Versuche zur Wirkung von Calciferolködern gegen Ratten und Mäuse in Ägypten

Experiments with 0.1% Calciferolbait (product of DETIA FREYBERG GMBH, Fed. Rep. of Germany) for combatting rats and mice were conducted in the laboratory, stores, and in the fields in Egypt. Efficacy of Calciferolbait on sunflower seeds as well as on wheat-kernels was tested in laboratory experiments against various rodent species spreaded all over the country. In general it was observed, that the quantity consumed by the test animals was higher for maize alone without toxicant than that for Calciferolbait. Results obtained by practical use of Calciferolbait on sun-flower seeds as well as on wheat in the stores and the field revealed that both baits were effective against rats and mice; but the attractivity of sunflowerbait was in general slightly higher than that of wheatbait. In other trials the efficacy of a further Calciferol-freshbait plus 3% sunflower oil as well as of a Calciferol-freshbait without addition of sunflower oil was examined. Results showed that both Calciferolbaits were effective, but the attractivity of the bait with addition of 3% sunflower oil was better than that of the bait without sunflower oil.