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• Evaluation of the relationship between main type traits and longevity in Hungarian Simmental cows

  205-209

  Evelin Török

  Imre Füller

  Barnabás Vágó

  János Posta

  Views:

  108

  The Hungarian Simmental cattle is a dual-purpose breed, having good milk and meat production characteristics. Simmental cows have some other important traits, for example, a longer productive life. The longevity or productive life is the time period between first calving and culling. The conformation contributes to productive life, reproduction, and milk production.

  The aims of this study were to analyze the longevity of Hungarian Simmental dual-purpose cows, to evaluate the effects of the size of the herd, age at first calving, main type traits (frame, musculature, feet and legs, mammary system), and combination of main type traits (frame and musculature, feet and legs and mammary system).

  Animal, age at first calving, herd*calving, musculature, the mammary system as well as the combination of mammary system and feet and legs were significant effects on longevity. The highest risk ratio was observed for cows first calved after 31 months. The risk of culling increased with increasing scores of musculature and decreasing scores of the mammary system. The highest risk ratio was estimated in category 11 (lower scores of mammary system with lower scores of feet and legs). In this case, the risk ratio was 36% higher than the reference group.

• Operation experiences of the PV system of an office building utilising environmental energy

  179-182

  Imre Török

  Views:

  101

  One of the most important research directions in the building sector is reducing the energy consumption. In Hungary the residential sector is the biggest energy consumer with 40% from the total energy consumption of the country. One possibility to decrease the energy consumption is using renewable energy sources. In this work I show a short description of PV cells and some measurements.

• Renewable energy strategy in Hungary

  101-104

  Imre Török

  Views:

  131

  The price of energy determinates our daily life. It is very necessary that we make energy strategy such as effective in everyday life, furthermore appoint a predictable development path. In these energy strategies the renewable energy and the energy efficiency is highlighted. This article describes about relevant pledges from recent years and possible improvements.

• Operational experiences of a geothermal heat pump system

  115-118

  Imre Török

  Views:

  120

  Energy consumption nearly 40% operation translates of the buildings in Hungary. In the last 5–8 years we can see a breakthrough in the field of low energy buildings, increasing the demand for buildings 'energy efficient', and realized several successful investments in our country. Nowadays thanks to the application system the number of public buildings increased environmental energy recovery system has been growing such as solar power, heat pumps.

• Renewables in higher education

  151-154

  Imre Török

  Views:

  134

  Unfortunately Hungary is not too rich in natural resources, so particularly important the materials and energy-saving technologies, waste recovery, increasing the share of renewable energy. It is a complex ecological strategy which priorities of the Hungarian education and calls on the student’s attention to ecological issues, pollution and the environmental load and look for specific opportunities for the realization of sustainable development. I consider, in addition to the specific operating continuously reduce costs of the campuses we should integrate the practical experience in to engineering education.

• Energy efficiency in Hungary and abroad

  147-150

  Imre Török

  Views:

  118

  Nowadays decentralized energy supply and the energy security are becoming more involved. We should increase the share of renewable in the energy mix, addition to improve the energy efficiency. Hungary is not an abundance of fossil resources it is particularly important in the materials and energy-saving technologies, waste recovery, increasing the share of environmental energy. Our country has outstanding opportunities many areas for example, solar energy, geothermal energy, so we need to devote more attention to renewables in the future.