

CHAPTER XXX 



MANAGEMENT OF SHEEP (CONTINUED) EXTERNAL 

 PARASITES 



Dipping Sheep-Dipping Orders (Scotland), 1906 Ticks or Kades 

 Grass-TicksSheep Lice Black Flies Maggot Flies Scab-Mites 

 Life-History of Scab-Mites Dip Materials The Dipper Different 

 Forms and Sizes of Dippers Pouring Smearing Poisoning by 

 Mercury and Copper. 



DIPPING is practised in accordance with the custom of 

 the district at various times during each of the four 

 seasons, spring, summer, autumn, and winter, on a dry 

 day and when the wool is dry ; for example, immediately 

 after clipping, or, still better, a fortnight later, when the 

 wool has grown a little, to enable it to retain more of the 

 effective material of the dip, and when the skin is not so 

 liable to be scorched by the sun while wet. The lambs 

 should go through the tank at the same time, but it is neces- 

 sary to take precautions against the lambs losing their 

 mothers entirely, or becoming prematurely weaned from 

 other causes, and doing badly in consequence. To this end 

 ewes and lambs should be dipped in small lots hill sheep 

 (for example) in their various hefts. Ewes and tups should 

 either be dipped after tupping time or one clear month 

 before it, in order to prevent " firing " the penis of the rams. 

 By the Sheep- Dipping (Scotland) Orders of the Board of 

 Agriculture, dated loth February and 9th April 1906, it is 

 necessary twice during each year to thoroughly immerse 

 sheep within the area referred to, in a sheep-dip approved by 

 the Board, and made up in proportions authorised by it 

 \hefirst dipping to take place between 1st January and 3ist 

 August, and the second between ist September and I2th 

 November. The Sheep-Dipping (Scotland and North of 

 England) Order of i8th February 1907 widens the area of 



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