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PubMed Central (PMC3 - NLM DTD) (2,892,277 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 14,083

13281. Immunohistochemical study of Hemophilus somnus, Mycoplasma bovis, Mannheimia hemolytica, and bovine viral diarrhea virus in death losses due to myocarditis in feedlot cattle - Haines, Deborah M.; Moline, Karen M.; Sargent, Ron A.; Campbell, John R.; Myers, Douglas J.; Doig, Paul A.
The purpose of this study was to determine the presence of Hemophilus somnus, Mycoplasma bovis, Mannheimia hemolytica, and bovine viral diarrhea virus (BVDV) in lesional tissues of feeder calves dying with myocarditis. Tissues from the heart and lungs of 92 calves dying with myocarditis in Alberta feedlots were immunohistochemically stained for the antigens of these agents. Tissues from 44 calves dying from noninfectious causes and 35 calves dying with pneumonia were tested as controls. Hemophilus somnus was found in cardiac lesions in the majority of myocarditis cases (70/92). Mycoplasma bovis was concurrently demonstrated in the hearts of 4/92 affected calves....

13282. Canine urolithiasis: A look at over 16 000 urolith submissions to the Canadian Veterinary Urolith Centre from February 1998 to April 2003 - Houston, Doreen M.; Moore, Andrew E.P.; Favrin, Michael G.; Hoff, Brent
The purpose of this study was to report on the age, sex, breed, and mineral composition of 16 647 canine bladder uroliths submitted to the Canadian Veterinary Urolith Centre between February 1998 and April 2003. Each urolith submission was accompanied by a questionnaire. Of the submissions, approximately 43.8% were struvite and 41.5% oxalate. Struvite uroliths were most common in female dogs. Mixed breed dogs predominated, followed by the shih tzu, bichon frise, miniature schnauzer, Lhasa apso, and Yorkshire terrier. Oxalate uroliths were most common in males and in the miniature schnauzer, bichon frise, Lhasa apso, shih tzu, and Yorkshire terrier....

13283. Determination of the seroprevalence of Neospora caninum in feedlot steers in Alberta - Waldner, Cheryl; Wildman, Brian K.; Hill, Bruce W.; Fenton, R. Kent; Pittman, Tom J.; Schunicht, Oliver C.; Jim, G. Kee; Guichon, P. Timothy; Booker, Calvin W.
A study was conducted in Alberta to determine the seroprevalence of Neospora caninum in feedlot calves purchased from various auction markets throughout western Canada. Four feedlots (1 feedlot from each of the Airdrie and High River areas and 2 feedlots from the Strathmore area) were selected for sampling. At each feedlot, a random 10% sample of feedlot steer and bull calves entering the feedlot from September 2001 to December 2001 were enrolled in the study until there were a maximum of 500 animals enrolled per feedlot.

13284. Headshaking in a 10-year-old Thoroughbred mare - Bell, Angela J.M.
A 10-year-old Thoroughbred mare was presented with a 2.5-week history of headshaking. Based on a thorough physical examination, blood analysis, and a fine needle aspirate of an enlarged thyroid gland, a tentative diagnosis of seasonal idiopathic headshaking was made. Treatment with cyproheptadine was attempted.

13285. Pregnancy toxemia in a ferret - Dalrymple, Erica F.
A late-gestation jill was presented for depression, anorexia, and weakness. The working diagnosis became pregnancy toxemia. Supportive care was initiated and an emergency cesarian section performed. Twelve live kits were delivered; however, all soon perished despite home care. Surgery and recovery are discussed, including information regarding pregnancy toxemia in general.

13286. Effects of ketanserin on hypergranulation tissue formation, infection, and healing of equine lower limb wounds - Engelen, Marc; Besche, Béatrice; Lefay, Marie-Paul; Hare, Jonathan; Vlaminck, Kathleen
The objective of this multicentre, randomized, controlled field study was to determine the efficacy of ketanserin gel in preventing exuberant granulation tissue formation (hypergranulation) and infection in equine lower limb wounds. Horses and ponies (n = 481) with naturally occurring wounds were randomized to either topical treatment with ketanserin gel (n = 242) or a positive control (Belgium, Germany: ethacridin lactate solution, n = 120; France, United Kingdom: malic, benzoic, and salicylic acid [MBS] cream, n = 119). Treatment continued until the wound healed (success), formed hypergranulation tissue (failure), or became infected (failure). Treatment was terminated after 6 months in...

13287. The utility of ketoprofen for alleviating pain following dehorning in young dairy calves - Milligan, Barry N.; Duffield, Todd; Lissemore, Kerry
To determine if ketoprofen, in addition to local anaesthesia, reduces pain following dehorning, we experimentally dehorned dairy calves, less than 2 weeks of age, with (20 calves) or without (20 calves) intramuscular injections of ketoprofen. All calves received a local anesthetic (lidocaine) prior to dehorning and were dehorned with heat cauterization. Cortisol concentration was measured via jugular blood samples taken immediately before dehorning and at 3 and 6 hours following dehorning. Calf behavior was recorded between 0 and 2, 3 and 5, and 6 and 8 hours following dehorning. There was no significant (P > 0.10) effect on creep feed...

13288. Clinical evaluation of a powder of quality elk velvet antler for the treatment of osteoarthrosis in dogs - Moreau, Maxim; Dupuis, Jacques; Bonneau, Norbert H; Lécuyer, Manon
A powder of quality elk velvet antler (QEVA) was evaluated on client-owned dogs with osteoarthrosis (OA) in a clinical, double-blind, and placebo-controlled study. Thirteen dogs received a placebo for 30 days and then QEVA for 60 days. Twenty-five other dogs received QEVA for 60 days. Gait analysis measured with a force plate, clinical signs assessed by an orthopedic surgeon, performances in daily life activities and vitality assessed by the owners, and complete blood analyses were obtained at days 0, after 30 days of placebo and/or 60 days of QEVA. On placebo, the 13 dogs did not show significant improvement (P...

13289. The selenium status of dairy herds in Prince Edward Island - Wichtel, Jeffrey J.; Keefe, Gregory P.; Van Leeuwen, John A.; Spangler, Elizabeth; McNiven, Mary A.; Ogilvie, Timothy H.
Bulk tank milk selenium (Se) concentration was compared with mean serum Se concentration in 15 herds and was found to be an accurate reflection of the herd Se status. The Se status of 109 Prince Edward Island (PEI) dairy herds was monitored for 1 year using bulk tank milk Se concentration. Fifty-nine percent of the herds surveyed were, at some point, found to be marginal or deficient in Se, putting them at risk of disease and suboptimal production. The periods of greatest risk of deficiency were fall and winter, at which time 5% and 4%, respectively, of herds sampled fell...

13290. An outbreak of West Nile virus-associated disease in domestic geese (Anser anser domesticus) upon initial introduction to a geographic region, with evidence of bird to bird transmission - Austin, Ronald J.; Whiting, Terry L.; Anderson, Robert A.; Drebot, Michael A.
West Nile virus activity in Manitoba was documented for the first time by the collection of an infected crow found on July 8, 2002, in Winnipeg. West Nile virus was identified as the cause of death for a large number of domestic geese at a single farm in southern Manitoba in August. Of the 5 differently aged cohorts on the affected farm, which included 2 breeding flocks and 3 growing flocks, the 6-week-old cohort was most severely affected with 692 of 2731 goslings dying within a 10-day period. Seroprevalence of West Nile virus in 2 clinically affected and recovered juvenile...

13291. Type 3 von Willebrand’s disease in a Shetland sheepdog - Pathak, Elizabeth J.
A 3.75-year-old, spayed female, Shetland sheepdog was presented with excessive bleeding from a gingival surface. The dog’s condition deteriorated over 24 h and whole fresh blood was transfused. Type 3 von Willebrand’s disease was diagnosed. Coagulation was achieved and the dog was released with recommendations for a sedentary lifestyle and careful monitoring.

13292. Aortic valvular endocarditis in a dog - Brown, Valerie A.
A 4-year-old German Shepherd was evaluated for progressive depression, lethargy, anorexia, and dyspnea. Despite treatment with diuretics and antibiotics, the dog died. Based on clinical, radiographic, and pathologic findings, the diagnosis was heart failure resulting from aortic valvular endocarditis.

13293. Influence of farm application of oregano on performances of sows - Amrik, Bela; Bilkei, Gabor
This study was performed in a large commercial herd in eastern Europe to test the effect of oregano feed supplementation. Sows were studied in a unit where alternate farrowing groups were given diets containing 1000 ppm oregano in the prefarrowing and lactation diet. Oregano-treated groups showed a lower (P = 0.003) annual sow mortality rate, a lower (P = 0.03) sow culling rate during lactation, an increased (P = 0.01) subsequent farrowing rate, and more (P = 0.05) live-born piglets per litter compared with the nontreated sows. The conclusion was that dietary oregano supplementation improved the reproductive performance of sows...

13294. A comparison of serologic tests for the detection of serum antibodies to whole-cell and recombinant Borrelia burgdorferi antigens in cattle antigens in cattle - Magnarelli, Louis A.; Bushmich, Sandra L.; Sherman, Bruce A.; Fikrig, Erol
Serum samples from healthy dairy and beef cattle, living in tick-infested areas of Connecticut, USA, were analyzed by polyvalent enzyme-linked immunosorbent assays (ELISA), indirect fluorescent antibody (IFA) staining methods, or Western blot procedures to detect antibodies to tick-borne agents. Of the 80 sera tested by ELISA with whole-cell or 10 separate recombinant antigens (fusion proteins) of Borrelia burgdorferi sensu stricto, 57 (71%) were positive to 1 or more antigens, while 36 (45%) reacted to whole-cell antigens by IFA staining methods. Three (4%) of 80 samples had antibodies to Anaplasma phagocytophilum. There were anti bodies to outer surface protein (Osp) A,...

13295. Otitis media in dairy calves: A retrospective study of 15 cases (1987 to 2002) - Francoz, David; Fecteau, Gilles; Desrochers, André; Fortin, Madeleine
Epidemiological data, clinical signs, complementary examination findings, antimicrobial treatments, and outcome were reviewed in 15 calves diagnosed with otitis media at the Centre hospitalier universitaire vétérinaire de l’Université de Montréal between 1987 and 2002. Age at presentation ranged from 2 to 18 weeks. A purulent ear discharge and epiphora were seen in 8/12 and 6/15 cases, respectively. Neurological signs observed were head tilt (13), eyelid ptosis (7), paresis/paralysis of the pinna (8), ataxia (2), strabismus (2), and convulsions (1). Concurrent pneumonia was frequently diagnosed (n = 11). A Mycoplasma sp. was the principal pathogen isolated from ear discharge; 6 out...

13296. Unilateral renal cell carcinoma in a Labrador retriever - Bennett, Fleur
A 7-year-old, neutered male, Labrador retriever was presented with a history of hematuria. Radiographic and ultrasonographic studies led to a presumptive diagnosis of unilateral renal neoplasia. Unilateral nephroureterectomy was performed. Histopathologic examination of the resected mass confirmed the diagnosis of renal cell carcinoma. Six weeks postoperatively, the dog was well.

13297. A system response to an outbreak of enzootic pneumonia in grow/finish pigs - Bargen, Leeanne E.
A Mycoplasma hyopneumoniae-negative commercial swine production system broke with enzootic pneumonia at their grow/finish site in southern Manitoba in October, 2003. System responses included feed medication, depopulation, delayed shipment of pigs to the infected site, vaccination of at risk sow herds, and disinfection when grow/finish site depopulation was completed.

13298. Bovine cysticercosis: Preliminary observations on the immunohistochemical detection of Taenia saginata antigens in lymph nodes of an experimentally infected calf - Ogunremi, Oladele; MacDonald, Garry; Scandrett, Brad; Geerts, Stanny; Brandt, Jef
A newly developed immunohistochemical test was used for the first time to demonstrate the presence of Taenia saginata (Cysticercus bovis) antigens in the lymph nodes of a heifer calf experimentally inoculated with Taenia saginata eggs. The new test should aid in the differential diagnosis of eosinophilic lymphadenitis in cattle.

13299. Phosphate enema toxicosis in a pygmy goat wether - Hickman, Shirani A.; Gill, Marjorie S.; Marks, Steven L.; Smith, Julie A.; Sod, Gary A.
Phosphate enema toxicity was diagnosed in a 7-month-old, castrated male, pygmy goat. On presentation, clinical findings included mild depression, tachycardia, tachypnea, rumen stasis, muscle tremors, hypocalcemia, hypokalemia, hypochloremia, hyperphosphatemia, azotemia, and metabolic acidosis. Fluid diuresis and parenteral antimicrobial therapy resulted in recovery after 3 d of treatment.

13300. Bovine familial convulsions and ataxia in Saskatchewan and Alberta - Fournier, Dominique; Keppie, Nathan; Simko, Elemir
Bovine familial convulsion and ataxia, a heritable disorder, is present in crossbred Aberdeen Angus cattle in western Canada. Though the prevalence appears to be low, this genetic defect might become widespread if not controlled. Characteristic histological lesions were seen in the lingula, uvula, or both, of all affected calves regardless of their age.


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