The excretion of campylobacter,salmonellae andGiardia lamblia in the faeces of stray dogs     

A. G. Burnie  J. W. Simpson  D. Lindsay  R. S. Miles 《Veterinary research communications》1983,6(1):133-138

Faecal samples were collected from impounded stray dogs, classified as under or over six months of age, on their arrival in kennels and again 5–7 days later. The faeces were examined for the presence of campylobacters, salmonella andGiardia lamblia. No significant difference was found in the rate of isolation of these organisms between the two age groups. There was, however, a significant increase in the rate of isolation at days 5–7 compared with day 1. It is suggested that while dogs may acquire campylobacter infection in kennels, excretion of the organism may be intermittent and may be precipitated by stress. A low incidence of salmonellae andGiardia lamblia excretion was detected.  相似文献   

Pesticides in water: organochlorine insecticide residues in streams draining agricultural, urban-agricultural, and resort areas of Ontario, Canada--1971     

J R Miles  C R Harris 《Pesticides monitoring journal》1973,6(4):363-368

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What is your diagnosis? Hemivertebra in a boar     

Karriker LA  Schwartz KJ  Miles KG  Patterson AR 《Journal of the American Veterinary Medical Association》2006,228(12):1863-1864

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Clinical, behavioral, and pulmonary changes in calves following inoculation with Mycoplasma bovis     

White BJ  Anderson DE  Renter DG  Larson RL  Mosier DA  Kelly LL  Theurer ME  Robért BD  Walz ML 《American journal of veterinary research》2012,73(4):490-497

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Responses of Italian ryegrass to phosphorus on highly‐weathered soils     

N. Miles  R.J. Eckard  J.M. deVilliers 《African Journal of Range and Forage Science》2013,30(3):86-91

Italian ryegrass (Loliwn multiflorum cv. Midmar) responses to fertilizer P were studied in field experiments under irrigation on highly‐weathered ferrallitic soils at two localities in Natal. Each experiment was conducted over two seasons (1985 and 1986), the pasture being re‐established after the first season. Large dry matter yield responses to P were measured on both soils. Phosphorus effects were greatest during the establishment phase (autumn) and, on the colder site, in spring. Concentrations of P in herbage were much lower in winter than in autumn or summer. The greater responsiveness to P in spring and the lower P concentrations in herbage during the colder months suggested that restricted P uptake contributed to yield reductions in winter. Relationships between ryegrass P concentrations and yield indicated substantial within‐season variations in internal P requirement for maximum yield. This detracts from the usefulness of routine herbage P analyses for assessing ryegrass P sufficiency. However, soil analysis using an alkaline extractant (NH₄HCO₃/EDTA/NH₄F at pH 8.0), showed promise for predicting responsiveness to P. Concentrations of P in Italian ryegrass were well below the requirements reported in the literature for most classes of grazing ruminants, particularly during the colder months.  相似文献   

Involvement of ATP‐sensitive K+ channels in the peripheral antinociceptive effect induced by ketamine     

Thiago RL Romero  Igor DG Duarte 《Veterinary anaesthesia and analgesia》2013,40(4):419-424

ObjectiveTo investigate the contribution of K⁺ channels on peripheral antinociception induced by ketamine.Study designProspective experimental study.Animals110 male Wistar rats weighing 160–200 g.MethodsThe paw pressure required to elicit limb flexion was designated as the nociceptive threshold. Hyperalgesia was induced by intraplantar injection of prostaglandin E₂. All drugs were administered locally into the right hind paw of rats. Ketamine was administered into the right hind paw 2 hours and 55 minutes after local injection of PGE₂. Tetraethylammonium was administered 30 minutes prior to ketamine and the other K⁺ channel blockers, glibenclamide, dequalinium and paxilline, were administered 5 minutes prior to ketamine.ResultsProstaglandin E₂ (2 μg per paw) induced hyperalgesia. Ketamine (10, 20, 40 and 80 μg per paw) elicited a local peripheral antinociceptive effect that was antagonized by a specific blocker of ATP‐sensitive K⁺ channels, glibenclamide (20, 40 and 80 μg per paw). In another experiment, the non‐selective voltage‐dependent K⁺ channel blocker tetraethylammonium (30 μg per paw) and small and large conductance blockers of Ca²⁺‐activated K⁺ channels, dequalinium (50 μg per paw) and paxilline (20 μg per paw), were ineffective at blocking the effect of a local ketamine injection.Conclusions and clinical relevanceAnalysis of these results provides evidence that ketamine, may in part, induce peripheral antinociceptive effects by ATP‐sensitive K⁺ channel pathway activation.  相似文献   

Simulating Current Successional Trajectories in Sagebrush Ecosystems With Multiple Disturbances Using a State-and-Transition Modeling Framework     

Louisa B. Evers  Richard F. Miller  Paul S. Doescher  Miles Hemstrom  Ronald P. Neilson 《Strength and Conditioning Journal》2013,66(3):313-329

Disturbances and their interactions play major roles in sagebrush (Artemisia spp. L.) community dynamics. Although impacts of some disturbances, most notably fire, have been quantified at the landscape level, some have been ignored and rarely are interactions between disturbances evaluated. We developed conceptual state-and-transition models for each of two broad sagebrush groups—a warm-dry group characterized by Wyoming big sagebrush (Artemisia tridentata Nutt. subsp. wyomingensis Beetle & Young) communities and a cool-moist group characterized by mountain big sagebrush (Artemisia tridentata Nutt. subsp. vaseyana [Rydb.] Beetle) communities. We used the Vegetation Dynamics Development Tool to explore how the abundance of community phases and states in each conceptual model might be affected by fire, insect outbreak, drought, snow mold, voles, sudden drops in winter temperatures (freeze-kill), livestock grazing, juniper (Juniperus occidentalis var. occidentalis Hook.) expansion, nonnative annual grasses such as cheatgrass (Bromus tectorum L.), and vegetation treatments. Changes in fuel continuity and loading resulted in average fire rotations of 12 yr in the warm-dry sagebrush group and 81 yr in the cool-moist sagebrush group. Model results in the warm-dry sagebrush group indicated postfire seeding success alone was not sufficient to limit the area of cheatgrass domination. The frequency of episodes of very high utilization by domestic livestock during severe drought was a key influence on community phase abundance in our models. In the cool-moist sagebrush group, model results indicated at least 10% of the juniper expansion area should be treated annually to keep juniper in check. Regardless, juniper seedlings and saplings would remain abundant.  相似文献   

Viruses associated with feline respiratory disease in Dunedin     

Loreen Brehaut B.Sc.  R.H. Jones B.Med.Sc. M.B. Ch.B. D.C.P.  P.J. McEwan M.Sc.  J.A.R. Miles M.A. M.D. F.R.A.C.P. P.R.S.N.Z. 《New Zealand veterinary journal》2013,61(5):82-86

Extract

In Dunedin, feline respiratory infections with a high morbidity, but a low mortality except in very young animals, commonly occur in epizootics and appear to be enzootic between these outbreaks. The affected animals develop a serous ocular discharge which later becomes mucoid, and a mucoid nasal discharge associated with sneezing especially after handling. While these signs of infection are present, the animals are anorexic and listless. The disease may last for two weeks or more and sometimes affected cats develop a chronic snuffle lasting for months despite treatment. The disease is usually referred to as “snuffles”, although it is probably identical with the syndrome called “rhinotracheitis”. In the summer time, it commonly occurs in boarding establishments where large numbers of pets collected from a wide area are left by summer vacationers. In breeding catteries, infections occur most often in the spring and especially at the time of the first warm weather. Young kittens about 5 to 10 days old are usually affected but kittens which escape infection at this stage not infrequently develop symptoms at about 6 weeks of age.  相似文献   

Low‐level laser therapy reduces time to ambulation in dogs after hemilaminectomy: a preliminary study     

W. E. Draper  T. A. Schubert  R. M. Clemmons  S. A. Miles 《The Journal of small animal practice》2013,54(1):57-57

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Further studies on feline respiratory virus diseases     

R.J.S. Tan M.Sc. Dip.Sci. L.I.Biol.  J.A.R. Miles M.A. M.D. F.R.A.C.P. F.R.S.N.Z. 《New Zealand veterinary journal》2013,61(1-2):12-15

Extract

The July 1973 issue of the New Zealand Journal of Agriculture discussed the Tama revolution. No mention was made of the possibility of nitrite poisoning in cattle grazing ‘Grasslands Tama’ (tetraploid westerwolds) ryegrass. There have been deaths from nitrite poisoning in cattle grazing Tama ryegrass and other crops in many districts this year, and this experience with a brief discussion on nitrite/nitrate poisoning is presented for the guidance of those who may be considering Tama ryegrass as a fodder crop.  相似文献