6 
1'he Colorado Experiment Station. 
gray to red or almost black. Some of these glands may be found 
along the intestines on the outside, (mesenteric) beneath the skin, 
high up on the inside of the thighs, (inguinal), near the lungs, 
(bronchial and mediastinal), and in the neck near the angle of tlte 
jaw. 
TREATMENT. 
Although many “cures” for hog cholera have been advertised, 
none of them have stood the test and farmers should be on their 
guard against proprietary remedies which are guaranteed to not 
only prevent hog cholera, but cure it as well, and will do neither. 
HOG CHOLERA IN THE SAN LUIS VALLEY. 
The plan of control adopted in the San Luis Valley, Colorado, 
succeeded and is to be recommended. In this instance, the chief 
consideration was given to quarantine and disinfection. Anti-hog 
cholera serum was used freely, but virulent blood was not used for 
simultaneous vaccination. In the twelve months prior to February, 
1913, fully 60 per cent of hogs in the San Luis Valley died of chol¬ 
era and the loss was estimated at $400,000. One year later we find, 
as the result of organization, efficient veterinary supervision and 
hearty co-operation, that there are but two farms in the valley 
where cholera exists. These farms are now under close quarantine 
and the disease is practically eradicated. 
REPORT OF WORK DONE BY THE MONTE VISTA HOG GROWERS’ 
ASSOCIATION FROM FEB. 10, 1913, TO FEB. 1, 1914. 
Number of visits. 8 23 
Average visits per day. 2.34 
Number of visits for other purposes than treating hogs. 313 
Places on which dead hogs or other dead animals were found. 58 
Number of hogs vaccinated.2,940 
Number of these hogs in infected or exposed herds.2,410 
Number of hogs that died after vaccination. 3 67 
Per cent of hogs that lived.87% 
More than one-half the loss occurred in three herds. In these the 
disease had existed for two weeks or more, the hogs were in a weakened 
condition, lousey, constipated, and received almost no care, both before 
and after being vaccinated. 
In October we had difficulty in getting serum owing to the extensive 
outbreaks of hog cholera throughout the middle west states, and to this 
trouble was due our greatest losses. Even then, if the sick hogs had been 
isolated, the loss would have been greatly reduced, but the owners were 
too busy to give the hogs proper attention and suffered accordingly. The 
chief value in the use of the serum is early administration. It has been 
proven beyond a doubt that once the disease has gained headway, treat¬ 
ment is of no value. 
The prime factor in the control of hog cholera is sanitation and care 
of the hog. Keep the hogs in a healthy condition by the use of properly 
balanced feed. Avoid sudden changes of feed—they oft-times cause bowel 
