Methoprene as a poultry feed additive for house fly control

Methoprene was evaluated in commercial caged-layer houses as a poultry feed additive at 7.5 ppm (AI in feed) in the 1974 fly season and at 10 ppm (AI in feed) in the 1975 fly season. In both seasons, the methoprene treatment caused an inhibition of house fly emergence. However, the average percentage of inhibition did not exceed 53 percent in 1974 or 40 percent in 1975. Both levels of inhibition were too low to result in acceptable control of the resulting adult populations of house flies. Also, the level of inhibition gradually decreased throughout the latter part of both seasons until the methoprene treatment had little if any significant inhibition of house fly emergence. In both seasons, it was concluded that the primary causes of these problems were an existing cross-resistance to methoprene in the field strains followed by an induction in resistance resulting from the continuous exposure to methoprene.

Name thesis:degree_name

Ph. D.

Level thesis:degree_level

doctoral

Discipline thesis:degree_discipline

Entomology

Department dc:contributor.department

Entomology

Grantor dc:publisher

Virginia Polytechnic Institute and State University

Year dc:date.issued

1976

Author dc:creator

• Breeden, Gary Clinton

Statement dc:rights

• In Copyright

Licence dc:rights.uri

• http://rightsstatements.org/vocab/InC/1.0/

Language dc:language.iso

en

Handle dc:identifier.uri

http://hdl.handle.net/10919/114628

OAI identifier oai:identifier

oai:vtechworks.lib.vt.edu:10919/114628