CHAPTER XXX. 



DISEASES OF THE BREATHING ORGANS. 



CATARRH. 



Sheep suffer from colds or common catarrh like other animals, 

 but it is rarely caused by exposure to extreme cold. Rather should 

 we look for it as the result of travel, the irritation of dust, and 

 the breathing of bad air in confinement. 



The symptoms are running of the eyes and nose, at first of a 

 watery fluid, and afterwards a thick or gummy and adherent 

 matter around the nostrils. 



Treatment. Restoration to pure air and good conditions is all 

 that is required, but debility resulting from prolonged catarrh 

 will need tonics such as have been already suggested in connection 

 with anaemia. 



NASAL GLEET OR OZOENA. 



A persistent discharge of variable consistence may be mistaken 

 for catarrh when it is caused by the irritation of parasites. The 

 sheep bot or grub lodges in the chambers, high up, as does another 

 parasite known as a pentastome, and while it remains no external 

 measures will be of use. 



Treatment. Sometimes the sneezing induced by a pinch of 

 snuff will dislodge the enemy, but more often a safe refuge has 

 been chosen, and we have to wait for the time of year when these 

 creatures voluntarily quit, in order to undergo another stage of 

 development. Preventive measures, then, must be relied upon. 

 The bot fly must be prevented from ovipositing in the nostril, 

 by causing the sheep to smear the parts with such things as fish 

 oil and tar when seeking food through auger holes made in a plank 

 to cover the provender in a trough. When sheep bunch together, 

 with heads turned inward in hot weather, it is to avoid the atten- 

 tions of the female fly. Syringing has been tried and inhalations 

 of sulphur fumes, but success has not attended these methods. 

 The numbers are kept down by the smearing methods above 

 advised. 



