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| Baldinger, Lisa; Baumung, Roswitha; Zollitsch, Werner; Knaus, Wilhelm. |
| Das Ziel der Studie war es, ökologisch angebautes italienisches Raygras (Lolium multiflorum Lam.) auf seine Eignung für die Winterfütterung von ökologisch gefütterten Milchkühen zu testen. Der dafür durchgeführte Fütterungsversuch mit zwei Gruppen laktierender Holstein Friesian-Kühe fand im Winter 2008/09 statt. In der Raygrasration ersetzte siliertes italienisches Raygras 50 % des Silageanteils der Kontrollration, die auf Gras-Kleegrassilage basierte. Beide Grundfuttermischungen wurden mit mäßigen Mengen zugekauften Kraftfutters ergänzt, um isoenergetische und isonitrogene Gesamtrationen zu gewährleisten. Kühe, die mit der Raygrasration gefüttert wurden, nahmen signifikant mehr Grundfutter auf als Kühe, die mit der Kontrollration gefüttert wurden (14,5... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Dairy cattle. |
| Ano: 2011 |
URL: http://orgprints.org/17641/3/Baldinger_17641.pdf |
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| Volkmann, Ariane; Rahmann, Gerold; Knaus, Wilhelm. |
| Ruminants and their great ability to live and produce on a diet rich in fibre have a great potential to contribute to a healthy and sustainable human nutrition (Hofmann 1989). Sadly, only in times of rising energy prices the following question is asked: How much food can we afford to feed to animals? Taking this aspect into account it is necessary to do as much research as possible on the topic of “Feed no Food” in ruminants’ nutrition. The Thuenen-Institute of Organic Farming in Trenthorst, Germany, has started 2009 the project “Feed less Food” with the dairy goats on the organic experimental station in Trenthorst, Holstein, Northern Germany. The main questions where the impact of reduced concentrate feed on animal welfare, milk yield and milk / milk... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Food security; Food quality and human health Feeding and growth. |
| Ano: 2014 |
URL: http://orgprints.org/24316/1/24316_MM.pdf |
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| Horn, Marco; Knaus, Wilhelm; Kirner, Leopold; Steinwidder, Andreas. |
| 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: Animal husbandry. |
| Ano: 2012 |
URL: http://orgprints.org/22878/1/IFOAM%202012_Longevity.pdf |
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| Ertl, Paul; Steinwidder, Andreas; Schönauer, Magdalena; Krimberger, Kurt; Knaus, Wilhelm; Zollitsch, Werner. |
| Der Beitrag der Tierhaltung zur menschlichen Ernährungssicherung wird aufgrund der ineffizienten Umwandlung von pflanzlichen Futtermitteln in tierische Produkte sehr kontrovers diskutiert. Das Ziel der vorliegenden Arbeit war es daher, anhand von nationalen Daten für die Jahre 2011–2013 den Beitrag von verschiedenen Tierkategorien (Rinder, Milchkühe, Maststiere, Schweine, Masthühner, Legehennen, Puten, Schafe und Ziegen) zur Netto-Lebensmittelproduktion in Österreich zu ermitteln. Rinder trugen als einzige Nutztierart sowohl bezüglich Energie als auch bezüglich Protein zu einer positiven Netto-Lebensmittelproduktion bei, das heißt sie produzierten über die tierischen Produkte mehr für die Menschen essbare Energie und essbares Protein, als sie in Form von... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Production systems Food security; Food quality and human health Policy environments and social economy. |
| Ano: 2016 |
URL: http://orgprints.org/32651/1/v4_Ertl.pdf |
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| Ertl, Paul; Knaus, Wilhelm. |
| Dairy cows are very efficient in converting fibrous forages into nutritious foods for humans. However, when fed potentially human-edible feeds, such as grains and pulses, dairy cows show very low efficiency in terms of net food production. In this debate, by-products are often mentioned as high quality feeds with reduced human-edible fractions for dairy cows. The aim of this feeding trial was therefore to evaluate the effect of a full substitution of a common concentrate mixture (COM) with a mixture including solely industrial by-products (BP) on milk production, feed intake, and the edible feed conversion ratio (eFCR) in organic dairy production. Cows receiving the BP mixture showed higher intakes of fibre fractions and ether extract, while starch intake... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Dairy cattle Food security; Food quality and human health Feeding and growth Recycling; Balancing and resource management. |
| Ano: 2015 |
URL: http://orgprints.org/27359/1/27359_ertl.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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| 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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