It has been said, in a general way, that close unwholesome stables, hard work, and bad provender, sudden changes from cold and wet weather to hot close stables, hard work, and insufficient keep, and, in short, any thing that will weaken the animal considerably, is likely to produce glanders or farcy. Hence post and stage horses are particularly obnoxious to this disease.
Mr. Russel, of Exeter, had, for many years, some glandered teams of horses constantly working from Plymouth to Exeter. But they were worked with moderation, well fed, and taken great care of. I attended these teams for several years, the horses generally looked well, and in excellent condition. Many of them lasted four or five years; and some fell off after a few months.
The symptoms of glanders are—1st, A discharge of glairy matter from one or both nostrils; generally from one only, and more frequently from the left than from the right nostril. 2d, A swelling of the glands or kernels under the jaw, or between the branches of the lower jaw, and generally on the side of the jaw corresponding with the affected nostril. In all other respects the animal is generally in health, and often sleek and in good condition.
Sometimes, however, the glanders is accompanied by a disorder of the skin, named farcy, and then the horse’s general health is often affected. Farcy has been considered, by many authors, as a distinct disorder. I have therefore noticed it in a separate article (see Farcy), though of opinion that it is always a symptom of glanders, whether it appear in a local, or in a constitutional form.
Glanders has been divided into two stages, the acute and the chronic, or the first and second stage. The acute glanders is generally attended with acute farcy, such as chancrous ulceration about the lips, face, or neck, with considerable and painful swellings on different parts, some of the swellings appearing as a corded vein: ulceration and swelling of the hind leg or sheath, or testicles, and sometimes of the fore leg, with corded veins, and farcy buds on the inside of the limb. The acute glanders often spreads rapidly, and either destroys the animal, or renders him such a pitiable and hopeless object, that the proprietor is generally induced to have him knocked on the head.
Chronic glanders is generally very mild in the first stage of the disorder, and does not affect the appetite, or the general health and appearance of the animal. Such horses, when properly fed and taken care of, and worked with moderation, will often continue in regular work for several years.
I have been in the habit of attending several teams of glandered horses since I left the army, and have known them last four or five years. Sometimes, however, they would go off in a few months; and whenever a glandered horse fell off much, and became unequal to his work, he was destroyed. Many glandered horses have been known to get rid of the disorder while working in these teams; and sound horses that have been put in occasionally, to fill up the teams, especially old horses, have escaped the disorder. It is this circumstance, as I have before stated, that has led many to believe that the glanders is not contagious.
The second stage of glanders is marked by ulceration within the nostrils, or an appearance in the matter which indicates ulceration, though sometimes too high up to be seen. The matter is in larger quantity, more glutinous, sticking about the margin of the nostril and upper lips, and sometimes obstructing the passage of air, so that the horse makes a snuffling noise in breathing. The matter is sometimes streaked with blood, and the horse sometimes bleeds from the nostrils in working. When this happens in the first stage of the disorder, however early it may be, it indicates the approach of the second stage. The matter begins to have an offensive smell, which it scarcely ever has in the first stage, though an offensive smell is by many supposed to be a decisive mark of glanders. In the second stage the matter generally runs from both nostrils; the glands under the jaw become larger, harder, and fixed more closely to the jaw-bone. They are also generally more tender than in the first stage; the inner comers of the eyes are mattery. The horse loses flesh and strength, stales more than usual, coughs, and at length dies in a miserable condition, generally farcied as well as glandered. It is with this disease as it was formerly with small pox inoculation, and is now with vaccination. If a person happens to meet with one or two cases, or suppose it were half a dozen, of a horse escaping the glanders after standing in a stable with one that is glandered, he thinks himself fully warranted in concluding that the disease is not contagious. Satisfied with this decision, he gives himself no further trouble about it, and pays no attention to any thing that may be said or written in opposition to his own opinion.
It is a remarkable circumstance, that glanders cannot be communicated by applying the matter which is discharged from the nose of a glandered horse to the nostrils of a sound horse, even though a piece of lint soaked in the matter be put up the nostrils, and kept in contact with the pituitary membrane for a short time; or even if the matter be thrown up the nostrils with a syringe. But, if the smallest quantity of matter be applied in the way of inoculation, either to the membrane of the nostrils, or to any part of the body, a glanderous ulcer will be produced, from which farcy buds and corded lymphatics will proceed. After a few weeks the poison will get into the circulation, and the horse will be completely glandered. The circumstance of glanders not being communicated by applying matter to the nostril, enables us to account for a horse escaping the disorder, as he sometimes does, after being put into a glandered stable, or standing by the side of a glandered horse. I believe, however, that glanders is frequently communicated by (accidental) inoculation; and that there is only one other way in which it can be communicated, that is, by swallowing the matter which flows from the nose of a glandered horse.—Vide Blaine.
A horse affected with glanders may inoculate himself, and thereby produce the farcy. I have known this happen to a horse while at grass. The horse had an itching in his hind leg, which led him to rub and bite the part, and, at the same time, rub on it the glanderous matter which flowed from his nostril. The possibility of this circumstance taking place may be easily proved by inoculating a glandered horse, in any part of his body, with some of his own matter. There are many ways in which a sound horse may be accidentally inoculated with the matter of glanders, for the slightest scratch in any part of the body is sufficient. Horses that are cleaned with a curry comb are very liable to be scratched in those parts where the bones are prominent, such as the inside of the hock or knee, the shank bones and the head. To such scratches glanderous matter may be applied by the hands of the groom after he has been examining the nose of a glandered horse, or wiping off the matter from his nostrils; or by the horse himself transferring glanderous matter from the nose of a diseased horse, or from the manger, or other part where any matter has been deposited, for horses are very fond of rubbing their noses against the manger or stall, and a glandered horse will generally try to rub off the matter from his nose against the manger, the rack, the stall, or against another horse; and if a sound horse happen to stand by one that is glandered, they will often be seen nabbing or gently biting each other, or rubbing noses. In short, having proved that glanders is thus communicated, we can conceive a variety of ways in which a horse may be accidentally inoculated.