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  • The Effect of Plant Density on the Yield of Sunflower Hybrids in 2000-2002
    96-99
    Views:
    124

    In order to ensure modern Hungarian sunflower production, the development of hybrid-specific techniques are highly important. The continual expansion in hybrid choice makes the examination of genotypes necessary in the relation of genotype and environment interactions and critical factors. The Plant density as a complex determinant factor has a strong effect on sunflower yield, quality and plant hygiene. As a result of the experiments, we can state that the optimal density was 45.000-65.000 plant/hectar. In 2001-2002, the optimal density was 45.000-55.000 plant/hectar; while in 2000, it was 65.000 plant/hectar.

  • Examinations connected with productive life in Hungarian Holstein Friesian populations
    32-39
    Views:
    93

    In Hungary, an intensive dairy population has developed in the last few decades as the result of upgrading to Holstein-Friesian. Intensive milk production, adjusted with housing and feeding, unfavorably affected secondary traits. The number of days between two calvings has increased remarkably and productive lifetime has decreased drastically. In the interest of profitable milk production, it is important that cows should be able to stay in the herd as long as possible, in order to have great lifetime productivity.
    The aim of this paper was to compare the production and pedigree of cows with eight or more lactations to cows which were culled after their first lactation.
    It can be stated that cows with longer herd lives produced more milk in their first lactation than those which were culled after their first lactation. When analyzing the pedigree effect of sires, this could not be proven, although some bulls, mainly of Hungarian origin, appeared at a higher frequency. In the analysis of the effect of dams, it was found that many of the offspring of the cows with longer herd lives had similarly great lifetime productivity. Correlation between herdlife and milk production quantity traits was found to be mild or stronger (r>0,60), while according to our analysis, there is no correlation between herdlife and milk production quality traits.

  • Inland and foreign Erwinia amylovora isolates by carbohydrate utilization
    29-33
    Views:
    76

    Fire blight, a plant disease caused by the bacterium Erwinia amylovora, produces serious losses in apple and pear orchards all over the world. Since the appearance of fire blight in Hungary (Hevesi, 1996) Erwinia amylovora isolates were collected in different years, from different hosts and areas in order to establish gene bank for future epidemiological studies. We had isolates from foreign countries as well. The aim of our research was to compare all of the Hungarian and foreign isolates by carbohydrate utilization. 
    In our experiments effect of carbohydrates on E. amylovora multiplication was determined using API 50 CH strip (bioMérieux, France). By the API 50 CH strip method we checked a number of unstudied carbohydrates. The results of the tests shows colour changes. Based on utilization of 49 carbohydrates of API 50 CH kit by E. amylovora isolates, two groups of carbohydrates can be defined: “Utilized” - and “Not utilized”  carbohydrates. All isolates utilized 20 different carbohydrates after 164 hour incubation. Conversely, isolates also could be divided into four groups (1, 2, 3, 4) by arbutin and raffinose utilization. In group 1.-isolates utilize arbutin; 2.- utilize raffinose; 3.- utilize both arbutin and raffinose; 4. -utilize neither arbutin nor raffinose. Presumably carbohydrate content of nectar could play an important role on invasion of the (E. amylovora) bacterium via flower.
    It could be concluded that the carbohydrate utilization – completed with genetic analysis – can be used for characterization of Erwinia amylovora isolates.

  • Regional strategies serving competitiveness
    97-101
    Views:
    116

    In my study titled “Regional strategies serving competitiveness”, I examine the regional strategies whose development and implementation in practice play a determinant role in the medium- and long run economic and social development of the given region. The study primarily focuses on the infrastructural basic investments that are essential from the aspect of creating a knowledge-based information society. The study also deals with a stakeholder analysis used by investors in order to focus on the quality of state administration and institution system.

  • Variability examination of photosynthetic pigment content and specific leaf area in individual maize (Zea mays L.) plants
    153-157
    Views:
    210

    Currently, maize is one of the most important crops (Zea mays L.) both globally and in Hungary. We compared physiological parameters of a maize genotype – p9903 – at two different experimental sites in a field experiment. Furthermore, we examined these parameters’ variability in individual plants on the leaves with different ages. Absolute chlorophyll content of the leaves were analysed, separately that of chlorophyll a and chlorophyll b. We also measured the absolute carotenoid contents of leaves. Furthermore, we calculated these photosynthetic pigments’ content ratio. Specific leaf area (SLA) and dry matter weight were also measured in order to characterise plant production. The results obviously reflect the decreasing in the efficiency of photosynthetic apparatus on the low yield site. Otherwise, we identify significant differences only in certain cases of leaves.

  • The role of Local wine administration bodies in creating social and cultural capital and in the preservation of local identity
    181-191
    Views:
    73

    the target for the European Union to make Europe the most competitive and dynamic knowledge-based economy in the world. In this process, the education and training are of great importance for the member states. The restructuring of higher education, the modernization of the universities cannot be achieved without new financial resources. They should be ensured by increasing contribution of the private sector. However it is not enough to invest sufficient funds in the educational and training system, they must be expended efficiently. The free higher education itself does
    not necessarily guarantee the equal access and maximal participation. The quality of higher education and equal opportunity can be improved, if the rising funds are expended on infrastructure development and creating an efficiently working student support system.
    Quality, equal opportunity, efficiency – they are the most important views for the decision-makers in the higher education reform. In my paper, I would like to interpret definitions relating to higher education and in this way I attempt to evaluate the financing systems of the Hungarian higher education formed since the change of the regime, with special regards to the normative financial system combined with the payment of tuition fees. For classification, it is necessary to present the different basic financial models. Furthermore, on the basis of the above criteria, I try to make recommendations on how to improve the present financial model in order to achieve the Lisbon objectives.
    The topic is important in our days, because tuition fees will be introduced in Hungary from 2008. The problem is very complex, although the analysts in most cases tend to approach the topic with prejudice, depending on their financial and political interests. My analysis may contribute to discernment in the tangle of the pros and cons. 

  • Preliminary studies on in vitro sensitivity of Venturia inaequalis populations to some fungicide active ingredients
    165-168
    Views:
    105

    Aim of this study was to investigate the sensitivity of conidia of Spilocaea pomi to main fungicide active ingredients (cyprodinil, pirimethanil, fluquinconazole, tebuconazole, difenoconazole, dodine és trifloxistrobin) at dosages of 0.5, 1 and 2 times incubated in vitro at 24 and 48 hours collected from three integrated apple orchards. Results showed that degree of conidial germinations at the fungicide treatnemts decreased in the order of dosages of untreated, 0.5, 1 and 2 times. Considerable conidial germination was observed at higher dosages of some fungicides (e.g. groups of strobilurines and EBI) which confirmed the possibilities of sensitivity reduction of Spilocaea pomi to some funigicides in the sampled Hungarian apple orchards.

  • Need for measurement of the innovation at Hungarian SMEs
    5-13
    Views:
    136

    Competitiveness studies have shown that innovation could be breakout point for some economies, regions and enterprises. Knowledge acquisition, creation and exploitation of the knowledge base have been an essential element for economic growth. These knowledge-based economic processes come together with the innovation. Measurement of innovation by indicators has been playing a really emphatic role in making strategy whether it is national or EU planning.

    Enterprises have always tried to measure and quantify their innovation activities mostly through the results of their economic process. Companies have generally considered their products as part of the innovation. That was the reason that in most cases they only and exclusively focused on the finished product. Some of them was able to realize that details of the production process must be taken into account in order to the whole innovation activity could be measured.

    That is why I find it important to examine of what the innovativity of enterprises is made of, and in which way they can be measured.
    In addition I was looking for the answer to the questions that how much the measuring method allows you to compare enterprises for further examination.

    The development of measurement methods is an essential moment of the article. As it is compiled for me the most important aspect of innovation, according to the statistical document, the Oslo manual guides you through the measurement methods and operational processes They play a very important role in proving my hypothesis. Overall, our country’s innovation results show those areas where we have high endowments, and also those where are the weaknesses.

    Of course, systems and tools defined by the governing authorities of national economies will have the main role but the activity of the European Union will be the frame in the end, because without subsidies from the EU budget, national budget wouldn’t be enough to implement these aims.

  • Does the Hooded Crow (Corvus cornix) harbour vancomycin-resistant enterococci in Hungary?
    5-8
    Views:
    240

    Vancomycin resistant enterococci (VRE) are high priority nosocomial bacteria with a potential for zoonotic transmission. Thus, its emergence outside health establishments is a major concern. In order to study the prevalence of VRE in wildlife, we collected 221 faecal samples from free-ranging Hooded Crow (Corvus cornix) from urban and rural habitats in Hungary, from March to August 2020. The screening for resistant enterococci was done using bile esculin azide (BEA) agar supplemented with Vancomycin, specific to the screening of VRE. None of the samples from either habitat types yielded VRE. It seems that Hooded Crows from Hungary do not necessarily constitute a reservoir of VREs at present. Nonetheless, a continuous surveillance of VRE in wildlife would be judicious.

  • Tourism-Based Analysis and Development Potentials in Hortobágy
    272-278
    Views:
    98

    Tourism – especially ecotourism and health-tourism – could be one of the sectors which could make Hungary economically competitive after joining the European Union, by ensuring thousands of people employment possibilities, if they take advantage of local and regional opportunities. For this reason, it would be necessary to analyse the two types of tourism mentioned above, as well as to collect data and especially impressions concerning how these potentially lucrative sectors could best be structured and managed, as well as to predict their probable effects.
    The most important objectives of my study are to introduce the values of Hortobágy, to analyse the present status of tourism in the Hortobágy National Park, and to make suggestions for increasing the numbers of tourists, by making Hortobágy more attractive.
    As a resident of Debrecen, I visited the region several times and took part in programs at Hortobágy as well. I was always curious how the trip to the Hortobágy could be made more enjoyable.
    My research was carried out with the help of questionnaires, which were made in three languages – Hungarian, English and German –. In August 2002, I approached foreign and Hungarian tourists in Hortobágy village, and asked them to fill them in. To evaluate the questionnaires, I used Microsoft Excel ’00. During the evaluation, I calculated distribution, arithmetic mean and deviation. Moreover, I obtained the level of significance.
    My assumption that tourists visiting Hortobágy are “one-day” tourists, who are visiting the Hungarian Pusta because of an actual program, was supported by my research. I must emphasise that mostly passive tourism opportunities are offered in Hortobágy, where tourist are only external observers of the programs.
    In order to change this situation, I suggested that visitors to Hortobágy can be encouraged to stay longer by offering them various programs, in which tourists are actively involved. My program recommendations include a craftsman’s house or tent, where the visitors can try to make typical folk instruments. Moreover, I made suggestions as to how to teach tourists to make Hungarian dishes. I also outlined several one-day program possibilities. Among the opportunities, I also mentioned the need to provide tourists possibilities to spend several days in a conventional Pusta life-style. To realise these things adequate infrastructure and information system should be developed.

  • The Aalborg process and its Hungarian connections
    5-14
    Views:
    78

    The four European Conferences on Sustainable Cities and Towns gave birth to documents that are important from the point of view of local sustainability. These are, in chronological order, the Aalborg Charter – 1994 Aalborg, the Lisbon Action Plan – 1996 Lisbon, the Hannover Call – 2000 Hannover, and the Aalborg Commitments – 2004 Aalborg. Throughout the process, the emphasis gradually moved from planning to the implementation of plans.
    Today, there are more than 2000 signatories of the Aalborg
    1A tanulmány az OTKA T-046704 sz. pályázatának támogatásával készült.
    Charter. The cutting edge of the process are Italy and Spain, the municipalities of these two countries add up to 80 per cent of all signatories. In both countries, the national commitment is given, but there is not a body that could coordinate the activities related to sustainability, so local governments play the major role in it. The constitutions of these two countries also pass on some duties that are relevant from the point of view of sustainability within the competence of local governments, and allow resources to implement them. In the case of the United Kingdom, the commitment of the national government, and especially the Prime Minister, is the major factor in the movement towards local sustainability.
    The former socialist countries in Europe, as well as Hungary are relatively underdeveloped economically, so the social and environmental pillars of sustainable development are pushed into the background behind the economical pillar. As a result of the lack of national commitment, there is no guidance and there are no case studies available, so only a small part of local governments are informed of this important international movement, and so are committed to it. The lack of resources is also a problem. The consequence of all this is that there are 35 municipalities from the Eastern European countries that joined the EU in 2004, and only four from Hungary – to mention by name Aba, Kecskemét, Monor and Nagykanizsa – that signed the Aalborg Charter.

  • Characterisation of a thermotolerant yeast, Kluyveromyces marxianus CBS712
    7-13
    Views:
    101

    Fermentation at high temperature with application of thermotolerant microorganisms is a technological advantage in bioethanol production. Among the yeasts, K. marxianus has outstanding thermotolarance. The industrial application of the IMB3 strain occurs usually at 45C. The final aim of our project is the genetic modification of the K. marxianus CBS712 strain in order to achieve ethanol production at higher temperature than the currently applied. This requires the characterization of the CBS712 strain, with special attention to the determination of the temperature limit of its growth and the amount of the ethanol produced. The temperature limit of growth was 48C in YPD medium. Elevation of the temperature above 45C led to an exponential drop of the cell viability. Ethanol production was tested in shaking flasks, in MYFM medium, under oxigene limited conditions, applying variable concentrations of glucose (12–20%) and different temperatures (45–47 ºC). Preliminary results have revealed that the elevation of glucose concentration increased the amount of ethanol produced. The amount of ethanol (appr. 5%)+ produced at the highest glucose concentration was not different at the tested temperatures (45, 46 and 47 ºC). The observation indicates the potential in raising the thermotolerance of the strain. 

  • Estimation of the vine-shoot yield in the Gyöngyös district
    21-26
    Views:
    114

    Every year, a significant amount of vineyard prunings is generated in Hungary. Instead of utilization them, it is burned directly on the field in spite of the limitations of legalization highly pollute the environment in recent decades. The vineyard pruning itself or with other by-products from pomology and forestry can be significant amount of fuel source. However, before the planning to utilization the essential task is to estimate the potential. This study examine that how many vineyard is generated in the micro-region of Gyöngyös in every year on appointed vineyard.

    In order to vine-branch potential calculate more accurate data was necessary so the products had to be determined for all plant. Thus, the biomass resource and the utilization become plannable. As the result of the experiment we can estimate that 1,5 t/ha vineyard pruning are generated. It means more than 9 thousand tons pruning in the micro-region of Gyöngyös. This amount can be convert into fuel source more than 150 thousand GJ heating value.

    The results evince that the vineyard pruning is important fuel source in every year in the micro-region of Gyöngyös. Further usage is suggested for other regions in other size.

  • Leaf protein analyses in order to utilise the leaf shoot of artichoke
    43-47
    Views:
    140

    The constat growth of the Earth’s population brings with itself a higher demand for food and protein not only in human nutrition but also for the feeding of livestock. Currently, the feed industry is mainly built onseed-based protein, wherethebaseplant is soybean, which is large lycovered by imports in Hungary, similar toother European countries. However, the long-term economically sustainable lifestock breeding demandschanges which has also worked out strategies. An alternative protein sources could be green leafy plants.

    In current work the Jerusalem artichokes as an alternative source of protein was studied, compared to alfalfa as a valuable protein plant. Our results indicate that fiber fraction ofJerusalem artichoke shootswas 34 to 37% after pressing in the autumn period while alfalfa slightly lower values were obtained (30%). On the other hand extracted green leaf protein concentration was higher in alfalfa than in Jerusalem artichoke. Along with this higher protein content could be measured from the leaf protein concentration of alfalfa and almost each amino acids were more, as well comparing to Jerusalem artichoke.

    Overall, the alfalfa proved to be advantageous as expected both in leaf protein extraction efficiency, both regarding the content of the protein in the Jerusalem artichoke. However, considering aminoacid composition and green biomass production, Jerusalem artichokecould be a promisingplant species asplant protein sourceinthefuture.

  • Measuring of nitrogen leaching using ceramic suction cups at different locations
    10-17
    Views:
    75

    Ceramic suction cups were used for the measurement of N-concentration in soil solutions under different soil and climate conditions in both field experiments of Rostock University and Agricultural University of Debrecen (Hungary). Depending on the soil utilisation the change in the N concentration of the soil solution can be proved on both sites.
    The experimental field of Rostock University can be characterised by its high groundwater table. The nitrogen concentration of soil solutions in the different soil layers were determined by the trend downward of water. In the dactylis (Dactilis glomerata) experiment, the quadruple treatments involved the following: with and without N-fertiliser, with and without harvesting, respectively. In the lower soil layers, the least rising N concentrations were established in case of the treatment without N-fertiliser combined with harvesting. The nitrogen leaching calculated from the infiltrated water quantity and the nitrate N concentration increased in the following order: without N-fertiliser, with harvesting < without N-fertiliser, without harvesting < with N-fertiliser, with harvesting << with N-fertiliser, without harvesting.
    The field experiment site of Debrecen can be characterised by a low groundwater table. The effect of N-fertilisation on the nitrate-N concentration of soil solution in the soil layers can be stated unanimously. Permanent nitrate-N leaching cannot be established due to the water upward movement under semiarid climate conditions. Intermittently transfer of nitrate-N between the soil layers is probable in cases of remarkable precipitation.

  • Study of the Hejő brook watershed fish fauna
    113-117
    Views:
    81

    Literature sources mention 18 fish species from the Hejő watershed. In order to learn more about the fauna, we studied the brook and its tributaries between 2003–2005. We detected a total of 32 fishspecies, 17 of which are new for the watershed. Most of these are native species (Rutilus rutilus, Leuciscus leuciscus, Leuciscus idus, Aspius aspius, Leucaspius delineatus, Gobio albipinnatus, Abramis bjoerkna, Abramis ballerus, Lota lota, Gymnocephalus cernuus, Sander lucioperca), but there are some adventive ones (Pseudorasbora parva, Carassius gibelio, Ameiurus melas, Lepomis gibbosus, Perccottus glenii) and a spontaneously immigrated species as well (Proterorhinus marmoratus).
    Specific natural values of the watershed are the isolated population of minnow (Phoxinus phoxinus) in Kulcsárvölgyi Brook and the frequently occurring mudminnow (Umbra krameri) in the lower reach of Hejő Brook.

  • Harmonic development and biodiesel
    91-95
    Views:
    81

    An increased expansion of renewable resources and biodiesel is observed and prognosed, since fossile energy resources are about to run out. Hungary achieved outstanding sunflower years in the recent years in worldwide comparison. In the future, the feedstock of biodiesel production can also be rape besides sunflower.
    According to the concept of harmonious development, the balance between nature, society, economy and human environments is represented by their mutual presumptive character. Research and development need to be aligned into this system. Our aim was to examine the advantages and
    disadvantages of biodiesel production in different environments, using a model to do so. In order to maintain the harmony, the existing resources have to be managed properly, taking the correlations of the system into consideration. Targeted technological developments are necessary, similarly to the improvement of energy safety and efficiency.

  • Investment funding programs on dairy farms in Hajdú-Bihar County
    11-16
    Views:
    169

    The dairy farming sector needs constant modernization of its buildings, machines and technology in order to maintain its competitiveness and productivity. For the greater scale investments, these companies try to apply for state funds in addition to their own financial sources. Therefore, the investment support system plays a great role by improving the competitiveness and modernity of these farms. In the last 10 years, 7 funding programs were available for dairy farms. In this research, 25 dairy farms were interviewed in Hajdú-Bihar County. The examined farms cover more than 50% of the milk production in Hajdú-Bihar County. The survey questions focused on the investment funding program use of farms between 2007 and 2017 and renewable energy investments including all programs. The results show how many tenders were submitted, how many were successfully evaluated and completed. All farms had at least two successfully evaluated projects. A correlation was found between completed projects by farm size and completed projects. The connection of the modernity index of dairy farms and the completed projects was also shown.

  • The Examination of the Effects of Value Modifying Factors on Dairy Farms
    36-40
    Views:
    68

    We wish to present a method to quantify the value modifying effects when comparing animal farms. To achieve our objective, multi-variable statistical methods were needed. We used a principal component analysis to originate three separate principal components from nine variables that determine the value of farms. A cluster analysis was carried out in order to classify farms as poor, average and excellent. The question may arise as to which principal components and which variables determine this classification.
    After pointing out the significance of variables and principal components in determining the quality of farms, we analysed the relationships between principal components and market prices. Some farms did not show the expected results by the discriminant analysis, so we supposed that the third principal component plays a great role in calculating prices. To prove this supposition, we applied the logistic regression method. This method shows how great a role the principal components play in classifying farms on the basis of price categories.

  • The supply of Liget-Thermal Spa and Experience Bath, according the opinion of the guests
    199-205
    Views:
    91

    During the last decades health, body and soul control became important issues. In the modern world this values are closely connected to the term of success, because we can be successful in every aspect of life: work, and personal life, if we can maintain our health, and fitness in a long run. From that comes that modern people are willing to spend money and time to take an active part in sporty but relaxing activities in a healthy environment in order to keep their fitness or just feel themselves well.
    In my study I will show the main motivating factors and demand elements of wellness and healthtourism, according the opinions of the visitors of Liget - Thermal Spa and Experience Bath. I will introduce different services that are suitable for satisfying this demand, furthermore we can get an insight by the results of questionnaire survey, how the motivating factors and the demand changes in case of different age groups.

  • Virtual Appliances for geospatial data management and processing in the Integrated Land Management System (ILMS)
    59-62
    Views:
    98

    Virtualization is increasingly taking on a key role in various system architectures which follow new platform concepts like Software as a Service (SaaS). This trend addresses more instant and short-term environments and comes with new methods and strategies for the distribution of mainly complex application stacks not only in large IT infrastructures. The paper presents how a so called Virtual Appliance can be set up in order to operate in virtual server environments using hypervisor software like Oracle Virtual-Box. Using the example of two server-side components within the Integrated Land Management System (ILMS), it will be shown that the use of state-of-the-art methods, standardized tools and interfaces on servers enables different aspects of environmental system management, analysis and planning.

  • The study of the fertilizing effect of wheat straw ash in a greenhouse experiment
    47-51
    Views:
    180

    The effect of wheat straw ash as a fertlizizer was studied in a pot experiment with an acidic sandy loam soil (pHKCl=4.9) with weak K and P supply. The test plant was ryegrass (Lolium perenne). The treatments were the following: 1. control untreated soil, 2. NPK fertilizer, 3. small dose of ash (1.4 g kg-1), 4 large dose of ash (2.8 g kg-1), 5. small dose ash completed with NP fertilizers. Soil parameters (pHH2O, pHKCl, ammoinum-lactate soluble P, K, 0.01 M CaCl2 soluble PO43--P, K, Mn, Cu, Zn ) and plant parameters (yield, P, K, Ca, Mg, Zn, Mn uptake) were investigated. Based on the analysis of the straw ash sample and the results of pot experiment it can be stated that the wheat straw ash is suitable for the fertilization of the studied soil. The small dose ash completed with NP resulted in the largest yield increment (43%). In order of the treatments the pHKCl changes to: 4.9, 4.8, 5.2, 5.8, 5.1. As the N : P2O5 : K2O ratio is 0 : 1: 3.5 in the wheat straw ash sample, to reach optimal yield ash should be completed with N and P.

  • Examination of the effects of the cropyear and the nutrient supply on the quality of winter wheat with the help of Győri’s Z-index
    121-125
    Views:
    61

    In the case of winter wheat,the knowledge of several quality features is needed to be able to determine precisely the real quality of the given
    wheat. Several systems have been worked out on the qualification of the winter wheat in Hungary and other countries as well. Evaluating the
    quality is being made more difficult because the different quality features take part in the development of the quality in different degrees and
    the values of the several quality features are in different intervals and these data are different dimension values. On the evidence of the
    results, in the case of considering several features,it can be difficult to rank into one concrete quality cathegory. Researchers are trying to
    develop complex quality index numbers in order to be able to define the quality more precisely. One of these complex quality index numbers
    is Gyıri’s, so called, Z-index.
    In three years from 2006 and 2008, we examined the change of the quality features of nine varieties of winter wheat with the help of the
    Z-index under the influence of the effects of the different cropyears and the fertilizer treatment. The results show that the Z-index of the
    examined varieties of winter wheat were influenced by several factors. Examining the data of the three different breeding years together we
    can observe the corrective effect of the different cropyears on the Z-index, and if we examine the three years separately and together, the
    differences of the quality features of the different varieties differentiate very well, and with the help of the Z-index the comparison of the
    types is easier and perspicuous, and the Z-index represents the different nutrient reactions of the different types as well. On the average of
    the three years, the types gave the best results at N120-150+PK nutrient level. Among the nine varieties the best results were given by Mv Suba,
    GK Békés and Mv Mazurka in the case of both low and higher nutrient levels.

  • Study of a Turkey Population for Gene Preservation
    48-52
    Views:
    106

    Genetic variability is very important in small populations. We examined an indigenous bronze turkey population which is bred for gene conservation in order to see if the current mating system maintains genetic variability. The present generation was surveyed using microsatellite markers and a computer model was used to simulate changes in the population over 100 generations.
    The data was analysed using the concept of entrophy from information theory instead of genetic variance so that we could more accurately measure genetic variability.
    The results indicate that the breeding method currently in use, rotational line mating, is acceptable with respect to preserving genetic variability, but new selection methods may provide additional protection against the loss of alleles.

  • Quality management and traceability in crop production
    273-277
    Views:
    133

    Today, food safety and quality is an everyday issue. Scandals in the food industry drew attention to the role and responsibility of food producers in the food chain. The European Union has set up a new integrated approach towards food safety, to which Hungary as an EU member and export-oriented country has also joined. The new “from farm to fork” principle states that food and feed production cannot be handled separately, as only feed produced from good quality raw materials can ensure safe food products. Another important issue is the traceability of products, allowing for the localization and recall of the defected item. In Hungary, there have been different documentation systems for tracking and tracing products, such as the land register in crop production, animal register in the livestock sector and hygiene registers in the food industry. In order to meet EU requirements, there is a growing number of initiatives to include primary production in the scope of food safety standards. The study introduces and compares the various management systems used in crop production.