2G0 THE DISEASES OF CATTLE. 



CHRONIC BRONCHITIS 



Is frequent. There is a persistent hacking cough, gen- 

 eral weakness, a tendency to slight febrile attacks, ema- 

 ciation, and inability to undergo exertion. The disorder 

 may be associated with asthma, lung inflation, and con- 

 solidation of parts of the lung. Although in many cases 

 tonics, quiet, and digestible food will do a great deal of 

 good, slaughter is the best course. The following draft 

 may be given : 



Carbonate ammonium, 3 drams, liquor strychnin* hy- 

 drochloratis, 2 drams, spirit chloroform, -J oz., water in 

 proportion, twice daily. 



PARASITIC BRONCHITIS, 



Also called hoose or husk, frequently occurs in calves 

 under a year old, causing considerable mortality. It is 

 caused by a worm known as the ' Strongylus micrurus/ 

 which is found also in the alimentary canal and in the 

 heart and blood vessels. It is peculiar to wet seasons and 

 low, badly drained lands. Calves kept out late in the 

 autumn, on fields on which animals suffering with the 

 disease have grazed, are especially liable to it. The cough 

 is very forcible and has a special hacking character. It 

 causes the expulsion of stringy mucus, in which parasites 

 or their ova may be seen with a low power of the micro- 

 scope, and sometimes with the unaided eye. The calves 

 become emaciated and there may be diarrhea. The worms 

 are present in the bronchial tubes and air passages, im- 

 peding respiration. 



Remedy. — Place the severely affected in comfortable 

 quarters. The bedding on which the discharges fall should 

 be frequently removed and destroyed. Place the slightly 

 affected on high and dry pastures. Pure water and rock 

 salt. Fumigation with the gas from burning sulphur and 

 iodine is strongly recommended, but it should be used 



