DISEASES OF CATTLE 153 



and remedies strong enough for this purpose are liable 

 to injure the animal, but these parasites may be expelled 

 by pouring into the ear Carbolated Sweet or Cottonseed 

 Oil with favorable results. 



TUBERCULOSIS 



Cause : The bacilli of Tuberculosis thrive in animals, 

 especially those in a weakened condition, or when ex- 

 posed to atmospheric changes, unwholesome food, dark 

 and poorly ventilated stables. They gain entrance into 

 the body through the lungs or the intestinal canal. They 

 lodge in various portions of the lungs or intestines, and 

 multiply very rapidly, causing irritations and forma- 

 tions, nodules, cysts or abscesses. They are the means 

 of the bacillus entering the blood, which carries the 

 infection to other parts of the body, as the spleen, liver, 

 udder, womb, etc. Cows affected with generalized tuber- 

 culosis, that is to say, the infection is confined to not 

 only a small portion of the lungs, but also to any of 

 the above mentioned organs, etc., may give birth to a 

 calf having general tuberculosis at birth, or shortly 

 after, due to the cow's blood circulating through the 

 body of the calf before birth. 



Symptoms : This disease may pass a casual observer 

 unnoticed, although in some instances we notice a slight 

 cough, unthriftiness, dullness. The coughing is best 

 marked after taking a drink of water in the morning 

 and then being exercised. Some animals keep up in good 

 condition and look perfectly healthy while some get 

 emaciated, have constipation, variable appetite, and 

 sometimes growths or abscesses can be felt or seen in 

 the udder or glands of the body and neck. 



However, cattle showing any weakness, or the above 

 symptoms, should be tested for tuberculosis by a com- 

 petent veterinarian who has had the privileges of a 

 veterinary education and experience in the administra- 

 tion of tuberculin. 



