title: Administration of Brevibacillus laterosporus spores as a poultry feed additive to inhibit house fly development in feces: a new eco-sustainable concept.
abstract: The success of a microbial pesticide application against house flies developing in manure should accomplish the uniform mixing of active ingredients with this breeding medium, thus enhancing residual effects. The oral administration of the entomopathogenic bacterium Brevibacillus laterosporus to caged poultry species allows the homogeneous incorporation of its active ingredients with fly breeding media. Feces from treated broilers or hens show toxicity against exposed fly adults and larvae. Insecticidal effects are concentration-dependent with a lethal median concentration (LC50) value of 1.34 × 10(8) and 0.61 × 10(8) spores/g of feces for adults and larvae, respectively. Manure toxicity against flies was maintained as long as chickens were fed a diet containing adequate concentrations of B. laterosporus spores. Toxicity significantly decreased after spore administration to birds was interrupted. When poultry diet contained 10(10) spores/g, mortality of flies reared on feces exceeded 80%. The use of B. lateroporus spores as a feed additive in poultry production systems fostering a more integrated approach to farming is discussed.
authors.affiliation: Dipartimento di Agraria, University of Sassari, via E. De Nicola, 07100 Sassari, Italy.
authors.forename: L
authors.initials: L
authors.lastname: Ruiu
authors.forename: A
authors.initials: A
authors.lastname: Satta
authors.forename: I
authors.initials: I
authors.lastname: Floris
mesh_terms: D000284:Administration, Oral; D000821:Animal Feed / Q000382:microbiology*; D000822:Animal Husbandry; D000818:Animals; D058675:Brevibacillus / Q000737:chemistry; D002645:Chickens; D004032:Diet / Q000662:veterinary; D019587:Dietary Supplements / Q000382:microbiology; D005243:Feces / Q000737:chemistry; D005260:Female; D006793:Houseflies; D007814:Larva; D008372:Manure / Q000382:microbiology; D010572:Pest Control, Biological; D013170:Spores / Q000737:chemistry
chemical_list: D008372:Manure
keywords: Brevibacillus laterosporus; Musca domestica; feed additive; house fly; poultry