Effect of Feeding Bacillus thuringiensis to Caged Layers for Fly Control
Autor: | B. A. Tower, Edward C. Burns, B. H. Wilson |
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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 |
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