I{eat11<·7t·y Agiicziliuml Experiment Station 29
what it was. These results can be attributed to improved sani-
tation, modification in the administration of serum and virus
for permanent immunization against hog cholera and the ad-
ministration of a bacterin made from micro-organisms isolated
from infected individuals.
, Biological Products. The distribution of anti-hog cholera.
"serum during the year amounted to 1,549,650 cubic centime-
ters, and hog cholera virus to 34,040 cubic centimeters.
Blackleg vaccine (powdered form) is furnished to the Ex-
periment Station by the Bureau of Animal Industry, United
States Department of Agriculture, for free distribution, and
6,935 doses were distributed to the farmers of the state and 140
doses to farmers outside the state.
Reports and investigations during the last few months
indicate that roup and chicken pox are very prevalent in poul-
try thruout· the state. From October 6 to Deceniber 31, 3,062
doses of vaccine for the prevention and cure of this disease
were prepared and sent to poultrymen. Reports following the
use of this vaccine indicate that the results on the whole have
been most satisfactory.
\ Botulinus Antitoxin. During the fall of this year, many
cases of so-called forage poisoning, or botulism, have occurred
among cattle, horses and mules. The disease has invariably _
occurred following the feeding of corn and corn stover. This
has been so generally the observation that it would seem only
reasonable to suspect that the source of the trouble lies in the
corn and fodder. Seventeen thousand six hundred cubic centi-
meters of botulinus antitoxin have been distributed for the
cure and prevention of this disease and in most instances the
administration of the antitoxin was followed by beneficial re-
sults, t·hus indicating that so-called forage poisoning as occur-
ring in Kentucky at the present time is botulism and that the
method of preventing this disease lies in the use of botulinus
antitoxin. It has been shown from experience that a consider-
able number of animals in which forage poisoning has been the
diagnosis, have recovered following the administration of large
doses of magnesium sulphate. Diagnosis ofthe eases that have