DISEASES OF SWINE 431 



it IL two. In acute attacks, or when the inflamed parts become 

 gangrenous, treatment is of no use. 



CHRONIC PNEUMONIA, OR COUGHING. 



During the past year a number of cases of cough or chronic 

 pneumonia among swine have been reported from different parts of 

 the State. The disease has also been studied in the vicinity of the 

 Station. While this disease is most frequently reported as attack- 

 ing pigs or shoats, it also attacks older animals but to a less extent. 

 Chronic pneumonia usually makes its appearance during a dry 

 period, when there is considerable dust. The dust in pens or sleep- 

 ing quarters seems to be particularly bad, probably because it con- 

 tains the germs of infection. This dust irritates the lungs, causing 

 the pigs to cough a deep, moist cough. While the pig does not 

 seem to be seriously sick, it falls away in flesh, becomes unthrifty, 

 and in some cases death follows. As the disease progresses the 

 coughing becomes more pronounced and there is labored breathing, 

 particularly when the animal is exercised. Examination after death 

 reveals a chronic inflammation of the lungs. The affected portions 

 of the lung are solidified and often contain small pockets filled with 

 pus. In a few cases cavities of considerable size are found filled with 

 thick, cheesy pus. 



Treatment. As soon as a case of coughing occurs among 

 swine, the healthy pigs that show no signs of the disease should be 

 removed from the ailing pigs and placed in clean, uninfected quar- 

 ters. The infected quarters should be cleaned thoroughly, and all 

 bedding and other litter removed and burned. The floor, walls and 

 all parts of the infected quarters should be thoroughly saturated 

 with five per cent solution of carbolic acid or creolin in water. This 

 should be repeated in a week. The ailing pigs should be bedded 

 with forest leaves or some other material free from dust. Swine 

 suffering from chronic cough should be well fed with a variety of 

 easily digested, nutritious food and should be given some tonic con- 

 dition powder. That recommended by the United States Depart- 

 ment of Agriculture is excellent. In case hog houses or yards be- 

 come infected with the germs of chronic pneumonia, sows about to 

 farrow should be removed to clean, uninfected quarters, and the 

 young pigs should not be allowed in infected quarters until they are 

 pretty well grown, when the danger of contracting the disease is 

 slight. (Va. B. 189.) 



BRONCHITIS. 



Causes. These are the same as in common cold or sore throat. 

 Bronchitis is frequently caused by irritation from dust or parasites. 



Symptoms. In the acute form the body temperature is ele- 

 vated and the appetite impaired. The breathing is usually distressed 

 and coughing frequently occurs. The disease does not run a definite 

 course and may become chronic if the exciting causes are kept up. 

 When this occurs, the pig does not thrive as it should and if the air 

 passages are irritated in the least by dust, etc., it will cough violently. 

 Coughing is especially prone to occur upon leaving the bed or 

 after exercise. Pigs seldom die of this affection. Treatment. This 



