SPECIAL REPORT ON DISEASES OF CATTLE TEXT

of saliva is increased, the appetite is poor, the neck is stiff, so that it is painful to raise the head, and feed is swallowed with difficulty. In many cases the swelling of the glands, when submitted to proper treatment, disappears in a comparatively short time. In other cases, however, they remain enlarged, even after the animal recovers its appetite. In tuberculosis, lymphatic glands beneath the parotid glands are sometimes enlarged, thus causing the appearance of enlarged parotid glands. _Treatment._--A warm bran poultice, made by mixing bran with a hot 2 per cent compound cresol solution in water, should be applied on the swollen gland and kept in place by means of a bandage. Whenever the poultice has cooled it should be replaced by a new one. This treatment should be continued until the pain is less and the swelling is reduced or until there is evidence of pus formation, which may be ascertained by examining the surface of the gland with the fingers; and when, on pressing any part of the surface, it is found to fluctuate or "give," then we may conclude that there is a collection of pus at that place. It is well not to open the abscess until the fluctuation is well marked, as at this stage the pus or matter is near the surface and there is less trouble in healing the wound than if the pus is deep seated. The abscess should be opened with a clean, sharp knife. The poulticing should then be continued for two or three days, but the form of the poultice should be changed, by replacing the bran with absorbent cotton and pouring the compound cresol solution on the cotton. At all times the wound should be kept clean and the cavity injected once or twice daily with a solution of 1 dram of carbolic acid in 8 ounces of water. Under this treatment the pus may cease and the wound heal without complications. Saliva may issue from the orifice and result in the formation of a salivary fistula. This requires operative treatment by a qualified veterinarian. When poulticing fails to reduce the swelling or produce softening, the inflamed area may be rubbed once daily with camphorated oil, compound iodin ointment, or painted twice daily with Lugol's solution of iodin. The diet should be as recommended under Pharyngitis (p. 17). PHARYNGEAL POLYPI. Tumors form not infrequently in the pharynx, and may give rise to a train of symptoms varying according to their size and location. The tumor may be so situated that by shifting its position a little it may partially obstruct the posterior nares (nostrils), when, of course, it will render nasal breathing very noisy and labored. In another situation its partial displacement may impede the entrance of air into the larynx. In almost any part of the pharynx, but especially near the entrance of the gullet, tumors interfere with the act of swallowing. As they are frequently attached to the wall of the pharynx by a pedicel or stalk, it will be seen that they may readily be displaced in different directions so as to produce the symptoms before described. Enlarged postpharyngeal lymphatic glands are not rare in tuberculosis, and by pressing upon the wall of the pharynx and restricting the lumen of this organ they cause difficulty in both breathing and swallowing. Such enlarged glands may be differentiated from tumors by passing the hand into the cow's throat after the jaws are separated by a suitable speculum or gag. _Treatment._--The method of treatment in such cases is to separate the animal's jaws with an instrument termed a gag, and then, after drawing the tongue partially forward, to pass the hand into the pharynx and to twist the tumor gently from its attachment. One veterinarian who has had considerable practice in treating this form of disease scrapes through the attachment of the tumor gradually with his thumb nail. When the attachment is too strong to be severed in this way an instrument like a thimble, but possessing a sharp edge at the end, may be used to effect the same purpose, or the base of the tumor may be severed by the use of a crushing instrument known as an Ècraseur. CHOKING. Choking usually happens from attempting to swallow too large an object, such as a turnip, potato, beet, apple, or pear, though in rare cases it may occur from bran, chaff, or some other finely divided feed lodging in and filling up a portion of the gullet. This latter form of the accident is most likely to occur in animals that are greedy feeders. _Symptoms._--The symptoms vary somewhat according to the part of the gullet or throat in which the obstruction is. In most cases there is a discharge of saliva from the mouth; the animal coughs frequently, and when it drinks the water is soon ejected. The cow stops eating and stands back from the trough, the expression is troubled, breathing is accelerated, and oftentimes there is bloating as a result of the retention of gas in the paunch. These symptoms, however, are not always present, for if the obstacle does not completely close the throat or gullet, gas and water may pass, thus ameliorating the discomfort. If the obstruction is in the neck portion of the gullet, it may be felt as a lump in the left jugular gutter. _Treatment._--If the object is in the throat, it is advisable to put a gag in the animal's mouth, and, while the head is held in a horizontal direction by two assistants, to pass the hand into the pharynx, grasp the foreign body, and withdraw it gradually and steadily. When the substance is lodged in the upper part of the gullet, pressure should be made by an assistant in an upward direction against the object while the operator passes his hand into the pharynx, and if the assistant can not by pressure dislodge the substance from the gullet, the operator may by passing his middle finger above and partly behind the substance gradually slide it into the pharynx and then withdraw it by the mouth. The presence of an obstructing substance in the cervical (neck) portion of the gullet may be ascertained by passing the hand along the left side of the neck, when a hard and painless swelling will be found to indicate the presence of the foreign body. In such cases we must endeavor by gentle and persevering pressure with the thumb and next two fingers to slide the obstructing substance gradually upward to the pharynx. To facilitate this it is well to give the animal a half pint of raw linseed or olive oil before the manipulations described are commenced. When the substance has been brought into or nearly into the pharynx, then the mouth gag should be used, the tongue drawn partially forward with the left hand, and the right should be passed backward into the pharynx to withdraw the obstruction. When bran or chaff causes the trouble it is best to give a small quantity of oil to lubricate the walls of the gullet, and then by gentle and persevering pressure, to endeavor to separate and divide the mass and to work it downward toward the stomach. This will be assisted by pouring small quantities of oil and water down the animal's throat. It is not advisable to use the probang to push down any soft material, such as oats or chaff, as this generally condenses and renders firmer the obstructing substance by pressing its particles or elements together, so that it forms a solid, resisting mass which can not be moved. In some cases the foreign body, either because it is in the chest portion of the esophagus, and so beyond reach, or because too firmly seated, can not be dislodged from the neck by pressing and manipulating that part externally. In such event we must resort to the use of the probang. (Pl. III, figs. 2 and 3.) A probang is a flexible instrument and adapts itself to the natural curvature of the gullet, and if used cautiously there is not much risk of injury. Before passing the probang, a gag which has an aperture at each end, from which straps pass to be buckled at the back of the head below the horns, is introduced into the mouth. (Pl. III, fig. 4.) The probang should then be oiled, and, the head and neck being held in a straight line by two assistants, the tongue must be partly drawn out of the mouth, the probang cautiously passed along the roof of the mouth into the pharynx and thence into the gullet, through which it is passed down. If resistance is met, gentle and continuous pressure must be used, under the influence of which the object will generally in a short time pass into the stomach. One must be careful not to pass the probang into the larynx and thence into the windpipe, as an animal may readily be killed in this way. This accident is indicated by efforts to cough and by violently disturbed breathing. If such symptoms arise the probang must be withdrawn at once. To avoid a wrong passage, the end of the tube should be pressed very slowly through the throat until its presence in the esophagus is assured. After it is once in the esophagus care is still necessary, because the walls of this tube may easily be torn. Some writers have advised that when the obstruction is lodged in the cervical (neck) portion of the gullet it should be struck with a mallet, to crush it and thus alter its shape, so that it may easily slip down into the stomach. If the obstructing substance is hard, this will be a dangerous operation, but if soft--as in the case of a ripe pear, for example--this procedure may be safely adopted. In all cases, if pressure applied on the neck fails to move the obstruction and the probang also fails to move it, it may be divided by a subcutaneous operation, or the gullet may be opened and the obstructing substance removed through the wound. In such cases the assistance of a veterinarian or a surgeon must be obtained. WOUNDS AND INJURIES OF THE GULLET. Sometimes the walls of the gullet may be more or less lacerated or abraded by the rash and too forcible use of the probang, and the animal consequently swallows with pain and difficulty. In such cases dry feed must be withheld for five or six days, so as to allow the injured parts to heal, and the diet must be limited to linseed tea, hay tea, and thin oatmeal gruel and molasses. The same kind of diet must be fed after the operation of cutting into the gullet has been performed. Sometimes the gullet is ruptured and lacerated to such an extent that treatment of any kind is hopeless. This has been known to occur when the handle of a pitchfork or buggy whip has been pushed down a cow's throat to remove an obstruction. When such treatment has been applied it is best to slaughter the animal without delay, as the flesh may be utilized so long as there is no fever or general disease, and remedial treatment would be hopeless. In this connection it may be mentioned that whatever substitute may be used for a probang, which sometimes is not at hand, it should be flexible and should possess a smooth surface. A piece of new rope, with the end closely wrapped and waxed and then oiled, or a piece of thin garden hose, or a well-wrapped twisted wire may be used in emergencies. DISEASES OF THE STOMACHS. ACUTE TYMPANITES (HOVEN, OR BLOATING). Tympanites is a distention of the rumen or paunch with gases of fermentation, and is manifested outwardly by swelling in the region of the left flank. _Causes._--Tympanites may be caused by any kind of feed which produces indigestion. When cattle are first turned into young clover they eat so greedily of it that tympanites frequently results. Turnips, potatoes, cabbage, or the discarded pulp from sugar-beet factories may also cause it. Middlings and corn meal also frequently give rise to it. Care is necessary in turning animals into fields of clover or stubble fields in which there is a strong growth of volunteer grain. It is always better to keep them from such pasturage while it is wet with dew, and they should be taken out when they have eaten a moderate quantity. When cattle are fed upon pulp from sugar beets, germinated malt, etc., they should be fed in moderate amounts until they have become accustomed to it, as any of these feeds may give rise to severe bloating. An excessive quantity of any of the before-mentioned feeds may bring on this disorder, or it may not be caused by excess, but to eating too hastily. Sometimes the quality of the feed is at fault. Grass or clover when wet by dew or rain frequently disorders digestion and brings on tympanites; frozen roots or pastures covered with hoar frost should also be regarded as dangerous. When feed has been eaten too hastily, or when it is cold and wet, the digestive process is imperfectly performed, and the feed contained in the paunch ferments, during which process large quantities of gas are formed. The same result may follow when a cow is choked, as the obstruction in the gullet prevents the eructation or passing up of gas from the stomach, so that the gas continues to accumulate until tympanites results. _Symptoms._--The swelling of the left flank is very characteristic, as in well-marked cases the flank at its upper part rises above the level of the backbone, and when struck with the tips of the fingers emits a drum-like sound. The animal has an anxious expression, moves uneasily, and is evidently distressed. If relief is not obtained in time, it breathes with difficulty, reels in walking or in standing, and in a short time falls and dies from suffocation. The distention of the stomach may become so great as to prevent the animal from breathing, and in some instances the case may be complicated by rupture of the stomach. _Treatment._--If the case is not extreme, it may be sufficient to drive the animal at a walk for a quarter or half an hour; or cold water by the bucketful may be thrown against the cow's sides. In some cases the following simple treatment is successful: A rope or a twisted straw band is coated with pine tar, wagon grease, or other unsavory substance and is placed in the cow's mouth as a bit, being secured by tying behind the horns. The efforts of the animal to dislodge this object result in movements of the tongue, jaws, and throat that stimulate the secretion of saliva and swallowing, thus opening the esophagus, which permits the exit of gas and at the same time peristalsis is stimulated reflexly. In urgent cases the gas must be allowed to escape without delay, and this is best accomplished by the use of the trocar. The trocar is a sharp-pointed instrument incased in a cannula or sheath, which leaves the sharp point of the trocar free. (See Pl. III, figs. _5a_ and _5b._) In selecting the point for using the trocar a spot on the left side equally distant from the last rib, the hip bone, and the transverse processes of the lumbar vertebrÊ must be chosen. Here an incision about three-fourths of an inch long should be made with a knife through the skin, and then the sharp point of the trocar, being directed downward, inward, and slightly forward, is thrust into the paunch. (Pl. I.) The cannula or sheath of the trocar should be left in the paunch so long as any gas continues to issue from it. If the cannula is removed while gas is still forming in the paunch and the left flank becomes considerably swollen, it may be necessary to insert it again. It is well, accordingly, to observe the cannula closely, and if gas is found to be issuing from it, it should not be removed. When gas issues from it in considerable quantities the sound accompanying its escape renders the exact condition obvious. It is occasionally necessary to keep the cannula in the stomach for several hours. When this is necessary a piece of stout cord should be passed round the neck of the cannula immediately below the projecting rim and then be passed round the animal's body and tied in a secure knot, and a careful attendant must remain with the cow during the entire period that the instrument is in place. The rim surrounding the mouth of the cannula should be in contact with the skin. Whenever the person in charge of the cow is convinced that gas has ceased to issue from the cannula the instrument should be removed. The trocar is to be used only in extreme or urgent cases, though everyone who has had experience in treating indigestion in cattle realizes that he has saved the lives of many animals by its prompt application. When the tympanitic animal is not distressed and the swelling of the flank is not great, or when the most distressing condition has been removed by the use of the trocar, it is best to use internal medicine. Two ounces of aromatic spirits of ammonia should be given every half hour in a quart of cold water; or half an ounce of chlorid of lime may be dissolved in a pint of tepid water and the dose repeated every half hour until the bloating has subsided; or 1 ounce of creolin in 2 quarts of tepid water may be given at one dose or carefully injected through the cannula directly into the paunch to stop fermentation and the consequent formation of gas. It is generally necessary to give a moderate dose of purgative medicine after bloating has subsided, as animals frequently show symptoms of constipation after attacks of indigestion. For this purpose 1 pound of Glauber's salt may be used. The animal should be fed carefully upon easily digested food for several days after the bloating has subsided, so that all fermenting matter may pass out of the stomach. CHRONIC TYMPANITES. Cattle, especially those that have been kept in the stable all winter, are liable to suffer from chronic tympanites. In this form they bloat up after feeding, but seldom swell so much as to cause any alarm. The chronic form of indigestion may also follow an acute attack like that previously described. This is also a symptom of tuberculosis when the lymphatic glands lying between the lungs are so enlarged as to press upon and partly occlude the esophagus. It may develop in calves as a result of the formation of hair balls in the stomach. _Treatment._--Treatment should be preceded by a moderate dose of purgative medicine: 1 pound of sulphate of magnesia (Epsom salt) or sulphate of soda (Glauber's salt), half an ounce of powdered Barbados aloes, 1 ounce of powdered ginger, 1 pint of molasses. The salts and aloes should be dissolved by stirring for a few minutes in 2 quarts of lukewarm water, then the molasses should be added, and after all the ingredients have been stirred together for about 10 minutes the dose should be administered. After the operation of the purgative it is generally necessary to give some tonic and antacid preparation to promote digestion, which is imperfectly performed in such cases. The following may be used: Powdered gentian, 3 ounces; powdered bicarbonate of potash, 3 ounces; powdered ginger, 3 ounces; powdered capsicum, 1 ounce. Mix and divide into 12 powders, one of which should be given three times a day before feeding, shaken up with a pint and a half of water. It is also advantageous in such cases to give two heaped teaspoonsfuls of wood charcoal, mixed with the animal's feed three times a day. The animal should also go out during the day, as want of exercise favors the continuance of this form of indigestion. If the dung is hard, the constipation should be overcome by feeding a little flaxseed twice daily or by giving a handful of Glauber's salt in the feed once or twice daily, as may be necessary. Roots, silage, and other succulent feeds are useful in this connection. If tuberculosis is suspected as the cause of chronic bloating, a skilled veterinarian should make a diagnosis, using the tuberculin test if necessary. Until it is settled that the cow has not tuberculosis, she should be kept apart from the other members of the herd. DISTENTION OF RUMEN OR PAUNCH WITH FEED. This form of indigestion is caused by the animal gorging itself with feed, and arises more from the animal's voracious appetite than from any defect in the quality of the feed supplied to it. The condition is, however, more severe if the feed consumed is especially concentrated or difficult of