Ammoniated forage toxicosis in nursing calves: a herd outbreak.     

T J Brazil  J M Naylor    E D Janzen 《The Canadian veterinary journal. La revue veterinaire canadienne》1994,35(1):45-47

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Etiology and pathogenesis of ulcerative enteritis ("quail disease"). Isolation of the causative anaerobe   总被引：2，自引：0，他引：2  

G A Berkhoff  S G Campbell  H B Naylor 《Avian diseases》1974,18(2):186-194

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Suspected acorn toxicity in nine horses          下载免费PDF全文

S. Smith  R. J. Naylor  E. J. Knowles  T. S. Mair  S. D. Cahalan  D. Fews  B. Dunkel 《Equine veterinary journal》2015,47(5):568-572

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Polysaccharide storage myopathy – the story so far          下载免费PDF全文

R. J. Naylor 《Equine Veterinary Education》2015,27(8):414-419

Polysaccharide storage myopathy (PSSM) was first described in 1992 in Quarter Horses, Appaloosa and Paint‐related breeds with clinical signs of exertional rhabdomyolysis. The disease is characterised by the accumulation of excessive glycogen and diastase‐resistant amylopectin polysaccharide inclusions within skeletal muscle fibres. The discovery of a mutation in the glycogen synthase 1 (GYS1) gene in some, but not all, horses with the disease suggested that PSSM represents a group of diseases with similar pathology but different aetiologies and that the pathogenesis is more complex than initially thought. Type 1 PSSM (PSSM1) refers to horses with the GYS1 mutation and has subsequently been identified in a large number of breeds found in Europe and North America. Clinical presentations associated with PSSM1 can vary and increased muscle enzyme activity at rest or following exercise often accompanies PSSM1; however, such changes may not be present in all cases. A diagnosis of PSSM is made on the basis of histopathology or specifically PSSM1 is diagnosed by genotyping horses for the GYS1 mutation. Cases usually respond well to management changes, in particular a diet low in starch and high in fat when it is accompanied by regular exercise.  相似文献   

Nitrate-nitrogen content of potatoes as affected by sludge-amended soil     

Nell I. Mondy  Barry Gosselin  Lewis M. Naylor 《American Journal of Potato Research》1986,63(7):379-382

The effect of sludge-amended soil on the nitrate-nitrogen (NO₃-N) content of Katahdin potatoes was investigated in each of two years. In both years the nitrate-nitrogen content of potatoes grown on sludge-amended soil was significantly higher than that of controls.  相似文献   

Obstruction of the small intestine by a trichobezoar in cattle: 15 cases (1992-2002)     

Abutarbush SM  Naylor JM 《Journal of the American Veterinary Medical Association》2006,229(10):1627-1630

OBJECTIVE: To determine historical and clinical findings, treatment, and outcome for cattle with small intestinal obstruction caused by a trichobezoar. DESIGN: Retrospective case series. ANIMALS: 15 cattle. PROCEDURES: Medical records of cattle with a diagnosis of small intestinal obstruction by a trichobezoar from 1992 to 2002 were reviewed. Information pertaining to various aspects of diagnosis, treatment, and outcome was collected from records. RESULTS: Trichobezoars were more common in young cattle, and affected cattle did not deteriorate clinically as rapidly as cattle with other types of intestinal obstruction. The most common initial owner complaints included decreased or absent fecal output, inappetance, abdominal distension, and signs of abdominal pain. Common clinical findings were dehydration, decreased or absent rumen motility, signs of depression, splashing sounds during succussion of the abdomen, and a pinging sound on percussion of the abdomen. The jejunum was obstructed in 10 cattle. Hypochloremic metabolic alkalosis and chronic inflammation were common laboratory findings. All 4 cattle that underwent abdominocentesis had peritonitis. The obstructing trichobezoar was removed surgically in 9 cattle, of which 7 survived and 2 died. The 6 cattle treated medically died or were euthanized. CONCLUSIONS AND CLINICAL RELEVANCE: Obstruction of the small intestine by a trichobezoar is uncommon, but it should be considered as a differential diagnosis in cattle with signs of intestinal obstruction, particularly if they are younger than 4 years of age and have a history of nonacute signs of intestinal obstruction. Surgical removal appears to be a favorable method of treatment and should be considered when this condition is suspected.  相似文献   

Factors affecting rectal temperature measurement using commonly available digital thermometers     

Naylor JM  Streeter RM  Torgerson P 《Research in veterinary science》2012,92(1):121-123

Rectal temperature measurement is an essential part of physical examination of cattle and some physiological experiments. Modern digital thermometers are often used to measure rectal temperatures by students; this study describes their reliability and appropriate use. Students measured rectal temperature on 53 occasions using their personal digital thermometer and techniques gained from previous instruction, rectal temperature was also measured by an experienced person using a Cornell mercury thermometer completely inserted in the rectum. Cornell mercury thermometers values were 38.95±0.05°C (mean±1 SE, n=53). Student rectal temperature measurements using their initial technique were nearly 0.5°C lower, 38.46±0.07°C. After receiving instruction to insert the digital thermometer to the window, student obtained values were 38.77±0.06°C; these are significantly higher than with the student's initial technique and closer to those obtained with a Cornell thermometer. In a series of 53 water bath tests, student owned thermometers recorded similar mean values to those of a traceable (reference) digital thermometer, Cornell mercury thermometer readings were 0.2°C higher. 10 individual digital thermometers were repeatedly tested against a traceable thermometer in a water bath, one was inaccurate. In a separate experiment a trained clinician tested the effect of angle of insertion of a digital thermometer on temperature readings and the affect was <0.1°C. We conclude that accurate temperature measurements using digital thermometers are only likely if the thermometer is inserted to the beginning of the window and the thermometer's accuracy is checked periodically.  相似文献   

Model performance of tree height-diameter relationships in the central Congo Basin     

Elizabeth Kearsley  Pieter CJ Moonen  Koen Hufkens  Sebastian Doetterl  Janvier Lisingo  Faustin Boyemba Bosela  Pascal Boeckx  Hans Beeckman  Hans Verbeeck 《Annals of Forest Science》2017,74(1):7

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Identification of putative kdr mutations in the tropical bed bug,Cimex hemipterus (Hemiptera: Cimicidae)          下载免费PDF全文

Kai Dang  Cheryl S Toi  David G Lilly  Chow‐Yang Lee  Richard Naylor  Apiwat Tawatsin  Usavadee Thavara  Wenun Bu  Stephen L Doggett 《Pest management science》2015,71(7):1015-1020

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Ancient mantle in a modern arc: osmium isotopes in izu-bonin-mariana forearc peridotites   总被引：2，自引：0，他引：2  

IJ Parkinson  CJ Hawkesworth  AS Cohen 《Science (New York, N.Y.)》1998,281(5385):2011-2013

Mantle peridotites drilled from the Izu-Bonin-Mariana forearc have unradiogenic 187Os/188Os ratios (0.1193 to 0.1273), which give Proterozoic model ages of 820 to 1230 million years ago. If these peridotites are residues from magmatism during the initiation of subduction 40 to 48 million years ago, then the mantle that melted was much more depleted in incompatible elements than the source of mid-ocean ridge basalts (MORB). This result indicates that osmium isotopes record information about ancient melting events in the convecting upper mantle not recorded by incompatible lithophile isotope tracers. Subduction zones may be a graveyard for ancient depleted mantle material, and portions of the convecting upper mantle may be less radiogenic in osmium isotopes than previously recognized.  相似文献