May 2025

A 7-year-old ewe presents with abscessation of the supramammary lymph nodes. What is the most likely diagnosis?

1. Corynebacterium pseudotuberculosis

2. Mycoplasma mycoides

3. E. coli

4. Caprine arthritis and encephalitis virus

5. Trueperella pyogenes

  Corynebacterium pseudotuberculosis

The viscera from a group of 100 kg pigs are presented at a slaughter facility. The pigs were raised in a semi-outdoor management farm system with groups of 30-100 kg pigs kept on the same site. At slaughter, multifocal fibrotic lesions are seen in their livers and noticeable nematodes are present within the small intestine. You perform a fecal flotation on a fresh sample from the younger pigs. The results are shown in the image below. What treatment or management recommendation is most appropriate for this problem?

1. Depopulate and replace the herd

2. Quarterly treatment with praziquantel

3. Monthly administration of ivermectin

4. Disinfect the pasture

5. Examine the food sources of the pigs

  Monthly administration of ivermectin   

Which of the following is the causative agent of fowl cholera?

1. Reticuloendotheliosis virus

2. Chlamydophila psittaci

3. Mycoplasma gallisepticum

4. Pasteurella multocida

  Pasteurella multocida

A farmer comes to you with a new test for detection of mastitis in his heifers. He claims that both the sensitivity and specificity of his test is 90%. Mastitis has a prevalence of 5% in his herd. The negative predictive value (NPV) is approximately _________.

1. 72%

2. 35%

3. 3%

4. 99%

99%

A 2-year old female spayed Leonberger presents to you with hair loss around the face and eyes. A deep skin scraping is shown in the picture below. What is your diagnosis?

1. Demodex

2. Otodectes

3. Fungal pyoderma

4. Staphylococcus

5. Sarcoptes

Demodex

A 6-year old male neutered terrier mix weighing 10kg presents to you after having ingested 3 pieces of sugar-free gum containing xylitol. What bloodwork abnormality are you expecting to find?

1. Hyponatremia

2. Hypoglycemia

3. Hypernatremia

4. Hypocalcemia

5. Hyperglycemia

Hypoglycemia

You have diagnosed nitrate poisoning in a group of yearling cattle which were grazing Sudan grass (see photo). Which of the following is the most effective treatment?

1. Sodium thiosulfate

2. Vitamin B12

3. Digitalis

4. Methylene blue

5. Calcium gluconate

Methylene blue