Valentina Cebotari

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Valentina Cebotari, I. Toderaş, A. Gulea, I. Buzu

    The aim of this work was comparative testing in bees' food of nutritional supplements enriched with biologically active substances and elaboration of efficient proceedings feeding bees during harvesting deficient in nature. As biologically active substances have been used, some coordination organic compounds containing rare trace elements in particular Mo. Testing was conducted in spring (April 1 to 21) in three batches bee families. Family from all the batches received energizing nutrient mixture every 2 days for 3 weeks. For families from batch II the nutrient supplement was enriched with bioactive patented "Apispir + Cr" obtained from cyanobacteria Spirulina platensis biomass, cultivated in the presence of coordinative organic compound Sulfate chromate of dodecahydrate potassium [KCr (SO4)2 12H2O], and for batch III - with bioactive supplement of the coordinative organic compound (PPh4)2 [Mo2O4 (EDTA)] 2.5H2O - [tetraoxoetilendiaminotetraacetat molybdenum (V)] bis-(tetraphenylphosphonium) di-hemihydrate named as "AA20Mo". Research has shown that biologically active substances of mentioned above coordination compounds, contributes significantly to the activation of family reproductive functions (queen prolificacy, amount of capped brood, family strength), fortification of the insects organism immunity (increased disease resistance and brood viability) and increase the overall productivity of bee colonies. Beneficial influence of coordinative organic compounds on vital functions of bees is explained not only by the action of rare trace elements, but also complex action of all biologically active substances of their complicated molecular structure with very close ties to their structural and stable, including ions complexes of ligands and metal ions valence radicals modified and enhanced properties of cell membranes penetrating living tissues of the organisms of the bee. It was found that feeding of bee families on deficiency harvesting period in nature nutritional supplements enriched with coordination organic compounds containing rare micronutrients raises the level of development of morph-productive characters of bee families. Using in bees feeding the energizing nutritional supplement enriched with organic compound containing the coordinating AA20Mo (with Mov) helps to increase: queen prolificacy and amount of capped brood with 10.5%, family strength with 11.9%, brood viability and disease resistance with 2.2-4.3%, the amount of accumulated bee bread in the nest with 21.8%, amount of increased wax combs with 39.3% and honey production accumulated in the nest with 20.0%.

Key words: feeding, the bees, nutritional supplements, rare microelements, Mo, Cr