synchronized beef cows were treated MLV (n = 70; BoviShield Gold FP5VL5), IVV 16; ViraShield 6VL5HB), unvaccinated controls 5). Plasma collected from animals d0 and every other day through d22. analyzed for concentrations progesterone 15 cytokines. Between d10 d13, selected females 13) ovariectomized; slaughtered d15/16 obtain CL histological...
Twelve of 100 beef calves in central South Dakota had loss tail switches and tips the summer 2014. The problem was noticed July. Many were being raised to be show calves. All 12 affected lesions 3 suffering from early lameness. Chemical analysis demonstrating multiple ergopeptine alkaloids creep feed suggested ergotism caused by Claviceps spp., specifically C. purpurea. Rapid identification cause unusual distal extremity is important reduce animals financial losses owners.
A 2 yr study involving 9 herds of well-vaccinated cows and heifers (n = 1436) was conducted to evaluate whether a pre-breeding MLV or inactivated reproductive vaccine administered per label instructions had negative impacts on conception rates calving distribution compared non-vaccinated control (saline) group. Within herd, were blocked by parity date randomly assigned receive 1 the treatments (MLV Inactivated) saline (Control). All females synchronized with 7-d CO-Synch + CIDR protocol...