Results

101 - 125 of 1922
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Juvenile pink salmon, Oncorhynchus gorbuscha (Walbaum), in the Broughton Archipelago region of western Canada were surveyed over 2 years for sea lice (Lepeophtheirus salmonis and Caligus clemensi), gross and microscopic lesions and evidence of infections with viruses and bacteria. The 1071 fish exam...
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A national surveillance programme for Salmonella Dublin, based on regular bulk-tank milk antibody screening and movements of cattle, was initiated in Denmark in 2002. From 2002 to end of 2009 the prevalence of test-positive dairy herds was reduced from 26% to 10%. However, new infections and spread ...
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A parasite control programme was designed for > 1200 exotic ungulates maintained in mixed species enclosures at the San Diego Wild Animal Park. Three strategically-timed anthelmintic treatments were given during 1988-1989, and their success was measured by monitoring faecal egg counts before and aft...
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Fortification of plants with selenium (Se) has been used to increase the Se intake of humans and farm animals but its use for correction of Se deficiency in horses has received little attention. The aims of this study were to evaluate the effect of Se-enriched fertilizer application on the Se concen...
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A pig farm of 6000 weaning to market age pigs had a mortality rate of 2.8% in October 1989 and 1.9% in April 1990. Four pigs were examined PM. All pigs had pulmonary haemorrahage with patchy necrosis and fibrinous pleuritis which was seen, on histological examiantion, as severe haemorrhagic and necr...
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The 10-point Milk and Dairy Beef Quality Assurance Program was developed collaboratively by the National Milk Producers Federation and the American Veterinary Medical Association and is designed to promote and document the responsible use of antibiotics in the dairy industry. One area of emphasis in...
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Nine of ten 13-month-old Aberdeen Angus bulls, injected with 0.25 ml of a sclerosing agent (3.6% formaldehyde in 90% ethanol) in the caudae epididymes, developed epididymitis after nine days. Semen samples collected after 40 days contained numerous motile spermatozoa in one sample, and small numbers...
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Serological responses to A. pleuropneumoniae serovar 7 infection were monitored by ELISA in a cohort of 66 pigs between weaning and market. Antibody concentrations were high (63/65 seropositive) at 4 weeks of age but declined to low levels from 8 to 12 weeks. Mean antibody concn rose significantly b...
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The authors evaluated existing list frames for disease surveillance by a telephone survey of 50 producers in Tulare county. No single ideal list frame existed, but the list frame of the Statistical Reporting Service, which included only 54% of the surveyed herds and 86% of the breeding swine within ...
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Testing of composite fecal (environmental) samples from high traffic areas in dairy herds has been shown to be a cost-effective and sensitive method for classification of herd status for Mycobacterium avium subsp. paratuberculosis (MAP). In the National Animal Health Monitoring System's (NAHMS) Dair...
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The primary method of spread for S agalactiae and S aureus is from cow to cow, so prevention focuses on within and between herd biosecurity to reduce or eliminate the reservoir of infection. S agalactiae is an obligate pathogen of the mammary gland, whereas S aureus is more widespread on other cow b...
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Objective: To assess the feasibility of a serum-based test using infrared spectroscopy to identify a subpopulation of mares at risk of producing foals susceptible to failure of passive transfer of immunity (FPT) because of mare-associated factors.; Materials and Methods: Serum was collected from pos...
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Biomass burning in indoor environments has been highlighted as a major cause of respiratory morbidity for women and children in low-income countries. Inexpensive technological innovations which reduce such exposures are needed. This study evaluated the impact of low tech compost digesters, which gen...
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The distribution, clinical signs, diagnosis, treatment, and prevention and control of Babesia gibsoni infections in dogs are reviewed. This disease affects wild and domestic canids in Asia, Africa, Europe, the Middle East and North America. Common clinical signs include anaemia, pyrexia, anorexia, l...
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In 1975, Fagan published a nomogram to help practitioners determine, without the use of a calculator or computer, the probability of a patient truly having a condition of interest given a particular test result. Nomograms are very useful for bedside interpretations of test results, as no test is per...
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The effects of selenium (Se) supplementation and source on equine immune function have not been extensively studied. This study examined the effects of oral Se supplementation and Se source on aspects of innate and adaptive immunity in horses. Fifteen horses were assigned to 1 of 3 groups (5 horses/...
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Milk from 172 commercial cows with mild to moderate clinical mastitis was tested with 5 antibiotic residue detection assay systems. 100 cows were treated with 1 of 2 intramammary β-lactam antibiotics and the remaining 72 cows were treated with intramuscular oxytocin. Milk samples were collected pre...
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During the last 30 years, modelling has increasingly played an important role in improving the efficiency of agricultural production systems. In the case of vector-borne diseases, most of the approaches have focused around calculus methods to describe the dynamics of the interactions of host and...
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Eqwise is the one stop source for the horse rider, trainer, owner and veterinarian. It provides a range of material and modules that are of a general nature and are designed to improve knowledge and awareness of equine health and welfare issues.
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This study evaluated test characteristics of environmental culture (EC) for the detection of Mycobacterium avium subspecies paratuberculosis (MAP) in 32 herds over a 2-year period. Individual fecal samples were collected every 6 mo and environmental samples every 3 mo. Individual fecal culture was p...
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UNIRED: PROYECTO PADRINAZGO PUBLICACIONES PERIODICAS ARGENTINAS. Título (A): Primera etapa en el desarrollo de un sistema de información geográfica (SIG) aplicada a la vigilancia epidemiológica: comunicación, pp. 331. Autor Personal (A): Sanchez, J.; Piscitelli, Hernán Gustavo; Severina, W.; L...
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