الفهرس 
INTRODUCTIONOnly 14 pages are availabe for public view
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Abstract
Studies were carried out in Assiut governorate, during the active season of
(2018 – 2021). the experiments that benefit the study have done through laboratory
tests and applied them in the field. Firstly, preparing inoculum for fermentation and
diets preparation (un fermented & fermented); then the nutritional analysis of the diets
and the preference and palatability by honeybee Apis mellifera was tested. The
laboratory studies were done in Insect Research Laboratory, Plant Protection Research
Institute on many aspects of differently aged honeybee workers (3, 6, 9, 12, 15 and 18-
days-old) of the first hybrid of Carniolan honeybee, Apis mellifera carnica workers in
October 2019. The field studies were applied in the apiary on many colonies during the
dearth season of (November2020-March2021). This study indicated the importance of
improving the quality of the pollen substitute diet, through fermentation process to
protect and save health of honeybee colonies