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| Registros recuperados: 15 | |
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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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| 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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| 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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| 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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| 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; Edler, Veronika; Steinwidder, Andreas; Kaipel, Liane. |
| The aim of the present study was to evaluate the transfer of learning of the professional training course “Ausbildung zum Weidepraktiker”. An online questionnaire (17 questions) was developed and sent out to alumni of the course. A return rate of 48 % was achieved. The results show that a number of the studied key aspects of the course were already implemented by the participants before visiting the training. Actions implemented because of the professional training were these which required expert knowledge. More than 70 % of the participant believed that the training motivated them to optimise their pasture management and 67 % rated the training´s benefit for agricultural practice as excellent. The majority of the alumni believed that there should be a... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Education; Extension and communication Knowledge management. |
| Ano: 2015 |
URL: http://orgprints.org/26988/3/26988_horn.pdf |
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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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| 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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| Horn, Marco; Steinwidder, Andreas; Pfister, Rupert; Zollitsch, Werner. |
| The present study compared the response of two different dairy cow types to the reduction of concentrate supplementation within an Alpine low-input system. Conventional Brown Swiss (BV) and a strain of Holstein Friesian selected for lifetime performance (HFL) were assigned to one of two concentrate supplementation levels which included 618 kg DM (Kon) and 279 kg DM (Low) of concentrates per cow and lactation. During the two years of the study, data were collected of 21 lactations from 13 individual BV animals and 29 lactations from 21 individual HFL animals. No significant interaction between breed and dietary treatment was observed for milk production, body condition score or reproductive performance. Cows fed the Low diet had significantly lower... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Dairy cattle; Animal husbandry; Feeding and growth. |
| Ano: 2015 |
URL: http://orgprints.org/26987/1/26987_horn.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; 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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| Registros recuperados: 15 | |
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