In this respect the serum gotten up by the U. S. Department of Agriculture has done more than anything else to eradicate the disease.
There are two methods of inoculating the hog, the single and the double.
In the double method the anti-toxin is injected into the hog and also a quantity of the disease germs, this produces a lasting immunity.
In the single method the anti-toxin alone is used, this only produces a transient immunity unless the hog is soon after exposed to the disease, in which case the immunity becomes lasting.
The single method should be used where cholera has already broken out in a herd, to protect the animals which have not yet acquired the disease; in all other cases the double method should be used.
A farmer should not attempt to give the serum unless he has had considerable experience with it and seen competent people properly administer it; otherwise call in a Veterinarian, his charges will be less than the value of the hogs that would otherwise be lost.
PART VI.
Diseases of Poultry
CHAPTER I.
Doses and Methods of Preparing the Remedies for Use.
One drop or PART of a DROP is quite sufficient as a dose for an ordinary fowl. One drop of any remedy put into a teaspoonful of water or milk, and this put into a teacup so as to be thoroughly mixed, is a sufficient dose for FIVE FOWLS of full size, or ten chickens.
Where a flock or several fowls are to be treated, drop ten drops of the proper remedy into a cup, to which add ten teaspoonfuls of water, milk or curdled milk, and after stirring it thoroughly with a perfectly clean spoon, mix this with the meal, grain or bread, or whatever food is given them. If the quantity of fluid should not be sufficient to properly moisten the food, more can be added without detriment, provided the mass be thoroughly stirred and mixed before wetting the food. This would be enough for fifty fowls. Some will get more and some less, of course; but each will probably get enough to answer a curative purpose, and none will get so much as to be injurious.