Beretning om veterinærvæsenet i Norge for året 1891.

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The Chief Surgeon of the civil Veterinary Department, under date the 28th
October has issued the following instructions.
Instructions for recognizing and preventing Swine fever.
As there have lately broken out amongst a small stock of pigs in Christiania,
several cases of the malignant, and extremely infectious swine fever
(or swine diphtheria), which is widely spread in America and most
European countries, and as this disease is not known to have previously
appeared in this country, and therefore presumably is not exactly known to
our Veterinary Surgeons and countrymen (farmers), short instructions are issued
herewith to enable them to recognize and prevent this epizootic sickness.
Swine fever at the commencement attacks, mostly, young pigs. If the
epidemic has raged for some time, full grown pigs are likewise usually attacked.
Most animals die from the complaint.
The animals attacked lose their appetites, become weak and dull, prefer
lying down, crouch up in a corner of the hutch or sty and tremble all over
(feverish shivering fits). The eyes are dull, and often closed by matter. The
breathing is fast and troublesome, the voice hoarse, accompanied often by
cough. A dark bluish-red colour often appears on the ears, down the neck,
round the tail and on the thighs. After a while loose stools are usually
passed, which occasionally are of a bloody nature. The animal becomes thin,
exhausted, and falls down on attempting to rise. Finally it often happens
that convulsions occur.
When the mouth is opened large and small yellowish incrustations will
usually be observed on the tongue, the gums, the inside of the cheeks, the
tonsils, and down the arches of the palate in the gullet. Occasionally similar
greyish-black incrustations will be seen on the teats and paps of the sow.
On dissecting and examining the dead animal the large intestines ought
to be carefully inspected. If the animal has been ill for some days large and
small greyish-yellow incrustations will be noticed, these are closely attached to
the mucous membrane as transverse borderings, or plates, or small buttons.
Occasionally the incrustations are thrown off, leaving sores which will be seen.
If the disease has lasted long, there may be scars. In between the incrusta-