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Bees, bee bread and honey from 11 apiaries from Warmia and Mazury region were examined. In apiaries from Olsztyn the average concentration of HCH in bees was 0.0220 ng/g of lipid matter (l.m.), while from the apiaries situated on the fields of the former State Farms and individual farmers was more than twice and from Piska Forest 1.4 time higher than in Olsztyn. In bee bread from Olsztyn apiaries...
Injuries of honey bee workers and drones caged in native and foreign colonies. In June and July 2008 worker bees and drones were kept in plastic transport cages in native and foreign colonies. 4,224 honey bees were used in the investigation (1.920 workers and 2,304 drones). After 3 and 7 days of storage the bees' injuries were checked with a stereoscopic microscope. The results were used to determine...
The object of the study was the assessment of the usefulness of laboratory cage tests in the estimation of honey yield and the parameters characterising the springtime colony development and the colony strength. Each experiment comprised 10 colonies representing three groups of honeybees: pure-bred Buckfast (Bcf), Caucasian queen x Carniolan drone hybrids (Cau x Car) and Norwegian queen x Caucasian...
The experiment was run in a stationary apiary, at Otrę-busy, Pruszków region in the spring of 2005. The trial involved nineteen honeybee colonies divided into two groups: group I - 10 honeybee colonies were fed candy mix made of pollen and honey; group II - 10 colonies fed honey-and-sugar candy. The development of colonies was assessed based on brood area measurements. The experiments furnished evidence...
The aim of work was to investigate influence amounts of brood on production of honey at four the bees' races used in Finland. It was compared also wintering and spring development during three years. There was not found the influence of races on winter fall and nosema paralysis. The winter food consumption was dependent on race: Central European race - 1.04 kg, Carniolan race - 1.06 kg, Italian -...
Comparison of two methods of monitoring honeybee infestation with Varroa destructor mite. Investigations were carried out at the Apicultural Division of Warmia and Mazury University in Olsztyn (Poland) in 2009. The aim of this study was to compare the accuracy of the two different methods of diagnosing the level of infestation with Varroa destructor in bee colonies. Sixteen bee colonies were randomly...
The investigation was conducted in the apiary of Bee Division of Warsaw Agricultural University in 2003-2004. The aim of this experiment was to study the influence of the temperatures on survival and changes of body weight of drones and quality of their semen. The quality of semen was evaluated organolepticaly by comparison of semen characteristic of the drones from control group and the experimental...
The use of RAPD-PCR analysis in genetic diversity estimation in Apis mellifera honeybee. The study was designed to determine the utilty of fi ve RAPD-PCR arbitrary primers 539, 514, 694, 691and 652 in estimation of genetic diversity in ree honeybee breeds: A. m. caucasica, A. m. carnica and Buckfast. Arbitrary primer 514 proved most useful, since it generated the biggest number of RAPD-PCR products...
In the spring of 2009, 82 winter hive debris samples were collected from 17 bee yards in a commercial apiary. The weight of winter hive debris ranged from 57.1 g to 122.8 g, and it comprised from 610 to 1298 bees with average individual weight of 82.3-91.5 mg. Wax debris had a varied share of the total weight of hive debris. The lowest weight of wax debris was observed in colonies infested with both...
The mason bee, which belongs to the Megachilidae family is one of the wild-living bees which has been used for many years to pollinate early-spring orchard cultivations and isolated seed plantations. The aim of this study was to determine the number of females which a single mason bee male is capable to inseminate in laboratory conditions. The experimental material comprised males (30 individuals)...
The investigations were performed at Bee Division, Faculty of Animal Science, Agricultural University of Warsaw, during the summer 2007. The aim of the study was to evaluate degree of damages and damages intensities bee workers kept on the bee's own colonies without queen. Those studies can explain causes of queen damage kept in the queens banks. In the investigation were used 912 bees, which were...
During the mating flight, a queen copulates with several, sometimes more than ten, drones. It is known that a queen preserves semen from all the drones with which she had copulated. However, it is not clear if the particular drone position in the mating sequences influences the number of this male's progeny. Investigations were performed in the apiary of Apiculture Department of Warmia and Mazury...
Quality of bee queens depends primarily on the age of the brood used to queen rearing. The best queens are obtaining by rearing from the eggs. The aim of the study was to investigate whether the unsealed brood presence in the rearing colonies affects eggs acceptance. To colonies rearing with the unsealed brood there were introduced eggs at the age of 0-18 hours, 24—12 hours and 48-66 hours. After...
The survivability and behaviour of worker bees of the Middle European, Carnolian and Caucasian breed at low air temperature was examined. Worker bees were individually placed in plastic cages and exposed to low temperatures - 5, 7 and 9°C - in a cooling incubator for a period of 60 and 120 min. After the fixed time elapsed, the number of moving worker bees as well as of chill-coma ones was recorded...
The influence of the inter-breed interactions between the bees of the Caucasian (CAU), Carnelian (CAR) and Buckfast (BC) genotypes on the results of their hoarding activity was studied. For the experiments three environments with the artificial nectar flow were created. The intensity of bee competition was different in each environment. The CAU were poor competitors, i.e. they were efficient only...
Effect of milk diet on the selected indicators of immunity of rats. The studies were conduced on 2 groups of the rats (10 animals in each group). Group I received milk diet and group II - synthetic one. The aim of the studies was to state whether the milk diet, and more strictly, biologically active components of milk affected the indicators of resistance of the rats, being the model animals for man...
Influence of nanoparlicles of silver/palladium alloy on chicken embryos' development. The objective of this study was to examine potential effects of silver/palladium alloy nanoparticles' hydrosols on growth and development of chicken embryo. Fertilized eggs (n = 75) were divided into 5 groups and injected in ovo; group 1 (control) - no treated; group II (placebo-1) physiological saline with 1 injection;...
The investigation of bee virus infections in Poland. In 1995–1996 adult dead bee samples were collected from April to September from apparently healthy colonies in nine apiaries located in different parts of Poland. The samples were tested by agar gel immunodiffusion (AGID) for black queen cell virus (BQCV), acute bee paralysis virus (ABPV), chronic bee paralysis virus (CBPV) and sacbrood virus (SBV),...
Wheat distilled dried grains with solubles (DDGS) as a replacer of extraction soil meal in nutrition of broiler. The experiment was carried out on 540 broiler chickens of Cobb 500, which were at random allocated to three nutritional groups: K, Di, D2. The content of wheat distilled dried grains with soluble (DDGS) in starter feed was the differentiating factor for the groups. Any negative effect on...
Chemical composition and physico-chemical properties of meat ofAyam cemani hens and cocks. The experimental material consisted of 30 slowly growing Ayam cemani chickens (15 males and 15 females), reared since hatching until the 18 week of life. The birds were fed the standard full-ration diets for broilers: starter - 22.1% of protein and 12.8 MJ ME, grower - 21% of protein and 13.2 MJ ME, and finisher...
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