Correction of hygienic activity of bees
Journal Title: Біологія тварин - Year 2015, Vol 17, Issue 2
Abstract
The hygienic cleaning of honeybees is a genetic defensive reaction which inhibits the spread of infections on an apiary. The level of its activity determines the protective abilities of bee colonies and can be adjusted by the application of the adequate in composition stimulants used in the bee colonies in a special way. It has been found out that the application of PDE (Placenta Denatured Emulsified) by the “modified method” (by feeding and aerosol spraying) activates the development of bee colonies and their sanitary and hygienic activity to a greater extent than by simple feeding. The first experimental group was given PDE by feeding; the second group was given PDE by feeding and aerosol spraying in a dose of 1 ml per 100 ml of 50 % syrup in the amount of 100 ml per beeway; the first control group was given sugar syrup without PDE by the “modified method”; the second control group was kept without any stimulation. The changes of hygienic cleaning of honey bees in Varroatosis and infections honeybee brood were evaluated after stimulation. The level of hygienic cleaning in bee colonies was evaluated by the “perforation test” 24 hours after the application of PDE by different methods and without any stimulation. The degrees of hygienic cleaning in the bee colonies were the following: 95.3 % in the group where PDE was applied by the “modified method”; 94.7 % in the group where PDE was applied by the feeding; 90.3 % in the group which was given syrup without PDE, and 79.7 % in the group without any stimulation. The increase of the level of hygienic cleaning in bee colonies after the application of PDE by the “modified method” improved their ability to resist infectious diseases of the honeybee brood.
Authors and Affiliations
O. S. Kysterna
Keywords
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