Use of a meal challenge test to estimate peak postprandial triglyceride concentrations in dogs     

Elliott KF  Rand JS  Fleeman LM  Morton JM  Markwell PJ 《American journal of veterinary research》2011,72(2):161-168

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Reproductive management of dairy herds in New Zealand: attitudes, priorities and constraints perceived by farmers managing seasonal-calving, pasture-based herds in four regions     

Brownlie TS  Weir AM  Tarbotton I  Morton JM  Heuer C  McDougall S 《New Zealand veterinary journal》2011,59(1):28-39

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The action of formamidines on octopamine receptors in the locust     

Anthony P. Davenport  David B. Morton  Peter D. Evans 《Pesticide biochemistry and physiology》1985,24(1):45-52

The actions of a range of formamidines have been investigated biochemically and physiologically on octopamine receptors in the locust Schistocerca gregaria. All the formamidines tested [chlordimeform (CDM), demethylchlordimeform (DCDM), amitraz, and UK 16353] mimicked the action of octopamine by (1) increasing the amplitude and relaxation rate of slow motorneurone tension in the extensor-tibiae muscle of the hind leg and (2) changing the levels of cyclic AMP in this muscle. UK 16353 was most effective in changing these parameters, followed by DCDM then amitraz and CDM. The formamidine-induced increase in cyclic AMP levels was reduced or completely blocked by phentolamine, an antagonist of insect octopamine receptors. The time course for the increase in cyclic AMP was followed for 30 min by incubating muscles in 10^?5M DCDM. The increase was potentiated by the phosphodiesterase inhibitor 3-isobutyl-1-methylxanthine. In the presence of this compound, the response peaked within 5 min, before declining to a lower plateau after 12 min. The response to 10^?5M CDM was lower and the maximum increase occurred after 7 min, then rapidly declined. Both formamidines increased cyclic AMP in a dose-dependent way with a threshold of between 5 × 10^?7 and 10^?8M. The results are discused in terms of the relationship between the biochemical and physiological actions of the formamidines in this preparation.  相似文献   

Malignant histiocytosis in four dogs   总被引：1，自引：0，他引：1  

M L Wellman  D J Davenport  D Morton  R M Jacobs 《Journal of the American Veterinary Medical Association》1985,187(9):919-921

The clinical and pathologic features of 4 dogs with malignant histiocytosis were evaluated. The most common clinical signs were weight loss, lethargy, lymphadenopathy, hepatosplenomegaly, and anemia. Neoplastic histiocytic infiltrates most commonly were found in the spleen, bone marrow, liver, or lymph nodes. Malignant histiocytosis was considered as a differential diagnosis for anemic dogs with lymphadenopathy and/or hepatosplenomegaly.  相似文献   

Susceptibility of male white-tailed deer (Odocoileus virginianus) to Brucella ovis infection     

S J Barron  A A Kocan  R J Morton  T R Thedford  C S McCain 《American journal of veterinary research》1985,46(8):1762-1764

Infection with Brucella ovis was established by conjunctival instillation in 8 male white-tailed deer (Odocoileus virginianus). Infection was transient in young bucks, but persisted in bucks that were mature when inoculated. The deer were euthanatized and necropsied at various intervals after inoculation. Brucella ovis was recovered from a mature buck at necropsy on postinoculation day 429. Four deer had gross lesions and histopathologic changes of the epididymides. A mature noninfected buck confined for 7 months with an infected buck acquired infection and developed epididymal lesions.  相似文献   

Circulating concentrations of trypsin-like immunoreactivity and activities of lipase and amylase after pancreatic duct ligation in dogs     

K W Simpson  R M Batt  L McLean  D B Morton 《American journal of veterinary research》1989,50(5):629-632

The possibility that assay of circulating trypsin-like immunoreactivity (TLI) could assist in the diagnosis of acute pancreatitis in dogs has been examined by assaying plasma TLI concentrations after pancreatic duct ligation and comparing the results with plasma activities of lipase and amylase. Venous blood samples were obtained from 8 dogs before surgery, then daily for 5 days and at 14 days after ligation of pancreatic ducts. Plasma concentrations of TLI increased within 24 hours and tended to peak before and to decrease more rapidly than activities of lipase and amylase, remaining greater than the control range for 5 days in all but 2 dogs. Plasma lipase and amylase activities increased together and remained greater than the control range in all dogs for 5 days after surgery. Regression analysis of all postoperative data indicated significant correlations between concentration of TLI and lipase activity (r = 0.67, P less than 0.001), concentration of TLI and amylase activity (r = 0.53, P less than 0.001), and between lipase and amylase activities (r = 0.74, P less than 0.001). These findings suggested that assay of TLI may provide an early indication of acute pancreatitis in dogs. Because TLI is specifically pancreatic in origin, high plasma TLI concentration may prove a more reliable indicator of clinical pancreatitis than high activities of amylase or lipase, which may be derived from extrapancreatic tissues.  相似文献   

Clostridium perfringens type C enterotoxemia in a newborn foal   总被引：2，自引：0，他引：2  

M Howard-Martin  R J Morton  C W Qualls  C G MacAllister 《Journal of the American Veterinary Medical Association》1986,189(5):564-565

A 1-day old, full-term foal with a history of colic died 2 hours after admission. Necropsy revealed an extremely flaccid, fluid-filled intestinal tract. Histopathologically, the superficial intestinal mucosa was completely necrotic, with minimal inflammatory response. Numerous large, gram-positive rods covered the villi. Clostridium perfringens was isolated on bacteriologic culturing of the intestinal tract contents and was identified as type C by toxin neutralization tests.  相似文献   

Classical swine fever in Victorian domestic pigs: evidence of disease freedom     

JC Hunnam  KM Moore  P Daniel  MA Stevenson  SE Salmon 《Australian veterinary journal》2019,97(11):447-451

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Assessment of the efficacy of an autogenous vaccine against Yersinia pseudotuberculosis in young Merino sheep     

KJ Stanger  H McGregor  M Marenda  JM Morton  JWA Larsen 《New Zealand veterinary journal》2019,67(1):27-35

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Dachshund bitch with severe uterine adhesions and intramural uterine foreign material as an incidental ovariohysterectomy finding          下载免费PDF全文

KM Watson  NU Horadagoda  SA Piripi 《Australian veterinary journal》2016,94(1-2):24-26

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