Department of Biology, Faculty of Veterinary Medicine, University of Belgrade, Bul. oslobodjenja 18, 11000 Belgrade, Serbia.
Higher Agricultural School of Vocational Studies in Šabac, Vojvode Putnika 56, 15000 Šabac, Serbia.
Prev Vet Med. 2021 May;190:105322. doi: 10.1016/j.prevetmed.2021.105322. Epub 2021 Mar 8.
It is common knowledge that nutritive stress resulting from decreased diversity and quality of food, pollution of food sources and beekeeping errors may lead to increased susceptibility of bees to pathogens and pesticides. The dearth of adequate food is frequently compensated with supplements. Thus, this research was aimed to study the effects of the plant-based supplement B + on colony strength (assessed according to open and sealed brood area, honey and pollen/bee bread reserves, and the number of adult bees). In addition, Nosema ceranae spores and viruses were quantified and the level of infestation with Varroa destructor assessed. The experiment was conducted in late summer and early spring. In colonies which were given B + in feed a significant increase (p < 0.05) in the parameters of colony strength were noticed in comparison to the control (colonies fed on sugar syrup). Moreover, it was proven that the bees from these colonies had significantly lower (p < 0.05) N. ceranae spore counts, and acute bee paralysis, deformed wing and sacbrood virus loads. Our results suggest that the addition of B + supplement to the colonies provide them with nutrients, contribute to their strengthening, might prevent nutritive stress and increase the success of bees in combating pathogens.
众所周知，食物多样性和质量下降、食物源污染以及养蜂错误导致的营养压力，可能会使蜜蜂更容易受到病原体和杀虫剂的侵害。缺乏充足的食物通常会通过补充剂来弥补。因此，本研究旨在研究植物性补充剂 B+对蜂群强度（根据开放和密封的幼虫区、蜂蜜和花粉/蜂粮储备以及成年蜜蜂数量来评估）的影响。此外，还定量了美洲幼虫腐臭病孢子和病毒，并评估了瓦螨的感染水平。该实验在夏末和早春进行。与对照组（喂糖水的蜂群）相比，给予 B+饲料的蜂群的蜂群强度参数显著增加（p<0.05）。此外，事实证明，这些蜂群中的蜜蜂的美洲幼虫腐臭病孢子计数、急性蜜蜂麻痹病、变形翅膀和囊状幼虫病病毒负荷显著降低（p<0.05）。我们的结果表明，向蜂群中添加 B+补充剂可为其提供营养，有助于增强其体质，可能预防营养压力并提高蜜蜂对抗病原体的成功率。
