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    Gruber Leonhard, Univ.-Doz. Dr.

    Gruber Leonhard, Univ.-Doz. Dr.

    former research assistants
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    former research assistant

    Studies to update the feed evaluation in the Rosenau feed laboratory

    The digestibility of the organic mass determines the majority of the energy concentration of a feed. A high-quality method for...

    Efficient Cow - Final Report

    Efficient Cow - Final report analysis and optimization of production efficiency and environmental impact in the Austrian cattle industry...

    Updating the energy and protein assessment of basic feedstuffs based on chemical analyzes and in vitro studies

    The aim of the project is to develop and select cost-effective methods for the energy and protein assessment of...

    Feed evaluation of ruminant rations based on high-sugar hay in vivo and in situ

    The use of high amounts of concentrated feed in ruminant feeding has become increasingly established, although it has both animal health and environmental implications.

    Determining the origin and securing the origin of Styrian agricultural and forestry products

    As a result of increasing globalization and the free movement of goods, the importance of the regionality of traded goods has increased as a counter-reaction...

    Influence of the preservation process on the feed value and milk production of meadow forage

     Advice recommendations for the best possible form of preservation of meadow feed...

    Direction of use of dairy cows

    The experimental design involves the comparison of 4 different genotypes (Fleckvieh, HF conventional breeding, HF from New Zealand, HF special...

    Nutritional physiological evaluation of a chemical-thermal processing technique of feed barley

    The dairy cow plays a central role in Austrian agriculture. Due primarily to the economic conditions,...

    Use of zeolite and microorganisms in dairy cattle feeding

    As part of this project, the effects of natural zeolite (clinoptilolite) and a flavoring agent (herbal extract with lactic acid bacteria) are...

    Influence of the age at first calving on milk production and longevity of dairy cows

    The aim of this project is to determine the optimal rearing intensity for calves and heifers for the cattle breeds kept in Austria...

    Influence of the preservation process of meadow fodder on nutrient losses, feed value, milk production and milk quality

    As part of a research project to preserve meadow fodder, a modern hay drying system (frequency-controlled fan, dehumidifier...

    Determination of the protein digestibility of clover grass silage and alfalfa meal by fattening pigs

    Due to the gradual reduction in the use of conventional feed in the organic sector to zero percent in 2012, a protein feed...

    Testing the feed value of current silage maize varieties

    The yield and feed value of silage maize is determined by several factors. In addition to the vegetation stage and location, the influence of...

    Use of Starprot in dairy cattle feeding

     In Lower Austria (Weitersfeld, Waldviertel), the stillage resulting from the production of alcohol from wheat and corn is processed in a special...

    Influence of the vegetation stage of meadow forage

    The vegetation stage is the decisive factor influencing the feed value of the meadow forage. In addition to the basic results on feed intake...

    Analysis of basic and concentrated feed according to the Cornell Net Carbohydrate and Protein System and in-situ method

    As part of the scientific activity “Analysis of basic and concentrated feed according to the Cornell Net Carbohydrate and Protein System and the in-situ...

    Feed intake of dairy cows during the dry period

    The main factors influencing the feed intake of lactating dairy cows have been studied in recent years at the Institute for Livestock Research...

    Studies on nutrient mobilization of dairy cows during lactation

    Due to the reproductive process, the metabolism of a dairy cow experiences a deep decline during lactation and the subsequent dry period...

    Feed intake and digestibility (in vivo) of meadow forage at different vegetation stages

    The vegetation stage has a decisive influence on the feed value of grassland feed. The present experiment is intended to examine the influence...

    Influence of energy supply before and after calving

    The aim of this project is to examine the influence of inadequate and excessive energy intake compared to standard supply before and after calving...

    Grassland management and milk production

    This project deals with the connections between the intensity of grassland management and milk production. It should...

    Feed intake estimation formulas for dairy cows

    As part of a scientific activity, all feeding experiments carried out by the HBLFA Raumberg-Gumpenstein were used to determine the...

    2301: GF III

    Analysis of basic and concentrated feed according to the Cornell Net Carbohydrate and Protein System and the in-situ method

    2345: NEFA

    Material flows, feed yields and biodiversity with differentiated grassland management in Austria

    2355: Rumen sensor

    Relationships between rumen pH and feeding and significance for animal health

    2370: PanSens II

    Effect of different basic feed qualities on parameters of the rumen juice of cattle

    2371: Hay drying

    Influence of the preservation process of meadow fodder on nutrient losses, feed value, milk production and milk quality

    2376: fattening bull_high

    Bull fattening to high final fattening weights with different protein supplies in the final fattening - influence on daily weight gain, slaughter performance, meat quality and profitability

    2394: optBARLE

    Nutritional physiological evaluation of a chemical-thermal processing technique of feed barley in the ration of dairy cows in early lactation

    2398: Milk efficiency

    Influence of the direction of use and live mass of dairy cows on the nutrient efficiency, environmental impact and economic viability of milk production

    2402: Functional lining

    Functional feed for cows – added value as nutritional value; Scientists and students work together to improve the functional properties of feed for dairy cows

    2407: GRP

    Influence of the preservation process on the feed value and milk production of meadow forage

    2421: PowerStreams

    The self-cleaning power of rivers under the pressure of increasing nutrient pollution

    2423: MastEfficiency

    Dairy cattle types in bull fattening - performance, meat quality, efficiency, economics and environmental impact of 3 Holstein Friesian genotypes and Simmental cattle

    2432: DairyMast

    Fattening ability, slaughter performance and meat quality of offspring from dairy sheep and dairy goat farming

    2438: Update feed value

    Updating the energy and protein assessment of basic feedstuffs based on chemical analyzes and in vitro studies

    2443: Millet_Innobrotics

    Feed value and silage suitability of whole plant silages of various millet varieties in cattle feeding

    2956: Protein supply - dairy cows

    Influence of protein supply on feed intake, milk performance, rumen and blood parameters, animal health and N excretion of dairy cows

    3486: WT: Meadow feed CNCPS in situ

    Analysis of basic and concentrated feed according to the Cornell Net Carbohydrate and Protein System and the in-situ method for evaluating international energy and protein systems

    3546: WT: Clover Pig

    Determination of the protein digestibility of clover grass silage and alfalfa meal by fattening pigs

    3567: WT: half-day pasture

    Feed intake and milk production of dairy cows kept in stables or on part-time pasture with the aim of saving protein concentrates

    3586: WT: milk fatty acid

    Fatty acid patterns of Austrian alpine, full-grain and shelf milk as well as milk from intensive production

    3643: WT MIR ration

    Influence of ration composition on the mid-infrared spectrum of cow's milk