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Einfluss der Umstellung von Stall- auf Weidefütterung auf den Vormagen pH-Wert von Milchkühen

Steinwidder, Andreas; Horn, Marco; Pfister, Rupert; Rohrer, Hannes and Gasteiner, Johann (2013) Einfluss der Umstellung von Stall- auf Weidefütterung auf den Vormagen pH-Wert von Milchkühen. Paper at: 12. Wissenschaftstagung Ökologischer Landbau, Rheinische Friedrich-Wilhelms-Universität, Bonn, 5. bis 8. März 2013.

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Summary

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 ruminal pH was highest (6.44) and deviation of H+-ion concentration was lowest. In P2 and P3 ruminal pH depressed significantly (6.24 and 6.21 resp.) and increased again from P4 to P6 (6.30, 6.33, 6.36 resp.). The short-term deviation of H+-ion concentration was highest in the first week of day and night grazing (P4).


EPrint Type:Conference paper, poster, etc.
Type of presentation:Paper
Keywords:Weidebeginn, Milchkühe, Weide, pH-Wert, Übergangsfütterung, Pansen
Subjects: Animal husbandry > Feeding and growth
Research affiliation: Austria > HBLFA Raumberg-Gumpenstein
Austria > Univ. BOKU Wien > Sustainable Agr. Systems - NUWI
International Conferences > 2013: Scientific Conference Organic Agriculture > Animal husbandry
Related Links:http://www.wissenschaftstagung.de/, https://www.verlag-koester.de/index.php?id=114&tx_fbmagento[shop][route]=catalog&tx_fbmagento[shop][controller]=product&tx_fbmagento[shop][action]=view&tx_fbmagento[shop][id]=1137&tx_fbmagento[shop][s]=beitrage-zur-12-wissenschaftstagung-okologischer-land
Deposited By: Steinwidder, Priv. Doz. Dr. Andreas
ID Code:21143
Deposited On:20 Feb 2013 15:24
Last Modified:22 Nov 2013 14:29
Document Language:German/Deutsch
Status:Published
Refereed:Peer-reviewed and accepted
Additional Publishing Information:Dieser Beitrag ist im Tagungsband der 12. Wissenschaftstagung Ökologischer Landbau
Ideal und Wirklichkeit: Perspektiven ökologischer Landbewirtschaftung
Erscheinungsjahr: 2013
ISBN-13: 9783895748158
Verlag Dr. Köster, Berlin

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