Pigs Flashcards
Testing for Classical Swine Fever can be complicated by the presence of which of the following viruses in swine?
- Vesicular Stomatitis virus
- Influenza type A virus
- Bovine Viral Diarrhea (BVD)
- Porcine Reproductive and Respiratory
Syndrome virus (PRRS) - Porcine Circovirus Type 2 (PCV2)
Answer: Bovine Viral Diarrhea
Explanation
The correct answer is Bovine Viral Diarrhea (BVD).
Although BVD virus does not usually cause disease in pigs, pigs do get exposed to the virus and seroconvert. Both BVD and CSF are Pestiviruses from the family Flaviviridae.
Antibody production in pigs to BVD can cross react with some CSF assays. This can create some problems because CS is considered a foreign animal disease in the U.S.
***PowerLecture: Foreign Animal Diseases
As an international consultant, you are called to examine a group of feeder pigs on a farm in West Africa. The pigs have high fever, inappetence, and hemorrhages in the skin of the ears. Several have died acutely, and you find petechial hemorrhages on internal organs. The clinical signs and lesions look like classical swine fever or erysipelas, but there is one other disease you need to rule out which also has similar signs. What is this other disease?
- Porcine parvovirus
- Swine influenza
- Leptospirosis
- African swine fever
- Swine dysentery
Answer: African swine fever.
Explanation
AS acts in a similar manner to classical swine fever. It is highly virulent, carried by bush pigs and warthogs, and can also be transmitted by soft ticks.
***PowerLecture: Foreign Animal Diseases
