INFECTIOUS ENTERO-HEPATITIS OF TURKEYS 125 
be dissolved in water and the solution mixed with a feed to be given 
early in the morning. Turkeys on range would require special at- 
tention for the successful operation of the above measures. Isola- 
tion or disposal of birds showing symptoms of disease is of the first 
importance in guarding against a further spread of the malady. 
Thorough cleaning and disinfection of quarters and yards will tend 
to keep the outbreaks in check. Carbolic acid in 5 per cent solution, 
or compound cresol in 3 per cent solution are efficient disinfectants. 
Prevention. Prevention of entero-hepatitis in infected com- 
munities is more difficult than the prevention of other diseases of 
domesticated birds, because of the fact that turkeys range over an 
area of several miles in diameter when allowed to run at large as is 
the usual custom in this country. The possibility of healthy flocks 
becoming infected by feeding on ground contaminated by diseased 
flocks is very apparent and renders preventive measures under such 
conditions rather difficult of execution. Where turkeys are con- 
fined to a limited area or do not come in contact with other flocks 
which harbor the parasite, simple precautionary measures may in- 
sure freedom from the disease. The main channel of entrance is 
through the introduction of birds which come from infected flocks. 
Particular care in selecting purchased birds should be exercised. 
The fact should be established beyond doubt that they are of a 
flock which has shown no symptoms of disease and have not been 
associated with neighboring diseased flocks. A period of quarantine 
extending over 30 days is also advisable before newly acquired tur- 
keys are placed with the home flock. 
Where the disease has been prevalent on premises to such an ex- 
tent as to make the raising of turkeys unprofitable, it is advisable 
to dispose of the entire lot and allow a period of approximately two 
years to elapse before restocking. Local conditions may modify or 
suggest preventive measures. Limeing or plowing the runs or home 
feeding yards is indicated. The principal fact to be considered is 
that the disease must first be introduced, either by infected birds 
(almost invariably the turkey) or by mechanical carriers, such as 
persons coming from infected farms and carrying the causative par- 
asite on their shoes. Wild birds may possibly serve as carriers. 
Other agencies could be mentioned by means of which the organism 
of entero-hepatitis might be carried from infected farms; however, 
these are of minor importance and cannot easily be guarded against. 
Eggs for hatching, from infected turkeys may be dipped in 95 per 
cent alcohol to destroy any parasites which may have become at- 
