Please use this identifier to cite or link to this item: http://dx.doi.org/10.25673/110011
Title: The combined opportunities of supplementing varying concentrate-to-forage ratios with 3-nitrooxypropanol in the ration of dairy cows from the periparturient to the mid-lactation period
Author(s): Schilde, MatthiasLook up in the Integrated Authority File of the German National Library
Referee(s): Zeyner, AnnetteLook up in the Integrated Authority File of the German National Library
Dänicke, SvenLook up in the Integrated Authority File of the German National Library
Hummel, Jürgen
Granting Institution: Martin-Luther-Universität Halle-Wittenberg
Issue Date: 2023
Extent: 1 Online-Ressource (v, 149 Seiten)
Type: HochschulschriftLook up in the Integrated Authority File of the German National Library
Type: PhDThesis
Exam Date: 2023-06-12
Language: English
URN: urn:nbn:de:gbv:3:4-1981185920-1119665
Abstract: The greenhouse gas methane is formed in the rumen of dairy cows during the fermentation of carbohydrates. Methane formation contributes to an energy loss of feed energy. Dairy cows are challenged with a negative energy balance during the periparturient period. It was hypothesized that the combined feeding of the methane inhibitor 3-nitrooxypropanol (3-NOP) and high concentrate feed proportions (CFP) result in additive effects on reducing the methane emissions and the peripartal energy deficit. Feeding high CFP and 3-NOP reduced the methane emissions in an additive manner in vivo, but not in vitro. The effectiveness of 3-NOP was lower in rations with low CFP. The GreenFeed system measures the respiratory gas exchange and is suited for both, the quantification of methane emissions and the estimation of the energy balance. Feeding high CFP improved the energy supply of the dairy cow in the peripartal period, whereas the energy metabolism was not affected by the supplementation of 3-NOP.
Das Treibhausgas Methan entsteht bei der Fermentation der Kohlenhydrate im Pansen von Milchkühen. Die Methanbildung führt zu einem Verlust an Futterenergie. Milchkühe weisen im peripartalen Zeitraum eine negative Energiebilanz. Die kombinierte Fütterung des Methaninhibitors 3-Nitrooxypropanol (3-NOP) mit hohen Konzentratfutteranteilen (KFA) könnte die Methanbildung im Pansen additiv senken und das Energiedefizit im peripartalen Zeitraum mindern. Hohe KFA und 3-NOP senkten additiv die Methanemission in vivo, jedoch nicht in vitro. Die Wirksamkeit von 3-NOP war in Rationen mit niedrigem KFA geringer. Das GreenFeed-System zur Messung des Gaswechsels eignet sich zur Quantifizierung der Methanemission und ermöglicht die Schätzung der Energiebilanz. Die Fütterung hoher KFA verbesserte die Energieversorgung der Milchkuh im peripartalen Zeitraum, wohingegen der Energiestoffwechsel nicht durch die Supplementierung von 3-NOP beeinflusst wurde.
URI: https://opendata.uni-halle.de//handle/1981185920/111966
http://dx.doi.org/10.25673/110011
Open Access: Open access publication
License: In CopyrightIn Copyright
Appears in Collections:Interne-Einreichungen

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