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• Flow cytometric genome size estimation of Hungarian grass varieties

  9-16

  Lepossa Anita

  Dora Dallos

  Szabolcs Nagy

  Views:

  23

  In Keszthely, the breeding of grass species have several decades long history. Among other things, the aim of the maintenance work of the registered varieties is to preserve the ploidy levels that have been reported in the variety descriptions. Flow cytometry is a fast, modern tool for examining plant DNA content. In our pilot study, we compared the genome size of the four grass species maintained at the MATE Georgikon Campus with the data of known samples of similar ploidy levels published for the given grass species in the international database. Our results showed a high degree of agreement with the theoretically expected values, supporting the applicability of flow cytometry in plant breeding and in variety maintenance.

• Key theoretic and practical elements of Tessedik Sámuel in grassland based animal production systems

  45-48

  Laszlo Bukovinszky

  Views:

  52

  The successful life of Tessedik has been studied for about two centuries by the researchers. From among his activities of public utility the modernization of agricultural production is extremely outstanding.

  His theoretical and practical work covers the main elements of farming of that time period. His results can be studied in the comprehensive system of fooder production, grassland farming and animal husbandry by the analyses of his papers. In his theoretical works he describes the practice of fodder production and feeding of his age as well as the possibilities of more successful farming. His recommendations could be applied only partially among th given economical conditions.

• The Special Value of Pastures in Hungary

  5-24

  Imre Vinczeffy

  Views:

  84

  For centuries, Hungary used to be a beef store for European cities, from Strasburg to Venice. The cattle born and raised on Hungarian pastures were favoured for the excellent quality meat they produced.
  In the 19th century, the tradition of keeping livestock on pastures was gradually replaced by stabling and feeding farm animals with monocultures grown on ploughland. The best pastures were ploughed over and only 30% of those that survived were actually used for grazing. Today, it is mainly pastures in national parks that are used for grazing, while this practice is not typical elsewhere.
  Based on several decades’ experiments, it can be established that grazing livestock has several beneficial effects:
  – pastures provide the most valuable feed for livestock, which sustain their good health conditions,
  – livestock cease to be a source of environment pollution for towns and villages,
  – manure raises the nutritive value of pastures,
  – all the above makes farming more economical
  This study provides evidence for the above, based on experiments and production experience.

• Total GHG balance, a new method for determining GHG emissions of small livestock and mixed farms

  65-75

  Máté Répás

  Views:

  56

  The aim of our study is to find the most appropriate method for examining the impact of small, extensive livestock/mixed farms on climate change. We would like to describe a self–developed calculation, the application of which requires basic mathematical knowledge. With the method, we get an analysis that can be prepared in a short time, either in the case of real farms or model farms that exist in theory. In order to use it, a detailed description of a farm must be prepared, with the help of a year's work process, annual purchases and the summation of annual production. By drawing conclusions from the obtained results, the farm's GHG emissions can be optimized, and it can also help to find climate–neutral farming methods for the production of animal products.

• Methods for calculating GHG emissions from grassland based livestock farming

  35-39

  Mate Istvan Repas

  Views:

  98

  Understanding global climate change and finding ways to curb it is one of the greatest scientific challenges of our time, a number of studies examining the climatic effects of agriculture, including animal husbandry. Analyzing the most common methods of studying the climatic effects of animal husbandry, we can say that each method has its own shortcomings, their practical application is often difficult, and their results can be contradictory. In articles examining CO2 emissions from grasslands, we often come across results that contradict basic in-kind observations. In my opinion, it is worthwhile to define exactly what is meant by animal husbandry in the research on the topic, as there is no uniform conceptual definition, and in the future it would be expedient to develop a method for calculating GHG emissions from small livestock farms.