Navle Prep Questions Study Guide Rated A+

What is the potential udder fate of goats infected with caprine arthritis encephalomyelitis virus? A - The udder is not affected B - Bluebag C - Gangrene D - Hardbag {Ans: D CAEV is a retrovirus and when it affects the udder it will cause fibrosis and result in a firm udder with agalactia. Treatment is ineffective and the goat should be culled. The disease is usually subclinical but can cause arthritis in adults and encephalitis in kids.}A commercial pig farm experiences an explosive outbreak of respiratory disease with high mortality, primarily in young pigs under 6 months of age. Affected pigs show severe respiratory distress, fever up to 107°F (41.5°C), anorexia, and reluctance to move. Some animals display open-mouth breathing with a blood-stained, frothy nasal and oral discharge. On necropsy, the lungs are bilaterally dark and swollen and ooze bloody fluid from the cut surface. Which one of the following choices is the most likely diagnosis? A - Actinobacillus pleuropneumoniae B - Fusobacterium necrophorum C - Mycoplasma hyopneumoniae D - Haemophilus parahaemolyticus E - Swine influenza {Ans: A This is a classic scenario of an outbreak of pleuropneumonia, caused by Actinobacillus pleuropneumoniae.}When a foal is being treated