Effect of Feeding Bacillus thuringiensis to Caged Layers for Fly Control

Autor: B. A. Tower, Edward C. Burns, B. H. Wilson
Rok vydání: 1961
Předmět:
Zdroj: Journal of Economic Entomology. 54:913-915
ISSN: 1938-291X
0022-0493
Popis: Commercially prepared spore powders containing 3 × 109, 25 × 109 and 47 × 109 spores of Bacillus thuringiensis Berliner per gram were fed in the ration of caged layers. There was considerable variation in fly ( Musca domestica L.) control obtained in the droppings when the different formulations were fed at the same spore levels. A reduction in feed consumption, body weight and egg production of caged layers was noted when the most effective material (Rohm & Haas) was fed in the ration at and above 53 × 106 spores per gram of feed.
Databáze: OpenAIRE