Show delay in immunizing hogs Hog may be costly it should be done shortly after weaning pigs prepared by tho the united states department of 0 ABrl culture service the objection of many farmers to having their swine herds immunized against hog cholera on account of cost cornea comes principally from those who watt wait until the hogs are full grown before using the treatment says dr T P white of the division of hog cholera control bureau of animal industry united states department of agriculture in sections where hog cholera Is more or less prevalent year after year doctor white adds the serum treatment Is the only safe method of i protection in those localities the tinmun izing of the herd should be a regular practice just as ca locking docking de horning and other common livestock operations As in the case of those operations that are practiced early in the life of the animal it Is preferable to immunize early lu in experimental tests aud and under certain field conditions pigs a few days old have been immunized against hog cholera in general practice 6 however opinion seems to favor immunization not long before or soon after weaning even at that period when the pigs may weigh from 30 to 40 pounds the amounts of serum and virus necessary to confer immunity are much less than for grown hogs he be cost Is correspondingly spon lower a pig of that age requiring in some cases only a third of the expense necessary to treat a full grown hog also the veterinarian finds find s it easier to handle young noun g pigs if a young pig dies the loss Is small compared with that of a larger hog |