COMBATING THE BLOW-FLY. 
Ee ee a, At 
- A similar flock of sheep in the same district was inspected at 
about the same time. These had all been carefully crutched prior 
to lambing, and were well looked after.. The numbers were 
about the same, viz., thirty thousand (30,000). These had 
to be repeatedly mustered and dressed, over 10 per cent. being 
attacked by ‘lies. 
If sheep-owners would only give this process of jetting one trial. 
instead of crutching, they would be satisfied that they will get a 
maximum of protection at a minimum of cost. 
In the Orion Downs method,-the arsenical dip at double the 
strength as recommended by the makers is jetted into rhe wool at 
the breach of the sheep. With the use of a strong power pump 
the operation is cheap and simple as compared with crutching. 
The sheep are not knocked about as in crutching, and the work is 
easier on the men. 
The proper method of jetting is to take an ordinary race, such 
as is used for branding.- At one end—the exit—it must be narrowed 
down to about 20 inches in width, so that a sheep cannot turn in it. 
This narrow race should be at least 9 feet long. At the end is a 
gate, which allows the sheep through one at a time. A man is 
placed at the gate to check too fast a run. About half-way up the 
narrow race, on the outside, a hole 3 feet by 3 feet and 3 feet deep is 
dug to allow a man to manipulate the hose, which operates with an 
“ Edgell cut-out.” He jets each sheep thoroughly as it passes him. 
The man at the exit gate prevents the sheep from going past too 
quickly. ‘Fhe other men pen and keep the sheep up. Six thousand 
(6,000) sheep per day have been done, and done well. 
The method can also be used in the paddocks by using hurdles 
and gratings which can be carried about on the run on light waggon, 
with the jetting plant tailed on behind. Lt is not necessary to try 
and save the surplus dip, as with careful use very little is wasted. 
The attached drawing gives a general idea of the race used. The 
expense works out at about one halfpenny (3d.) per head. 
Pilcher operator 
nia 
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PLAN OF RACE FOR JETTING SHEEP. CAPACITY, 6,000 SHEEP PER DAY. SIX MEN. 
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