162 



Table 36. Mortality of immature house flies in the manure of laying 

 hens collected when CGA 72662 was added to the drinking 

 water at the rates of 10 and 20 ppm. 



20 ppm 10 ppm Control 



2/15 

 1/15 

 3/20 

 1/15 

 1/15 





15/15 



14/15 





15/15 



13/15 





15/15 



1^/15 





15/15 



14/15 





15/15 



14/15 



Total Mortal i ty 



75/75 



69/75 



Mean Mortal i ty 



15.00 



13-80 



% Mortal i ty 



100.00 



92.00 



Corrected % Mortality 



100.00 



91 .11 



8/80 

 1.60 b 

 10.00 



Corrected using Abbott's formula: 

 % treatment mortality - % check mortality „ 1 _ _ 

 100 - % check mortal i ty 



Significantly lower than other two treatments at p < 0.053$. 



