In This lssue—October 15, 2010

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Cattle veterinarians are assessing their roles on farms as they endure challenges from other groups within animal agriculture. The Executive Board approved a policy on editorial independence for the AVMA journals, while the AVMA and AVMF are working to increase collaboration.

See page 866

Letters to the Editor

See page 898

What Is Your Diagnosis?

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See pages 903, 907

Pathology in Practice

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See page 911

Animal Behavior Case of the Month

See page 916

facts & figures

Employment of female and male graduates of US veterinary medical colleges, 2010

Mean starting salary for graduates of US veterinary medical colleges in 2010 who accepted full-time positions was $52,478 for males and $47,472 for females. When salaries for positions in advanced education were excluded, the mean full-time salary increased to $69,245 for males and $66,653 for females. Mean debt among those with debt was $131,679 for males and $134,462 for females.

See page 922

Azathioprine-prednisone for treatment of dogs with meningoencephalomyelitis of undetermined etiology

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The variable but generally positive response to immunosuppressive treatment in dogs with meningoencephalomy-elitis of undetermined etiology suggests that the underlying conditions are immunemediated. Immunosuppression with corticosteroids is the cornerstone of treatment, but survival times are poor and adverse effects are common. In a review of 40 dogs with MUE treated with a combination of prednisone and azathioprine, azathioprine appeared to be a safe and potentially effective adjunct to prednisone treatment. Median survival time was 1,834 days, and was significantly longer for dogs that had a complete response than for dogs that did not. Survival time was significantly shorter for dogs that relapsed than for those that did not.

See page 929

Biological behavior of oral and perioral mast cell tumors in dogs

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Results of a retrospective study of medical records for 44 dogs with mast cell tumors involving the oral mucosa, oral mucocutane-ous junction, or perioral region indicated that the presence of regional lymph node metastasis at the time of diagnosis was a negative prognostic factor, with median survival time for dogs with lymph node metastasis being 14 months whereas median survival time was not reached for dogs without lymph node metastasis. Prolonged survival times were achieved with treatment, with median survival time for all dogs being 52 months. Intensity of staining for chemokine receptor type 7 was not significantly associated with the presence of lymph node metastasis or with survival time.

See page 936

Distensible superficial venous orbital malformations involving the lower eyelid in two horses

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Two horses were examined because of unilateral, fluctuant, vascular masses involving the lower eyelid. Combinations of contrast angiography, Doppler ultrasonography, surgical exploration, and blood gas analysis (horse 1) and postmortem and histologic examination (horse 2) were used to determine that the masses consisted of non-neoplastic distended venous channels with anastomoses to the inferior lateral palpebral and angularis oculi veins (both horses) as well as the facial vein (horse 2). Horse 1 underwent surgical exploration and ligation of the vascular malformation. Six months after surgery, the mass was markedly reduced in size.

See page 943

Passive transfer of immunity in neonatal dairy calves fed colostrum or bovine serum-based colostrum replacement and colostrum supplement products

Results of a randomized controlled trial involving 18 Jersey and 269 Holstein neonatal heifer calves suggested that sequential feeding of bovine serum-based colostrum replacement and colostrum supplement products could be used as an alternative to feeding colostrum to achieve passive transfer of immunity. Calves were fed 4 L of colostrum in 1 or 2 feedings or were fed 2 L of a colostrum replacement product within 2 hours after birth and 2 L of a colostrum supplement product between 2 and 12 hours after birth. The percentage of calves that had failure of passive transfer of immunity (ie, serum IgG concentration < 1,000 mg/dL) was not significantly different between groups.

See page 949

Investigation of a bluetongue disease epizootic in sheep in Wyoming

Findings of an investigation of the 2007 bluetongue disease epizootic caused by bluetongue virus serotype 17 among sheep in the Big Horn Basin of Wyoming are presented. Analysis of serum samples obtained 3 to 6 months after the 2007 BT epidemic indicated that the percentage of sheep seropositive for anti-BTV antibodies closely matched morbidity rates for sheep within flocks, suggesting that there were few subclinical infections. Flocks separated by as little as 1 mile had substantial variation in infection rate. Rams were infected at a higher rate than ewes. There was no evidence of the causative virus successfully overwintering in the area.

See page 955

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