Ovin/caprin

Question 1

A farmer recently purchased a sheep from a salebarn. The sheep soon became ill, with progressive depression, lethargy, and inappetance.
He had respiratory problems, breathing hard with abdominal effort, and died after three days with a frothy nasal discharge just prior to death.

At necropsy, the lungs had the appearance shown below.

What was the most likely cause of death?

Answer 1

C - Mannheimia haemolytica

Question 2

Several younger sheep in a large herd have died suddenly with a diagnosis of infectious necrotic hepatitis secondary to fluke infestation.

Which choice is the most practical and effective control measure you can take next to prevent future cases?

A - Vaccinate all animals with Clostridium novyi toxoid
B - Clostridium hemolyticum bacterin for animals under 3 years
C - Clorsulon antihelmintic for whole herd
D - Treat ponds with copper sulfate molluscicide against lymnaeid snails
E - High-dose penicillin for clinical cases

Answer 2

A - Vaccinate all animals with Clostridium novyi toxoid