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| Registros recuperados: 58 | |
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| Steinwidder, Andreas; Horn, Marco; Pfister, Rupert; Rohrer, Hannes; Gasteiner, Johann. |
| In der vorliegenden Studie wurde der Einfluss von zwei Kraftfutterniveaus auf den Vormagen pH-Wert von Milchkühen, bei Verzicht auf Kraftfutteranfütterung vor der Abkalbung, untersucht. Dazu wurden 9 Kalbinnen und 11 Kühe zwei Wochen vor dem erwarteten Abkalbetermin Pansensensoren zur kontinuierlichen Messung des Vormagen pH-Wertes eingegeben. Alle Tiere wurden mit der Grundfutterbasis Heu und Grassilage gefüttert. Vor der Abkalbung wurde keine Kraftfutterfütterung durchgeführt. Nach der Abkalbung wurden die Tiere zwei Kraftfuttergruppen (Kon, Low) zugeteilt. In der hohen KF-Gruppe Kon stieg die Kraftfutteraufnahme von 2,5 kg TM (10 % KF i.d. Ration) in Laktationswoche 1 auf 7,2 kg TM (38 %) in Laktationswoche 5 an. In Low stieg diese von 1,4... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Feeding and growth. |
| Ano: 2014 |
URL: http://orgprints.org/27797/1/17_Steinwidder.pdf |
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| Velik, Margit; Steinwidder, Andreas; Baumung, Roswitha; Zollitsch, Werner; Knaus, Wilhelm. |
| The aim of the present study was to investigate and optimize the protein supply of organic dairy cows kept in Austrian grassland regions through the inclusion of maize silage into the diet. Therefore, two feeding trials were carried out. Trial I examined the effect of a partial substitution of purchased concentrates with home grown maize silage on feed and nutrient intake, milk performance and feed efficiency. Trial II was conducted to investigate the effect of maize silage or grain as an energy supplement to grass-clover silage based diets. In trial I milk yield decreased by 10%, however concentrate intake per kg milk was markedly reduced and dietary N efficiency and energy balance tendencially improved. Trial II revealed that even a small amount of maize... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Dairy cattle; Feeding and growth. |
| Ano: 2007 |
URL: http://orgprints.org/9304/1/9304_Velik_Vortrag.pdf |
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| Starz, Walter; Steinwidder, Andreas; Weißenbach, C.; Pfister, Rupert; Rohrer, Hannes. |
| Sward height is a key parameter for rotational grazing. Influence of different sward heights (low: 8 cm, medium: 10 cm, high: 12 cm) on DM yield and grass growth rate were investigated on an intensive grazed area at the research farm of the Organic Institute of AREC Raumberg-Gumpenstein during the vegetation period of 2013. The significant highest yields were found in treatment “high” (12,581 kg DM ha-1) and “medium” (12,119 kg DM ha-1). Treatment “low” reached a yield of 10,343 kg DM ha-1. During summer, grass growth rate was about 60 kg DM ha-1 day-1 in average. |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Pasture and forage crops; Farm economics. |
| Ano: 2017 |
URL: http://orgprints.org/31572/1/Einfluss%20der%20Weideaufwuchsh%C3%B6he%20auf%20Ertrag%20und.pdf |
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| Starz, Walter; Steinwidder, Andreas; Pfister, Rupert; Rohrer, Hannes. |
| Weiden im alpinen Raum Mitteleuropas weisen mehrere Grasarten auf. In klimatisch günstigeren Regionen werden intensiv genutzte Weiden hauptsächlich von Englischem Raygras (Lolium perenne) dominiert. Daher war die Fragestellung in diesem sechsjährigen Versuch (2007-2012), die Futterqualität solcher Bestände zu überprüfen, was mittels Weidekörben und sieben Beerntungen pro Jahr vorgenommen wurde. Die Energie- und Nährstoffdichten erreichten im Weidefutter hohe Gehalte und konnten mit den Raygras dominierten Weiden der Gunstlagen mithalten. So stiegen beispielswiese die Rohproteingehalte von 19 % im Sommer auf 23 % je kg TM im Herbst an. Die Energiedichte startet in Frühling mit Werten um 7 MJ NEL/kg TM und pendelte sich bis zum Herbst auf 6,2-6,5 MJ NEL/kg... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Soil; Farm nutrient management. |
| Ano: 2014 |
URL: http://orgprints.org/27799/1/14_Starz1.pdf |
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| Steinwidder, Andreas; Starz, Walter; Rohrer, Hannes; Pfister, Rupert. |
| In grünlandbasierter Milchviehhaltung wird eine hohe Grundfutterflächenleistung angestrebt. In einem Versuch wurde die Flächeneffizienz der Milchproduktion bei Vollweidehaltung (VW) und Silage-Stallfütterung ohne Kraftfutterergänzung (S-KF0) bzw. mit Kraftfutterergänzung (S-KF+) im Berggebiet Österreichs über drei Jahre mit insgesamt 63 Kühen verglichen. Die Dauergrünlandflächen wurden dazu gedrittelt, wobei in jedem Versuchsjahr 1/3 der Fläche über die Vollweideperiode als Kurzrasenweide genutzt wurde. Die restliche Fläche wurde jeweiliges als Grassilage über 4 Schnitte genutzt und in den Wintermonaten gleichmäßig den Silagefütterungsgruppen bei Stallhaltung zugeteilt. Bei Vollweidehaltung wurde ein höherer Grundfutter-Nettoertrag (gefressenes Futter) als... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Pasture and forage crops; Dairy cattle. |
| Ano: 2019 |
URL: http://orgprints.org/36046/1/Beitrag_113_final_a.pdf |
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| Horn, Marco; Steinwidder, Andreas; Knaus, Wilhelm; Kirner, Leopold. |
| The aim of this study was to highlight the economic importance of longevity in organic dairy cattle husbandry. Performance and reproductive data of 44,976 Austrian organic Simmental dairy cows were analysed by applying a bio-economic model. A farm scenario as well as different market situations were modelled. Overall costs declined with increasing longevity due to dropping replacement costs. Annual profit was influenced considerably by milk yield and longevity. Short-lived animals needed substantially higher annual milk yields than long-lived animals to achieve equal annual profits. The applied market scenarios showed an increasing importance of longevity in situations of increasing economic pressure (+20% of concentrate price). It has been proven that... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Dairy cattle. |
| Ano: 2013 |
URL: http://orgprints.org/21106/3/21106_horn.pdf |
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| Steinwidder, Andreas; Grünberger, Raphael; Schmidinger, Julia; Stangl, Sabrina; Walcher, Lisa-Marie; Fröhlich, Michaela; Krimberger, Kurt; Starz, Walter. |
| Jugendliche und junge Erwachsene bestimmen durch ihr Verhalten, ihre Erwartungen und Meinungen zur Bio-Land- und Lebensmittelwirtschaft wesentlich die zukünftige Entwicklung des Bio-Sektors mit. Im Rahmen der vorliegenden Studie wurden in Österreich Jugendliche und junge Erwachsene (15-19 Jahre bzw. 20-25 Jahre) gezielt zu Ihren Einstellungen zur Landwirtschaft und Lebensmittelproduktion, zu ihrem Konsum- und Einkaufverhalten, zu den Wünschen und Erwartungen an die Bio-Lebensmittelwirtschaft sowie zu ihrem Bio-Wissen befragt. 47 % der Jugendlichen und jungen Erwachsenen gaben an, dass sie eine sehr hohe und 26 % eine hohe Wertschätzung der Bio-Land- und Lebensmittelwirtschaft entgegen bringen. Eine überdurchschnittlich hohe Bio-Wertschätzung zeigte sich... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Markets and trade. |
| Ano: 2019 |
URL: http://orgprints.org/36047/1/Beitrag_114_final_a.pdf |
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| Starz, Walter; Steinwidder, Andreas; Pfister, Rupert; Rohrer, Hannes. |
| Continuous grazing provides low-cost forage with a high feeding value for milk and beef production and is a suitable pasture system in organic farming. To assess the forage feeding value of continuously grazed sward, a 3-field trial was carried out under harsh east Alpine conditions (680 m altitude, 7°C average temperature, 1000 mm annual precipitation). Forage contents of net energy (6.3-7.0 MJ NEL kg-1 DM) and crude protein (202-236 g kg-1 DM) varied on a high level during the vegetation period. Moreover, amounts of crude fibre (176-243 g kg-1 DM) and neutral detergent fibre (373-475 g kg-1 DM) were within the recommended range for ruminates. In conclusion, continuous grazing as a possible organic grassland use under harsh climate conditions can be... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Pasture and forage crops; Feeding and growth. |
| Ano: 2011 |
URL: http://orgprints.org/19342/1/Forage_feeding_value_of_continuous_grazed_sward_on_organic_permanent_grassland.pdf |
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| Steinwidder, Andreas; Starz, Walter; Gotthardt, Agnes; Pfister, Rupert; Rohrer, Hannes. |
| In a three year on-going project 10 organic dairy farms are supervised by developing farm adopted strategies to reduce the concentrate input in dairy cow feeding. The researchers and advisors consult and accompany the pioneering group. They stimulate active learning and record the results and experiences. Different approaches are used in the project to achieve the project aim: (1) discussions about possible strategies and their results (2) on-farm documentations and observational research, monitoring and comparison, (3) evaluation and systematic inclusion of the experiences of farmers (stable schools), advisors and researchers in the project, (4) describing “systems that work”. Within the first two project years, farmers reduced the concentrate input from... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Farm economics; Feeding and growth; Environmental aspects; Knowledge management. |
| Ano: 2013 |
URL: http://orgprints.org/21195/1/21195_steinwidder.pdf |
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| Zollitsch, Werner; Ferris, Conrad; Sairanen, Auvo; Rinne, Marketta; Steinwidder, Andreas; Horn, Marco; Moorby, Jon; Vestergaard, Mogens. |
| Dairy cow strains arising from conventional breeding programmes are frequently perceived as unsuitable for organic and low input milk production systems. While farmers have identified a number of breeds and strains as being ‘adapted’ to organic and low input systems, there is often little scientific evidence to indicate that these breeds are more appropriate than conventional genotypes. Thus the purpose of this study is to examine the response of different dairy genotypes (i.e. "conventional" versus "adapted") to an undersupply with nutrients and energy, which is a characteristic of low input systems with limited dietary supplementation and to provide information on the metabolic response of dairy cows to such dietary restrictions. |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Dairy cattle; Breeding and genetics. |
| Ano: 2014 |
URL: http://orgprints.org/23716/1/23716_MM.pdf |
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| Gregoritsch, Patrick; Steinwidder, Andreas; Gasteiner, Johann; Podstatzky, Leopold; Zollitsch, Werner. |
| Zu Laktationsbeginn kann der Energiebedarf bei Hochleistungskühen meist nicht ausreichend über die Futteraufnahme gedeckt werden. Das entstehende Energiedefizit kann die Gesundheit und die Fruchtbarkeit der Kuh negativ beeinflussen. Die Energiebilanz kann einerseits aus dem Energiebedarf und der Energieaufnahme direkt errechnet werden, die Sammlung der dafür benötigten Daten ist jedoch sehr aufwändig und unter Praxisbedingungen kaum durchführbar. Andererseits können jedoch Hilfsparameter wie Milch- oder Blutinhaltsstoffe herangezogen werden, um Aussagen zur Energiebilanz der Milchkuh zu erhalten. Die vorliegende Untersuchung soll Aufschluss darüber geben, ob die an punktuell gezogenen Proben untersuchten Gehalte an β-Hydroxybuttersäure (BHB) und freien... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Feeding and growth; Health and welfare. |
| Ano: 2017 |
URL: http://orgprints.org/32653/1/Biofachtagung_Stoffwechselparameter_Gregoritsch_etal.pdf |
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| Steinwidder, Andreas; Starz, Walter. |
| In a research project at HBLFA Raumberg-Gumpenstein 6 organic dairy farms are accompanied by converting to the „Low-Input“ seasonal grass-based system in the mountainous regions of Austria. After the first trial year (October 1st, 2004 – Septem-ber 30th, 2005), a pasture grass proportion of 36-60% in the total feeding ration per year could be determined, depending on each farm. Some farms completely dis-pensed with concentrate during the grazing period. Regarding the milk contents, a decreasing fat and protein percentage as well as an increasing urea content during the grazing period was observed. The project farms reached an average value of 0.26 cent of payments free of direct charge per kg milk. This value is a little bit higher than the Austrian... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Feeding and growth. |
| Ano: 2007 |
URL: http://orgprints.org/9001/1/9001_Steinwidder_Vortrag.pdf |
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| Starz, Walter; Steinwidder, Andreas. |
| The aim of this investigation was to evaluate the dung distribution and the N-balance on the pasture in a seasonal grass-based system in organic farming. This investiga-tion was carried out on the research farm (680 m altitude, 1000 mm precipitation hereof 600 mm during 200 days vegetation period, 6.5 °C average temperature, 34 ha grassland hereof 10 ha pasture areas, 14 brown swiss dairy cows 610 kg live weight and 14 holstein frisian 540 kg live weight) of the Institute for Organic Farming (HBLFA Raumberg-Gumpenstein) in the alpine area of Austria. Two pasture areas (former mowing pasture and permanent grassland), Beifeld (2 ha, plant up to sloped) and Stallfeld (1.8 ha, steady sloped), were exemplarily used to show the dung distribution and the... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Pasture and forage crops; Dairy cattle; Composting and manuring. |
| Ano: 2007 |
URL: http://orgprints.org/9188/1/9188_Starz_Poster.pdf |
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| Klaffenböck, M.; Steinwidder, Andreas; Fasching, C.; Terler, G.; Gruber, L.; Mészáros, G.; Sölkner, J.. |
| The composition of cow milk is strongly affected by the feeding regimen. Because milk components are routinely determined using mid-infrared (MIR) spectrometry, MIR spectra could also be used to estimate an animal’s ration composition. The objective of this study was to determine whether and how well amounts of dry matter intake and the proportions of concentrates, hay, grass silage, maize silage, and pasture in the total ration can be estimated using MIR spectra at an individual animal level. A total of 10,200 milk samples and sets of feed intake data were collected from 90 dairy cows at 2 experimental farms of the Agricultural Research and Education Centre in Raumberg-Gumpenstein, Austria. For each run of analysis, the data set was split into a... |
| Tipo: Journal paper |
Palavras-chave: Dairy cattle. |
| Ano: 2017 |
URL: http://orgprints.org/32819/7/Klaffenbock%20et%20al..pdf |
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| Ertl, Paul; Steinwidder, Andreas. |
| In the present study basic data was collected from eight organic dairy farms where no concentrates were fed (KF0). This data (from 2010 and 2011) was compared with results from about 140 Austrian organic dairy farms included in a federal extension program. The 140 farms were divided into three groups, depending on the amount of concentrate fed per cow and year (KF1: up to 975 kg, KF2: 976-1,400 kg, KF3: more than 1.400 kg). The ECM yield increased from 5,093 kg in KF0 to 6,828 kg in KF3. Calculated forage milk yield decreased by increasing concentrate supplementation from 5,093 kg (KF0) to 4,412 kg (KF3). Data related to animal health did not significantly differ between the four groups. However the calving interval was longer in KF0 but non-return-rate... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Feeding and growth; Health and welfare. |
| Ano: 2013 |
URL: http://orgprints.org/21405/1/21405_steinwidder.pdf |
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| Steinwidder, Andreas; Starz, Walter; Podstatzky, Leopold; Gasteiner, Johann; Pfister, Rupert; Rohrer, Hannes; Gallnböck, Markus. |
| The influence of calving season on milk yield, lactation length, composition of the diet, reproduction and nutrient supply for pasture-based systems in a mountainous region of Austria was examined with thirty-three dairy cows on an organic farm. Three groups of cows with a mean calving date of 17 November (group 1), 25 December (group 2) and 20 February (group 3) were compared. During winter periods the cows were housed and fed with grass silage, hay and a restrictive amount of concentrate. Cows were on pasture for 202 days in 2008 and 203 days in 2009 (177 day and night grazing days). The pasture area was continuously grazed at an average sward height of 4.7 cm. Calving in February (group 3) significantly depressed lactation length and milk-fat yield and... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Dairy cattle. |
| Ano: 2011 |
URL: http://orgprints.org/19339/1/Milk_production_from_grazed_pasture_in_mountainous_regions_of_Austria_%2D_impact_of_calvin_season.pdf |
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| Registros recuperados: 58 | |
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