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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 observed on body damages during the time of keeping them in colonies in transport plastic cages with the crevices in the upper wall of cage. Damages were evaluating twice, after three and ten days, in 912 bees kept in cages. There were inspected: 13824 legs, 4216 wings and 4608 antennas.
Changes of number of bee colonies and volume of honey production in the world since 1961 are presented in the paper. Changes and prospects for the world trade in honey are also discussed with special regard to the Polish position. The research was based on FAO data.
The population of the honey bee, Apis mellifera, continues to shrink. The middle-European bee, Apis m. mellifera, is particularly at risk in Europe. The drop in the number of middle-European bees is so huge that the insect is under the threat of extinction. Today, they live on small areas covered by the protection of genetic resources. Apis m. mellifera is protected mainly in areas where this species evolved: for instance, in Switzerland, Latvia, Norway, Sweden, Finland, Denmark, France, Germany, Poland or Russia. This paper presents methods used to preserve and protect Apis m. mellifera in Europe and research on the descent and original extent of the species. It also reviews opportunities created by the implementation of various types of programs for the protection of genetic resources of Apis m. mellifera and ways of employing morphological and genetic studies for the conservative breeding of middle-European bees. The paper demonstrates that the protection of Apis m. mellifera in Europe is necessary, considering the decreasing size, and the threat of hybridization, of this population. The use of the morphometric evaluation and DNA analysis methods have made it possible to track and compare likely directions of propagation of genes in the long history of evolution of bees. Moreover, these methods have given us better insight into the ongoing processes. The current use of these methods for reliable identification of bee breeds helps to protect Apis m. mellifera more effectively. European programs for the protection of genetic resources of bees are based on the following two main paradigms: the breeding of local isolated populations on islands and establishment of protected inland areas for the conservative breeding of contained swarms. All these programs share and are successful in achieving the goal that consists in the preservation of the characteristics of Apis m. mellifera as unchanged as possible, with retention of the maximum genetic diversity of the species.
The aim of the study was to evaluate the variability of morphological characteristics of native middleEuropean bees (Apis m. mellifera) of the ‘Northern M’ line. The research covered characteristics of breed (the length of proboscis, the cubital index), body size (the width of tergite 4 and the sum of widths of tergites 3 and 4) and wing size (length and width). The study compared bees harvested from a leading apiary and from collaborating apiaries participating in a program for the protection of genetic resources of bees of this line. The material for the study was harvested in 10 consecutive years. The samples were collected by the “cluster drawing” method (the multi-stage method of clustering described by Zee et al. in 2013). Each sample consisted of 25 to 30 bees. The frames were loaded in an instrument for the morphological measurement of bees (Apimeter). Seven measurements were taken on prepared body parts of each bee. The length and width of the wing and the length of the cubital vein were measured on the right front wing (hereinafter referred to as the “wing”). In addition, the width of abdominal tergites 3 and 4 and the length of proboscis were measured in each instance. In total, 4291 bees were harvested and 30 037 measurements were taken. The conclusion is that the program for the protection of genetic resources of bees of the ‘Northern M’ line can be implemented in Poland based on the leading apiary and on the collaborating apiaries, and bees of this line display characteristics of middleEuropean bees. Moreover, the study demonstrated a consistency of values of the studied characteristics of the ‘Northern M’ line with the applicable references of morphological characteristics for Apis m. mellifera. In addition, based on a review of results of the author’s research and based on collected literature originating from the 1960s, the study proves that a dwarfing trend has emerged among middle-European bees.
Zaprezentowano wyniki badań przeprowadzonych na grupie pszczelarzy biorących udział w kursie doskonalenia zawodowego prowadzonym przez pracowników Pracowni Hodowli Owadów Użytkowych SGGW. Przedstawiono strukturę wiekową pszczelarzy, a także strukturę pasiek w zależności od ich wielkości. Poddano także analizie produkcję miodu z pasieki i od rodziny pszczelej, a także uzyskiwane przez respondentów ceny miodu oraz sposoby jego zbytu.
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Polskie pszczelarstwo ma po załamaniu datującym się od lat 80-ych zeszłego wieku szanse na rozwój dzięki subsydiom z Unii Europejskiej. Jednakże typowe pasieki są zbyt małe, by dochód z nich zapewnił utrzymanie rodzinie pszczelarza. Pszczelarstwem zajmują się w większości osoby starsze, traktując to raczej jako hobby niż źródło dochodu, ale ostatnio średni wiek pszczelarzy się obniża.
The article treats about the bee keeping which is very important element of agriculture. Bee pollination of plants is the evidence of significant role the bees play in the environment. Bee colonies produce honey, propolis, bee wax and bee bred. In Poland, the bee keeping's situation has worsened since the middle of the eighties. The number of apiaries has decreased fourfold and the pace of growth in the number of bee's trunks has been three times slower in the end of the nineties. Furthermore, honey production fell from 14.1 thousand tons in 1991 to about 9 thousand tons in 2000. Poland’s share in world production of honey reached only 0,8 per cent in 1998.
In Poland, as in the whole world, there is a growing risk of extinction of the honeybee, especially the subspecies of the native middle-European bee. The main factors for the disappearance of native bee lines are environmental degradation, diseases and pathogens, as well as the introduction of imported queen bees of other breeds into domestic breeding. In this situation, it is particularly important to protect the genetic resources of native bees, which currently live in small areas covered by protection programs. The aim of this work is to review the possibilities offered by morphological and genetic examinations in the conservation breeding of native honey bee lines. It was found that the implementation of programs for the protection of native middle-European bees should be continued because of the growing risk of losing or diluting the valuable gene pool of native bees. Only the combination of phenotypic analysis and analysis based on DNA markers can effectively contribute to the protection of the native middle-European bee.
The study compares honey production in bee colonies with instrumentally inseminated and naturally mated queens. Poland has a special place in the world in terms of the numbers of instrumentally inseminated queens. Our country uses more of them than all other countries taken together. The dense distribution pattern of apiaries in Poland prevents any control over natural mating, while at the same time many bee-keepers who look for valuable breeding material decide to use instrumentally inseminated queens in their honey-making colonies. The cost of purchasing an instrumentally inseminated queen should be compensated by an increased productivity of the colony. The study was aimed at determining whether that was possible. The comparison was carried out at a large professional apiary in the season of 2008. Two comparison groups were created of 12 colonies each. Honey was harvested 3 times during the season. The average production of honey in the group with in-strumentally inseminated queens significantly exceeded average production in that with naturally mated queens.
Experiment was performed at Apiculture Division, Warsaw University of Life Sciences – SGGW in 2005/2006 season. The aim of this study was to analyze the quality of mason bee pupae (Osmia rufa L.) originating from annual and biennial slots. Obtained cocoons were classified. Cocoons were divided into groups of healthy cocoons, empty cocoons, broken and infected. It was also examined and identified the presence of parasites praying on the mason bee cocoons. Research shows that in twoyear old slots is more than 10 times less healthy cocoons and three times more damaged cocoons in comparison to the annual sockets. Species diversity of parasites in the biennial nests is wider than in the annuals. In annual material it was found only one parasite belonging to the species Cacoxenus indagator whereas biennial material contained species: Cacoxenus indagator, Giraudiella inclusa, Trichodes apiarius and Sapyga quiquepunctata. Research shows that the mason bee slots should be used once. Repeated use of slots increases the degree of infestation with parasites which reduces reproductive performance.
The research was performed at Apiculture Division of Warsaw University of Life Sciences – SGGW in 2004–2006. Main observations were carried in February and in March 2006. The aim of this study was to present the differences in mason bee (Osmia rufa L.) survival resulting from the nests usage. After opening all the tubes it was found that in annual nest quite healthy cocoons was 1618 (21%) and the loss of 6208 (79%). In the biennial nest profit was only 157 cocoons (2.5%) and the loss of up to 6075 cocoons (97.5%). Taking into account the number of healthy cocoons (profit) as well as representing a loss in both types of nests it can be noted that in the annual nest it could received more than 15 cocoons from the female. However, in the biennial nest, which can be expected more numerous population, it was achieved in one year only 11 cocoons from the female.
Inappropriate doses and quality of dietary nutrients cause problems in providing the protein and energy balance in a feed ration. Especially, energy value of the feed ration poses many problems to dairy cattle breeders and particularly in the perinatal period, which results in increased incidence of metabolic disorders. These disorders are today one of the most frequent causes of culling of dairy cows, as they underlie most of the disease entities. The aim of this experiment was, therefore, to verify the hypothesis that oleic acid (OA) can be used as a biomarker for early diagnosis of elevated blood levels of non-esterified fatty acids (NEFAs) and β-hydroxybutyric acid (BHBA) in the early stages of lactation in high-yielding Polish Holstein (PHF) cows. The highest blood levels of NEFAs and BHBA of 1.573 and 1.116 mmolL⁻¹, respectively, was associated with the highest content of OA in milk fat. High concentrations of both NEFAs and BHBA, indicating explicitly the occurrence of the metabolic disease in cows, occur when the content of OA in milk exceeds 24g 100g⁻¹ of fat. Oleic acid may be used as a biomarker for the early diagnosis of elevated blood levels of NEFAs and BHBA in the early stages of lactation in high-yielding PHF cows.
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