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| Registros recuperados: 13 | |
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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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| 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; 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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| Horn, Marco; Steinwidder, Andreas; Gasteiner, Johann; Podstatzky, Leopold; Haiger, Alfred; Zollitsch, Werner. |
| The implementation of a seasonal, site adapted, pasture-based milk production system as applied in New Zealand and North Western Europe might be an alternative for the near future in Alpine regions. As in such a low-input system the fertility and secondary traits such as robustness against metabolic challenges of dairy cows is of crucial importance, it is questionable whether conventional dairy cow types, which were selected primarily for milk production under high-input conditions, are most suitable. Therefore the aim of this study was to compare two different genotypes concerning their suitability for an organic, low-input milk production system under Alpine conditions. Between 2008 and 2011 records from 91 lactations of Brown... |
| Tipo: Journal paper |
Palavras-chave: Production systems; Dairy cattle; Breeding and genetics. |
| Ano: 2013 |
URL: http://orgprints.org/25136/1/1-s2.0-S1871141313000668-main.pdf |
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| Horn, Marco; Steinwidder, Andreas; Podstatzky, Leopold; Gasteiner, Johann; Zollitsch, Werner. |
| The core task of sustainable milk production is the conversion of forage into milk, dairy products and, as a by-product, into meat. In Europe and North America, for decades dairy cows were selected for a high genetic merit for milk production under high input farming conditions. It is therefore questionable whether these "high input genotypes" are suitable for forage-based, organic farming systems. The objective of this study was to compare two cow types concerning their suitability for an Alpine organic, low input dairy production system. The cow types used were conventional Brown Swiss (BS) on the one hand and a specific strain of Holstein Friesian (HFL), selected for lifetime performance, on the other. Both cow types were managed within one herd in an... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Animal husbandry. |
| Ano: 2012 |
URL: http://orgprints.org/22879/1/IFOAM%202012_Cowtypes.pdf |
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| Horn, Marco; Steinwidder, Andreas; Podstatzky, Leopold; Gasteiner, Johann; Zollitsch, Werner. |
| The core task of sustainable milk production is the conversion of forage into milk, dairy products and, as a by-product, into meat. In Europe and North America, for decades dairy cows were selected for a high genetic merit for milk production under high input farming conditions. It is therefore questionable whether these "high input genotypes" are suitable for forage-based, organic farming systems. The objective of this study was to compare two cow types concerning their suitability for an Alpine organic, low input dairy production system. The cow types used were conventional Brown Swiss (BV) on the one hand and a specific strain of Holstein Friesian (HFL), selected for lifetime performance, on the other. Both cow types were managed within one herd in an... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Production systems. |
| Ano: 2013 |
URL: http://orgprints.org/21142/1/21142_horn.pdf |
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| Steinwidder, Andreas; Starz, Walter; Podstatzky, Leopold; Gasteiner, Johann; Pfister, Rupert; Gallnböck, Markus. |
| Bei „Low-Cost“-Vollweidehaltung von Milchkühen wird eine optimale Verwertung des Weidefutters angestrebt. Ein wichtiges Managementkriterium ist dabei die Abstimmung des Abkalbezeitpunktes auf die Vegetationsperiode. In der vorliegenden Untersuchung wurden die Effekte des Abkalbezeitunktes auf die weidebasierte Milchproduktion im Berggebiet untersucht. Es wurde dazu 33 Milchkühe der Versuchsherde des Bio-Lehr- und Forschungbetriebs Moarhof drei Versuchsgruppen zugeteilt. Das durchschnittliche Abkalbedatum der Gruppe 1 war der 17. November, der Gruppe 2 der 25. Dezember und der Gruppe 3 der 20. Februar. In der Stallfütterungsperiode erhielten die Tiere eine Grünlandration aus Heu und Grassilage sowie eine milchleistungsabhängige Kraftfutterergänzung. Die... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Dairy cattle. |
| Ano: 2011 |
URL: http://orgprints.org/17322/3/Steinwidder_17322.pdf |
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| Steinwidder, Andreas; Horn, Marco; Pfister, Rupert; Rohrer, Hannes; Gasteiner, Johann. |
| The effects of two concentrate levels on reticuloruminal pH values of lactating cows were determined. An indwelling wireless data transmitting system for continuous pH measurement was given to 9 heifers and 11 cows orally 2 weeks before expected calving. All animals were fed with hay and grass silage, no concentrate was fed before parturition. After parturition cattle were assigned to one of two concentrate supplementation levels (Kon, Low). In group Kon the concentrate intake per cow increased from 2.5 kg DM in week 1 (17 % concentrate of DMI) to 7.2 kg in week 5 (38 % concentrate) and in group Low from 1.4 kg in week 1 (10 % concentrate of DMI) to 3.8 kg DM in week 5 (24 % concentrate). Before parturition no significant effects of week on daily mean pH... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Feeding and growth; Health and welfare. |
| Ano: 2015 |
URL: http://orgprints.org/26851/1/26851_steinwidder.pdf |
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| Steinwidder, Andreas; Horn, Marco; Pfister, Rupert; Rohrer, Hannes; Gasteiner, Johann. |
| To investigate the effect of feed transition from barn feeding to pasture on the course of ruminal pH a study with 8 lactating dairy cows was undertaken. Therefore, an indwelling pH-measurement and data transmitting system was used. The experiment started at 27th March 2012 and a gradual transition from barn feeding to pasture feeding was done (periods P1-P6). After 7 days of barn feeding (P1) animals were given pasture progressively with increasing grazing time from 2 to 7 h/d (P2, day 8-14). In P3 (day 15-21) the cows spent 7 hours/d on pasture. Beginning on day 22, animals had 20 h/d access to pasture (continuous grazing), only semi-daily interrupted for 2 hours for milking and additional feeding (P4-P6). During the barn feeding period (P1), average... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Feeding and growth. |
| Ano: 2013 |
URL: http://orgprints.org/21143/1/21143_steinwidder.pdf |
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| Gregoritsch, Patrick; Steinwidder, Andreas; Gasteiner, Johann; Potztatzky, Leopold; Zolitsch, 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: Dairy cattle. |
| Ano: 2017 |
URL: http://orgprints.org/32823/1/Biofachtagung_Stoffwechselparameter_Gregoritsch_etal.pdf |
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| Registros recuperados: 13 | |
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