JO 0( 



1918.] 



Drenching Sheep. 



633 



DRENCHING SHEEP. 



W. A. N. Robertson, B.V.Sc, Chief Veterinary Officer. 



The drenching of a large number of sheep is a somewhat lahorioiis 

 operation, and consequently the work is often postponed to some indefi- 

 nite date. 



The acoompanying illustra- 

 tion, from the Journal of 

 Agricultu?-al Research, shows 

 a device which was con- 

 structed by Mr. Maurice C. 

 Hall, formerly Assistant Zoo- 

 logist in the Bureau of 

 Animal Industry, U.S.A. The 

 gradations on the glass tube 

 have been adapted to suit 

 Australian conditions. 



A solution of the medica- 

 ment to be used is placed in 

 the small water-tight keg. Near 

 the bottom is a small tap, to 

 which is attached one end of a 

 length of rubber tubing; the 

 other end is attached to one 

 of two glass tubes passing 

 through a cork in the bottom 

 of a glass cylinder. Another 

 rubber tube, which terminates 

 m a metal or wooden nozzle, 

 is attached to the second tube 

 in the cork. The glass cylinder 

 is graduated into ^-ounce and 

 1 -ounce divisions. Close to 

 the bottom of the cylinder two 

 pinch controls are placed on 

 the rubber. By pinching the 

 control on the rubber tube 

 coming from the keg the 

 cylinder fills with the medi- 

 cine; by closing this control 

 and pinching the other, the 

 solution flows from the cylin- 

 der in any dose required. 

 The nozzle is held in the 

 ^ sheep's mouth by one man, 

 and the controls are operated 

 by another. 



By catching the sheep and bringing them to the administrator, Mr, 

 Hall found that he could dose 100 sheep in an hour. 



If the apparatus were erected close to or over the race of the 

 drafting yards, a greater number could be dosed, for it would only be 

 necessary to raise the head of each sheep slightly, insert the nozzle, and 

 deliver the dose. 



