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1 - 25 of 1876
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Since the formation of Atlantic salmon aquaculture more than four decades ago, a consistent fish health and sustainability theme has been the management of sea lice, resulting in a significant scientific literature around Lepeophtheirus salmonis and Caligus spp. Despite these becoming among the most...
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When a perfect reference test (i.e. "gold standard") is not available, it is possible to obtain estimates of test sensitivity and specificity using "latent-class" methods. However, there are few widely available software programmes that allow the implementation of these procedures. The following art...
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Gastric cancers are a significant cause of morbidity worldwide. Epidemiological studies and animal models show that males have higher incidences of gastric cancers compared with females, suggesting that sex hormones may modulate gastric cancer risk. An animal model of the initiation phase of gastric...
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Quantitative information was collected through a Delphi survey on the most important clinical signs and risk factors for diagnosis of bovine anaplasmosis, babesiosis, cowdriosis, fasciolosis, parasitic gastroenteritis (PGE), schistosomosis, theileriosis and trypanosomosis, with the aim of compiling ...
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The recent detection of the invasive colonial tunicate Diplosoma listerianum in Havre- Aubert, Magdalen Islands (Quebec, Canada) in 2008, prompted the development of a molecular assay as a method to detect and monitor for the potential invasion of this species in Prince Edward Island. The aim of thi...
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Animal studies and epidemiological evidence suggest an association between prenatal exposure to drinking water with elevated nitrate (NO3-N) concentrations and incidence of congenital anomalies. This study used Geographic Information Systems (GIS) to derive individual-level prenatal drinking-water n...
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A field trial was conducted to determine the effect of premilking teat disinfection (predipping) on several measures of mastitis in a commercial dairy farm where the predominant organisms isolated from intramammary infections were coagulase negative Staphylococcus spp. Cows were randomly assigned to...
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The objective of this study was to quantify the relationship of the levels of antibodies to Ostertagia ostertagi in bulk-tank milk samples from Prince Edward Island (PEI) dairy farms to milk production and to herd-management practices potentially related to gastrointestinal nematode infections. The ...
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A case-control study was conducted to identify herd production, housing, and hygienic and therapeutic factors associated with Nocardia mastitis in dairy herds in Nova Scotia. The data were collected by on-farm interview with owners of 54 case and 54 control herds. Logistic regression was used to stu...
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A case-control study was conducted to compare the physical hoof properties of digits responsible for clinical lameness with those of other digits on the same cows and with those of equivalent digits on non-lame control cows. The control cows were herd-mates matched by age, breed and stage of lactati...
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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...
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Using random allocation, 92 clinically healthy dogs were restrained chemically using fentany/droperidol, and 71 using oxymorphone/acepromazine, for radiography. Questionnaires completed by the radiology department revealed no significant differences between the drug combinations either in effectiven...
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The epidemiology and importance of coagulase negative staphylococcal (CNS) mastitis in Prince Edward Island had not been documented. To investigate this, a cohort of 84 cows at seven farms were quarter sampled eight times over a lactation, commencing with samples taken prior to drying off in the pre...
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The muscle texture of 32 Atlantic salmon Salmo salar infected with Kudoa thyrsites was compared to the texture of 32 uninfected Atlantic salmon to determine the relationship of K. thyrsites with post mortem muscle deterioration or soft flesh. Flesh texture was evaluated objectively with an Instron t...
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The Mules operation practically eliminated fly-strike and the need for jetting in a Merino flock, while in "Comeback" sheep flystrike was considerably reduced and jetting requirements were halved. For both types of sheep crutching time and wool soiling were reduced. Although the operation ...
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Blood samples were collected from 145 goats >2years of age: 60 from the University farms and 74 and 12 goats from 2 farms which had a clinical history of caseous lymphadenitis. The synergistic haemolytic inhibition (SHI) test identified 36 goats that gave a positive reaction to caseous lymphadenitis...
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This paper examines two large national data sets collected over several years and contrasts the patterns of sea lice, Lepeophtheirus salmonis (Kroyer, 1837), infections, the use of treatments and the occurrence of chalimus peaks between Norwegian and Scottish farms. Infection levels in Scotland were...
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Five serological assays: the buffered plate antigen test, the standard tube agglutination test, the complement fixation test, the hemolysis-in-gel test and the indirect enzyme immunoassay were diagnostically evaluated. Test data consisted of results from 1208 cattle in brucellosis-free herds, 1578 c...
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Nine healthy mixed-breed dogs weighing between 15 and 28 kg were anaesthetized with 33% oxygen, 67% nitrous oxide and halothane. Oxygen flow rates of 10, 20 and 30 ml/kg per minute were administered with appropriate nitrous oxide flow rates for three consecutive 45-minute periods. Inspired oxygen co...
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Comparisons were made of the behaviour, physiology and meat quality of 24-week-old male veal calves (mean live weight 234 kg) that were slaughtered either at the veal unit (the control group) or following 3 h transportation at space allowances of either 0.7 or 0.95 m2 calf-1 and 1.5 h of lairage. Co...
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The behaviour of 2 groups of sheep was observed when they were placed in a pen on wooden slats and/or straw bedding for 48 h. When sheep were placed in the pen and not given a choice of slats and straw, the proportion of scans spent standing and lying by one group of sheep were not affected by floor...