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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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| Velik, Margit; Baumung, Roswitha; Zollitsch, Werner; Knaus, Wilhelm, Friedrich. |
| The aim of the present study was to investigate the influence of partial substitution of purchased concentrates with maize silage on feed intake, energy and nutrient supply, milk production and feed utilization efficiency in organic dairy cows. In the experiment, two winter rations were compared. In the experimental group (E) 2/3 of average herd concentrate intake were replaced by maize silage. In group E total dry matter, protein und energy intake was significantly lower than in the control group (C) (16.3 and 17.8 kg, 99 and 110 MJ NEL, 2170 and 2460 g crude protein, respectively). Milk yield decreased in group E by 1.7 kg, which was not statistically significant. Ruminal nitrogen balance and dietary protein to energy ratio was significantly lower in... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Feeding and growth. |
| Ano: 2006 |
URL: http://orgprints.org/7177/1/Paper_Veliketal.pdf |
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| Velik, Margit; Breitfuss, Sabine; Urdl, Marc; Hackl, Andrea; Steinwidder, Andreas. |
| Fatty acids have a major impact on nutritional and health issues in humans and can be used as a criteria to access the feeding intensity of livestock production systems. The purpose of the present study was to examine the fatty acid profile of dairy cow milk of different production systems: rations based on (1) maize silage and concentrates, (2) hay and concentrates, (3) continuous grazing on short grass and hay, (4) Alpine pasture systems, (5) milk from Austrian retail markets. About 250 milk samples were analysed. Regarding SFA und n-6 fatty acids, differences between milk origins were at about 10 % moderate. However, n-3 fatty acids and CLA were strongly influenced by production system. Milk from the continuous grazing system had at 1.4 g n-3 and 1.3 g... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Food security; Food quality and human health Feeding and growth. |
| Ano: 2013 |
URL: http://orgprints.org/21294/1/21294_velik.pdf |
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| Velik, Margit; Baumung, Roswitha; Zaludik, Katrina; Niebuhr, Knut; Zollitsch, Werner. |
| Feedstuffs were analysed from 9 conventional and 12 organic farms which previously reported feather pecking in their laying hen flocks. Essential amino acid contents were significantly higher in conventional than in organic diets, while the latter matched suggested nutrient contents. Declared amino acid contents and results of analyses were in good agreement. Particle size of mash feedstuffs deviated from suggested values: percentages of coarse and medium particles were higher and lower, respectively, than suggested. Severity of feather pecking slightly correlated with dietary methionine content and with methionine:ME. |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Poultry. |
| Ano: 2005 |
URL: http://orgprints.org/3543/1/3543.pdf |
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| Velik, Margit; Gangnat, Isabelle; Friedrich, Eva-Maria. |
| Aufgrund ökonomischer und kultureller Überlegungen zeigt sich im Grünland- und Berggebiet ein verstärkter Trend Rinder wieder auf der Weide zu halten. Zum Einfluss der Weidehaltung auf die Mastleistung sowie Schlachtkörper- und Fleischqualität zeigt die Literatur kein einheitliches Bild. Im vorliegenden Versuch wurden Kalbinnen (Fleckvieh x Charolais) im Stall mit einer Grassilage-Heu basierten Fütterung bzw. auf intensiver Kurzrasenweide mit Stallendmast bis 550 kg Lebendmasse gemästet. Die Ergebnisse der Studie zeigen, dass auf intensiven Weidesystemen die gleichen Mastleistungen und Schlachtkörperqualitäten wie bei mittelintensiver Stallmast erreicht werden können. Die Fleischqualität der Weidekalbinnen unterscheidet sich bis auf eine etwas gelbere... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Animal husbandry; Feeding and growth. |
| Ano: 2011 |
URL: http://orgprints.org/17433/3/Velik_17433.pdf |
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