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126 - 150 of 262
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Toxoplasma gondii is associated with morbidity and mortality in a variety of marine mammals, including fatal meningoencephalitis in the southern sea otter (Enhydra lutris nereis). The source(s) of T. gondii infection and routes of transmission in the marine environment are unknown. We hypothesise th...
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The prevalence of equine adenovirus 1 (EAdV1) in the nasopharyngeal sections of healthy neonatal foals and horses was compared with that of hospitalized foals using an EAdV1-specific PCR assay. Nasopharyngeal swabs (NS) were obtained from 15 hospitalized foals, 12 apparently normal foals and their d...
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The objectives of this study were to estimate the prevalence of equine herpesviruses (EHV) 1-5 in the nasal secretions (NS) of a cohort of 12 mares and their foals from birth to 6 months of age, estimate the prevalence of EHV-1-5 infection of peripheral blood mononuclear cells (PBMC) of selected foa...
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Three groups of newborn Hereford-Angus crossbred beef calves were used to study whether parenteral administration of selenium to calves and the amount of forage and protein provided to their dams affects unadjusted body weight, adjusted 205-day body weight, and average daily gain (ADG). 55 calves we...
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Thoroughbred racehorses in California that were destroyed because of a complete humeral or pelvic fracture were investigated to determine whether a two-month or longer period without official high-speed workouts (lay-up) is associated with humeral or pelvic fracture. Age, sex, activity, number of la...
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The report provided here contains a simplified set of diagnostic testing recommendations. These recommendations were developed on the basis of research funded by the USDA-Animal and Plant Health Inspection Service-Veterinary Services through a cooperative agreement. The report is intended to provide...
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An ELISA was developed for the detection of antibodies against channel catfish virus (CCV) in the serum of channel catfish Ictalurus punctatus. The ELISA was used to test sera from 20 waterborne CCV-exposed juvenile channel catfish and 10 unexposed channel catfish for antibodies to CCV. Each serum w...
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In a survey of gynaecological lesions in female zoo felids conducted to determine if the widely used progestin contraceptive melengestrol acetate (MGA) had adverse effects, numerous leiomyomas and leiomyosarcomas were detected. This current study aimed to characterize the morphologic features of the...
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Correct classification of the true status of herds is an important component of epidemiologic studies and animal disease-control programs. We review theoretical aspects of herd-level testing through consideration of test performance (herd-level sensitivity, specificity and predictive values), the fa...
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Objective - To determine sensitivity and specificity of western blot testing (WBT) of CSF and serum for diagnosis of equine protozoal myeloencephalitis (EPM) in horses with and without neurologic abnormalities. Design - Prospective investigation. Animals - 65 horses with and 169 horses without neuro...
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Objective - To estimate cat population size, management, and outside faecal deposition and evaluate attitudes of cat owners and nonowners to stray animal control, water pollution, and wildlife protection. Design - Cross-sectional survey. Sample Population - 294 adult residents of Cayucos, Los Osos, ...
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In May 1996, 150 grower pigs in 5 California counties were given a selenium-contaminated feed distributed by a single feed company. Feed samples from 20 herds had a mean selenium concentration of 121.7 ppm dry weight (range, 22.1-531 ppm). In San Luis Obispo County, 52 pigs in 24 herds were exposed ...
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Horses admitted to the UC Davis Veterinary Medical Teaching Hospital between 1 July 1992 and 30 June 1994 were studied to determine associations between horse demographics, horse-management factors, and equine C. pseudotuberculosis infection in California. 134 case horses were evaluated, and 800 con...
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Patterns of temporal or spatial clustering of C. pseudotuberculosis infections were investigated in 134 infected horses compared with 800 control horses, randomly selected from all non-case horses examined at a veterinary medical teaching hospital, between July 1, 1992, and June 30, 1994. Admission ...
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The objectives of this study were to evaluate the accuracy of the indirect fluorescent antibody test (IFAT) using serum and cerebrospinal fluid (CSF) of horses naturally and experimentally infected with Sarcocystis neurona, to assess the correlation between serum and CSF titres, and to determine the...
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Herd size is frequently studied as a risk factor for swine diseases, yet the biological rationale for a reported association with herd size (whether positive or negative) is rarely adequately discussed in published epidemiological studies. Biologically plausible reasons for a positive association be...
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Progeny from six different spawns of white sturgeon broodstock were monitored for 20 months (January 1997 to August 1998) in a commercial white sturgeon hatchery in North Carolina, USA for occurrence of outbreaks of white sturgeon iridovirus (WSIV) and white sturgeon herpesvirus-2 (WSHV-2). Five WSI...
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Objective - To assess concurrently the effects of moderate ligamentous suspensory apparatus injury (MLSAI), racing-speed exercise, and horseshoe characteristics on risk of catastrophic suspensory apparatus failure (SAF) or metacarpal condylar fracture (CDY) in forelimbs of racehorses. Sample populat...
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To investigate the association between genital bacterial infection and urogenital carcinoma in California sea lions (Zalophus californianus), vaginal and preputial swabs for bacterial isolation were taken from 148 free-ranging and 51 stranded California sea lions including 16 animals with urogenital...
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A serum indirect fluorescent antibody test (IFAT) was compared with a Western blot (WB) and a modified Western blot (mWB) for diagnosis of equine protozoal myeloencephalitis (EPM). Using receiver-operating characteristic (ROC) analysis, the area under the curve of the IFAT was greater than the area ...
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Objective - To assess the use of CSF testing with an indirect fluorescent antibody test (IFAT) for diagnosis of equine protozoal myeloencephalitis (EPM) caused by Sarcocystis neurona. Sample Population - Test results of 428 serum and 355 CSF samples from 182 naturally exposed, experimentally infecte...
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A prospective cohort study was conducted to determine management, fish, and environmental risk factors for increased mortality and an increased proportion of runts for white sturgeon exposed to white sturgeon iridovirus (WSIV) and white sturgeon herpesvirus-2 (WSHV-2). The study was conducted betwee...
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The relationship between intensive racing and training schedules and risk of either catastrophic musculoskeletal injury (CMI) or lay-up from racing in California Thoroughbreds was investigated. Thoroughbred racehorses that sustained a CMI during racing or training and either were subsequently destro...