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PubMed Central (PMC3 - NLM DTD) (2,997,259 recursos)

Archive of life sciences journal literature at the U.S. National Institutes of Health (NIH), developed and managed by NIH's National Center for Biotechnology Information (NCBI) in the National Library of Medicine (NLM).

The Canadian Veterinary Journal

Mostrando recursos 13,281 - 13,300 de 14,214

  1. CORRECTION


  2. Bilateral renal agenesis in an alpaca cria

    Poulsen, Keith P.; Gerard, Mathew P.; Spaulding, Kathy A.; Geissler, Kyleigh A.; Anderson, Kevin L.
    A 3-day-old male alpaca cria was presented for lack of vigor and failure to urinate since birth. Based on the history, laboratory data, ultrasonographs, surgical findings, and postmortem examination, the cria was diagnosed with bilateral renal agenesis and hypoplastic bladder, a congenital condition rarely seen in veterinary medicine.

  3. Bilateral ‘gut-tie’ in a recently castrated steer

    Lores, Marcos; Haruna, Julius A.; Ortenburger, Art
    Small intestinal obstruction caused by 2 fibrous bands was found in a steer. Distended small intestine was palpable per rectum. Each band was located bilaterally between the caudal abdominal wall and the pelvic inlet. The compromised portion of intestine was considered nonviable and the animal was euthanized.

  4. Diagnosis of deafness in a horse by brainstem auditory evoked potential

    Harland, Malte M.; Stewart, Allison J.; Marshall, Arvle E.; Belknap, Ellen B.
    Deafness was confirmed in a blue-eyed, 3-year-old, overo paint horse by brainstem auditory evoked potential. Congenital inherited deafness associated with lack of facial pigmentation was suspected. Assessment of hearing should be considered, especially in paint horses, at the time of pre-purchase examination. Brainstem auditory evoked potential assessment is well tolerated and accurate.

  5. Owner experiences and complications with home use of a replacement low profile gastrostomy device for long-term enteral feeding in dogs

    Yoshimoto, Sean K.; Marks, Stanley L.; Struble, Andrea L.; Riel, Darlene L.
    The purpose of this study was to evaluate complications and owner impressions of a low profile gastrostomy device (LPGD) for enteral feeding in dogs. Medical records of dogs that had placement of a percutaneous endoscopic gastrostomy tube followed by a LPGD between 1995 and 2003 were reviewed. Fifteen dogs had 29 devices placed for a variety of disease states in which enteral nutritional support was indicated. The individual tubes were placed for a median duration of 212 d. Most complications occurred more than 15 d after placement and were of no health risk to the animals. The most common reason...

  6. Management factors affecting stereotypies and body condition score in nonracing horses in Prince Edward Island

    Christie, Julie L.; Hewson, Caroline J.; Riley, Christopher B.; McNiven, Mary A.; Dohoo, Ian R.; Bate, Luis A.
    In North America, there are few representative data about the effects of management practices on equine welfare. In a randomized survey of 312 nonracing horses in Prince Edward Island (response rate 68.4%), owners completed a pretested questionnaire and a veterinarian examined each horse. Regression analyses identified factors affecting 2 welfare markers: body condition score (BCS) and stereotypic behavior. Horses’ BCSs were high (mean 5.7, on a 9-point scale) and were associated with sex (males had lower BCSs than females; P < 0.001) and examination date (P = 0.052). Prevalences of crib biting, wind sucking, and weaving were 3.8%, 3.8%, and...

  7. Clinical efficacy and safety of transdermal methimazole in the treatment of feline hyperthyroidism

    Lécuyer, Manon; Prini, Sabrina; Dunn, Marilyn E.; Doucet, Michèle Y.
    Thirteen cats, newly diagnosed with hyperthyroidism, were treated with a transdermal formulation of methimazole at a dose of 5 mg (0.1 mL) (concentration of 50 mg/mL) applied to the internal ear pinna every 12 h for 28 d. Baseline hematologic and biochemical values, along with serum thyroxine (T4) levels, were obtained on presentation (day 0). Cats were evaluated at 14 d (D14) and 28 d (D28) following transdermal therapy. At each visit, a physical examination, a complete blood cell count, a serum biochemical analysis, and a serum T4 evaluation were performed. Ten cats completed the study. Clinical improvement, as well...

  8. Larval cyathostominosis in horses in Ontario: An emerging disease?

    Peregrine, Andrew S.; McEwen, Beverly; Bienzle, Dorothee; Koch, Thomas G.; Weese, J. Scott
    From 1991 to 2003, 24 cases of larval cyathostominosis were diagnosed at postmortem in equids, 15 (63%) from 2001 to 2003. Cases occurred from September to May, the majority from October to December. Median age was 12 mo. Diarrhea, colic, and weight loss were common clinical signs. Hypoalbuminemia and microcytosis were consistent findings.

  9. Brainstem auditory evoked responses and ophthalmic findings in llamas and alpacas in eastern Canada

    Webb, Aubrey A.; Cullen, Cheryl L.; Lamont, Leigh A.
    Seventeen llamas and 23 alpacas of various coat and iris colors were evaluated for: 1) deafness by using brainstem auditory evoked response testing; and 2) for ocular abnormalities via complete ophthalmic examination. No animals were deaf. The most common ocular abnormalities noted were iris-to-iris persistent pupillary membranes and incipient cataracts.

  10. Inflammatory aural polyp in a horse

    Fjordbakk, Cathrine T.; Kenney, Daniel G.; Rodriguez-Palacios, Alexander; Keller, Sonya; Stalker, Margaret
    An inflammatory aural polyp was identified in a 1-year-old standardbred filly, which presented with otorrhea and head rubbing. The polyp was removed by traction-avulsion, and the filly showed no subsequent signs of otorrhea. Aural polyps have not been reported in horses, but they are commonly seen in companion animals and humans.

  11. An estimation of reproductive performance of farmed elk (Cervus elaphus) in North America

    Woodbury, Murray R.; Berezowski, John; Haigh, Jerry
    North American farmed elk (Cervus elaphus) producers were surveyed to determine period specific rates of calving, abortion, and dystocia, and to examine the effect of reproduction-elated mortality on the productivity of farmed elk. The overall calving rate was 86.3% and the calving rate for adult cows was found to be significantly higher than that for heifers. Abortions were seen on 7.6% of farms and the overall abortion rate was approximately 0.6%. Dystocia was experienced in 5.9% of births. Neonatal mortality, summer mortality, weaning mortality, and postweaning mortality rates were calculated and compared. Failure to produce a live neonate was responsible...

  12. Evaluation of an actinomycin-D-containing combination chemotherapy protocol with extended maintenance therapy for canine lymphoma

    Siedlecki, Cecile T.; Kass, Philip H.; Jakubiak, Martin J.; Dank, Gillian; Lyons, Jarred; Kent, Michael S.
    In this retrospective study, a 6-drug (prednisone, L-asparaginase, vincristine, cyclophosphamide, doxorubicin, and actinomycin-D) chemotherapy protocol with extended maintenance for the treatment of lymphoma was evaluated for efficacy and toxicity in 39 dogs. The complete remission rate was 97%, with a median progression-free survival (PFS) of 331 d. The median overall survival (OS) was 461 d. Of the variables evaluated for prognostic significance, only immunopheno-type and sex were found to be prognostic. Dogs with T-cell lymphoma had shorter PFS and OS than dogs with B-cell lymphoma. Castrated male dogs had a shorter PFS and OS than spayed female dogs. Although the...

  13. Avian pox virus infection in a mourning dove

    Pledger, Alison
    An adult mourning dove (Zenaidura macroura) was presented with dyspnea, poor body condition, and poor flight endurance. Nodular lesions were visible on the cere, both feet, and skin covering the pectoral region. Histopathological examination revealed epithelial hyperplasia with eosinophilic intracytoplasmic inclusion bodies consistent with Avipoxvirus infection.

  14. Case study in canine intestinal lymphangiectasia

    Brooks, Thomas A.
    A 9.52 kg, 9-year-old, spayed female beagle was presented with the chief complaint of abdominal distention of 1 week’s duration. A presumptive diagnosis of canine intestinal lymphangectasia was arrived at by exclusion of other causes for the patient’s ascites. The patient was successfully treated with dietary modification and immunosuppressive therapy.

  15. Suspected Clostridium difficile-associated hemorrhagic diarrhea in a 1-week-old elk calf

    Arroyo, Luis G.; Rousseau, Joyce D.; Staempfli, Henry R.; Weese, J. Scott
    Clostridium difficile-associated diarrhea was suspected in a 1-week-old elk (Cervus elaphus) calf. The isolation of a toxigenic strain of C. difficile from a diarrheic fecal sample, along with exclusion of other enteropathogens, formed the basis of this presumptive diagnosis. Further study is indicated to evaluate the role of C. difficile in neonatal diarrhea in elk.

  16. The prevalence of milk and serum antibodies to Mycobacterium avium subspecies paratuberculosis in dairy herds in Ontario

    Hendrick, Steven; Duffield, Todd; Leslie, Ken; Lissemore, Kerry; Archambault, Marie; Kelton, David
    This study randomly surveyed 50 dairy herds in Ontario; 18% and 30% of herds had 2 or more milk or serum enzyme-linked immunosorbent assay (ELISA)-positive cows, respectively. The apparent cow level prevalence was 1.7% and 2.6% on the milk and serum ELISA, respectively. The serum and milk assays agreed moderately.

  17. Sudden cardiac death associated with occult hypertrophic cardiomyopathy in a dog under anesthesia

    Pang, Daniel; Rondenay, Yves; Hélie, Pierre; Cuvelliez, Sophie G.; Troncy, Eric
    A 6-year-old, 3.0 kg, neutered female, Yorkshire terrier was referred for orthopedic surgery. Cardiac arrest followed unsuccessful treatment of bradycardia and systemic arterial hypotension under general anesthesia. Postmortem examination revealed hypertrophic cardiomyopathy. A possible relationship between treatment of bradycardia, systemic arterial hypotension, and sudden cardiac death is described.

  18. A retrospective study of the causes of morbidity and mortality in farmed elk (Cervus elaphus)

    Woodbury, Murray R.; Berezowski, John; Haigh, Jerry
    A survey of North American farmed elk (Cervus elaphus) producers was performed to determine the causes of sickness and mortality in farmed elk and to estimate mortality rates. Records over a 10-year period from 8 North American veterinary diagnostic pathology laboratories were also examined and summarized. The primary diagnosis for each record was used to classify diseases into categories such as parasitic, infectious, toxicological, and neoplastic. Nonspecific trauma was the most frequently reported known cause of mortality in both sexes and all age classes by elk producers. Ranked on perceived economic importance, producers cited trauma, chronic wasting disease, calf scours,...

  19. The effect of postparturient urogenital diseases on the lifetime reproductive performance of sows

    Glock, Xaver T.P.; Bilkei, Gabor
    To prove the effect of postparturient swine urogenital disease (SUGD) on reproductive performance, culled sows with SUGD in their previous history (n = 1363) were subjected to retrospective lifetime production analysis. The sows were assigned to parity groups 1, 2 to 6, and > 6. Bacterial flora of vulval discharges were evaluated.

  20. Effects of propofol and fentanyl on duodenal motility activity in pigs

    Schnoor, J.; Unger, J.K.; Kuepper, T.; Bode, B.; Hofeditz, A.; Silny, J.; Rossaint, R.
    To investigate the effects of propofol and fentanyl on the postprandial duodenal motility the intraluminal impedance technique was used. Six pigs were instrumented with a central venous catheter, a percutaneous enterogastrostomy (PEG), and an impedance catheter, which was introduced via the PEG into the duodenum through endoscopy. Over the following 3 d, duodenal motility was measured for 8-hour periods. Measurements were taken on each subject under 3 different sets of conditions: in the conscious unrestrained pig, during propofol sedation, and during sedation with propofol-fentanyl. Both, after morning feeding and during gastric nutrition via the PEG, duodenal feeding patterns and duodenal...

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