Carter's Engineering Background     

Snow JA 《Science (New York, N.Y.)》1976,193(4257):948-950

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Effect of non-steroidal anti-inflammatory agents on plasma protein concentration of ponies     

D. H. Snow  T. A. Douglas  H. Thompson  P. H. Holmes  J. J. Parkins 《Veterinary research communications》1983,7(1):205-206

The recent findings of oral phenylbutazone administration causing a protein-losing gastroenteropathy in ponies are described. Similar investigations in ponies using either meclofenamic acid or naproxen at the therapeutic dose for two weeks followed by a further week of treatment at twice this dose rate were carried out. Neither drug produced any adverse clinical signs. Although a decrease in total plasma protein occurred with meclofenamic acid, this was not associated with a protein-losing gastroenteropathy.  相似文献   

Bone remodeling in the lumbar vertebrae of young adult beagles     

G R Snow  K K Karambolova  C Anderson 《American journal of veterinary research》1986,47(6):1275-1277

Thirty-two static and dynamic histomorphometric determinants of tetracycline-labeled trabecular bone were determined for the L1 and L3 vertebrae of 5 intact and 6 oophorectomized Beagle bitches. Because significant differences in trabecular bone remodeling between the 2 vertebrae were not found, we concluded that the mean of the combined L1 and L3 data, or the mean of data generated from individual vertebrae, may be representative of trabecular bone remodeling of the lumbar vertebrae of Beagles.  相似文献   

Infestation in the dog by the paralysis tick, Ixodes holocyclus — 4. Cardiovascular effects     

JE ILKIW  DM TURNER†  AH GOODMAN‡ 《Australian veterinary journal》1988,65(8):232-235

To determine the extent and significance of changes in heart rate and rhythm noticed previously in dogs paralysed with Ixodes holocyclus, two studies were undertaken. In one the electrocardiogram was recorded at stages throughout the disease and the traces analysed for changes, while in the second a detailed study of the effect of Ixodes holocyclus on the cardiovascular system was undertaken. The electrocardiographic changes were extremely variable between stages and between dogs. Generally, if a dysrhythmia occurred in stages 1, 2 or 3 it tended to be sinus tachycardia, ventricular tachycardia or sinus arrest. In stage 4 sinus arrest, sinus bradycardia, or sinus or ventricular tachycardia were the prominent dysrhythmias, whereas in stage 5 sinus bradycardia predominated. Cardiovascular measurements indicated an increase in peripheral vascular resistance leading to a significant elevation in mean arterial pressure at all stages of the disease. Cardiac output was decreased significantly only at stage 2, although it was below the control measurements at all stages. Pulmonary arterial pressure was significantly elevated at stages 2, 3 and 4 due most probably to an increase in pulmonary vascular resistance. Myocardial contractility was not significantly changed throughout the disease. The changes observed in the electrocardiogram and the cardiovascular system in stages 1, 2 and 3 are unlikely to be due to hypoxia and could represent dysfunction of the autonomic nervous system. During stages 4 and 5 oxygen levels were below normal and the bradycardia seen terminally is almost certainly due to hypoxaemia.(ABSTRACT TRUNCATED AT 250 WORDS)  相似文献   

Breed and species comparison of amino acid transport variation in equine erythrocytes     

D A Fincham  J D Young  D K Mason  E A Collins  D H Snow 《Research in veterinary science》1985,38(3):346-351

The amino acid permeability of red blood cells from Equus caballus (thoroughbred, Arab, shire and pony), E przewalskii (Przewalski's horse), E asinus (donkey and mule) and E burchelli (common or plains zebra) was measured. Individual animals exhibited stable but widely differing rates of L-[U-14C]alanine uptake in the range 5 to 1554 mumol (litre cells)-1 h-1 (0.2 mM extracellular L-alanine, 37 degrees C). Of the thoroughbreds tested, 30 per cent had red blood cells which were essentially impermeable to L-alanine (5 to 10 mumol (litre cells)-1 h-1, giving transport rates similar to those found previously in amino acid transport-deficient sheep erythrocytes. In contrast, only 3 per cent of the ponies tested had red blood cells impermeable to L-alanine. No cases of erythrocyte amino acid transport deficiency were found in the other horse breeds and species tested.  相似文献   

Campylobacter jejuni as a Cause of Abortion in Mink   总被引：4，自引：1，他引：3       下载免费PDF全文

Hunter DB  Prescott JF  Pettit JR  Snow WE 《The Canadian veterinary journal. La revue veterinaire canadienne》1983,24(12):398-399

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Lack of effect of tunicamycin on spermatogenesis in rams     

PL STEWART  MV JAGO  JH DUFTY  JE PETERSON 《Australian veterinary journal》1998,76(4):289-290

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Farm practices to control E. coli O157 in young cattle--a randomised controlled trial     

Ellis-Iversen J  Smith RP  Van Winden S  Paiba GA  Watson E  Snow LC  Cook AJ 《Veterinary research》2008,39(1):3

A randomised controlled trial was used to investigate the effect of three complex management intervention packages to reduce the burden of E. coli O157 in groups of young-stock on cattle farms in England and Wales. All intervention farms were assigned measures to avoid buying in new animals and having direct contact or sharing water sources with other cattle. Furthermore, package A (7 farms) aimed to keep a clean environment and closed groups of young-stock; package B (14 farms) aimed for improved water and feed hygiene, whilst package C was assigned both A and B. The control farms (26 farms) were asked not to alter their practices. Farms, which were assigned intervention package A, exhibited a 48% reduction in E. coli O157 burden over the 4.5 months (average) of observation, compared to 18% on the control farms. The effect of package A compared to the control farms in a crude intention-to-treat model was RR = 0.26 (p=0.122). When the risk ratio was adjusted for actual application of the different measures, the effect of intervention package A became stronger and statistically significant (RR = 0.14 p=0.032). Statistical evidence (p< 0.05) showed that dry bedding and maintaining animals in the same groups were the most important measures within the package and weak evidence (p< 0.1) showed that a closed herd policy and no contact with other cattle may also be of importance. Compliance with the other measures in package A had no influence on the effect of the package. No evidence of effect of the other two intervention packages was found.  相似文献   

Assessment of the Accutrend GCT and PTS CardioChek meters to measure blood triglyceride concentrations in cats     

Elissa K. Kluger  Navneet K. Dhand  Randolph M. Baral  David H. Snow  Richard Malik  Merran Govendir 《Journal of Feline Medicine and Surgery》2010,12(6):458-465

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Chronic hypertrophic pyloric gastropathy in 14 dogs   总被引：1，自引：0，他引：1  

CR BELLENGER  JE MADDISON  GC MACPHERSON  JE ILKIW 《Australian veterinary journal》1990,67(9):317-320

SUMMARY Ten mate and 4 female dogs with chronic hypertrophic pyloric gastropathy were seen at the Sydney University Veterinary Teaching Hospital in the period 1982–88. The most commonly affected breeds were the Shihtzu and Maltese. The mean age was 8.2 yr and the mean body weight 6.5 kg. The most common clinical signs were vomiting, weight loss, polydipsia and depression. Hypokalaemia was present in 11 of 12 dogs examined and hypochloraemia in 10 of 11 dogs examined. Five of the six dogs that had blood gases measured were found to have a metabolic alkalosis. Surgery was performed on 13 dogs; pyloromyotomy 7, pyloroplasty 4, gastroduodenostomy 2. There was a recurrence of symptoms in one pyloromyotomy dog, and fatal ulceration and perforation of the cardia occurred in one pyloroplasty case. The remaining 11 dogs had a mean known symptom-free survival time of 20 mo. This study confirms the preponderance of affected males, identifies electrolyte and blood gas disturbances as significant complications of chronic hypertrophic pyloric gastropathy, and suggests that relatively minor surgery (pyloromyotomy) may have a place in the treatment of a selected subgroup of cases.  相似文献