COCCIDIOSIS: PREVENTION 137 



flies, moles, etc., so that the infection can be spread 

 over a much wider area than was formerly the 

 case. 



When birds are living under partially or entirely 

 domesticated conditions, great care should be taken 

 to burn all droppings and to ensure an adequate 

 supply of uncontaminated food and drink. No 

 excess of food should be permitted. It is not only 

 wasteful, but increases the chances of infection. 

 Purity of the food-supply can be ensured in part by 

 using movable boards on which the food can be 

 placed. The boards can then be removed and 

 thoroughly cleansed, while the pens should be so 

 constructed that daily cleaning is possible and easy. 

 Lime-washing of all coops, etc., once a week is 

 useful. 



Wherever possible, healthy birds should be taken 

 off infected areas, and the fowl-houses placed in 

 some position as remote as possible from the former 

 ones. The fouled surface soil should then be 

 removed and burned, or thickly treated with quick- 

 lime, which, after about a week, should be well dug 

 into the soil. 



It is useless to remove heavily infected stock to 

 fresh places. The very act of removal may spread 

 trouble by infecting new soil if the birds are driven, 

 or by polluting crates and vehicles if they are con- 

 veyed, while they almost at once create as bad an 

 environment as they have left. It is far better to 

 destroy such birds and to recommence with new 

 stock on clean ground. 



When birds are reared in large numbers, it is a 



