Egg Industry - August 2008

Extent of fly specking on ceiling in high rise house after one
cycle.
Cleaned ceiling with light fly specking in high rise house after
one cycle.

over the experimental period, which extended from February 22 to April 7, 2008. The trial was terminated at this time due to the scheduled removal of all manure from the six houses on the site. The flock in the adjacent control house received a larvicide in feed to suppress fly breeding in manure but pyrethroid sprays and baits were not used.

140

120

House 1
House 2

Effi cacy

The efficacy of the respective fly control procedures was evaluated using “sticky ribbons” which were unrolled and walked around the interior perimeter of the house prior to the initiation of the trial and on 11 sampling days extending from February 22 through April 7. Fly counts for the two houses are shown in the attached diagram.

It is projected that the cost of a comprehensive balEnce program would amount to $10,000 to $12,000 annually in comparison to $50,000 for a 10-house complex using conventional insecticides. EI

balEnce vs STANDARD TREATMENT
Flies per fly strip

100

22- 25- 28- 2- 5- 8- 11- 14- 17- 20- 23- 26- 29- 1- 4- 7-

Feb Feb Feb Mar Mar Mar Mar Mar Mar Mar Mar Mar Mar Apr Apr Apr

Date

The pit in the test house (House 1) was treated with 2 x 10⁸Bassiana conida/10 ft² in each of 14 applications over the experimental period, which extended from February 22 to April 7, 2008. The trial was terminated at this time due to the scheduled removal of all manure from the six houses on the site. The flock in the adjacent control house (House 2 ) received a larvicide in feed to suppress fly breeding in manure but pyrethroid sprays and baits were not used.