1. What is the specific cause of distemper? Give the symptoms and
treatment.

2. What are the different methods of spreading influenza? Give the symptoms
and treatment.

3. Give the cause and methods of controlling glanders.

4. Give the cause and treatment of contagious pleuropneumonia.




CHAPTER XXX

INFECTIOUS DISEASES OF CATTLE


[Illustration: FIG. 117.--A case of "lumpy jaw."]

ACTINOMYCOSIS, "LUMPY JAW."--This is an infectious disease that is
characterized by the formation of tumors and abscesses (Fig. 117), and the
destruction of the infected tissues. The disease is common in cattle and
usually affects the bones and soft parts of the head. In the United States,
where the disease is known as "lumpy jaw" the jawbone is commonly affected.
In European countries the disease frequently involves the tongue, and the
term "wooden tongue" is applied to it. The disease may affect regions of
the body other than the head. Actinomycosis of the lungs sometimes occurs.
Swine and horses may be affected by this disease.