A dynamic model to simulate potassium balance in dairy cows.

Please always quote using this URN: urn:nbn:de:0297-zib-64756
  • High performing dairy cows require a particular composition of nutritional ingredients, adapted to their individual requirements and depending on their production status. The optimal dimensioning of minerals in the diet, one of them being potassium, is indispensable for the prevention of imbalances. The potassium balance in cows is the result of potassium intake, distribution in the organism, and excretion, it is closely related with the glucose and electrolyte metabolism. In this paper, we present a dynamical model for the potassium balance in lactating and non-lactating dairy cows based on ordinary differential equations. Parameter values are obtained from clinical trial data and from the literature. To verify the consistency of the model, we present simulation outcomes for three different scenarios: potassium balance in (i) non-lactating cows with varying feed intake, (ii) non-lactating cows with varying potassium fraction in the diet, and (iii) lactating cows with varying milk production levels. The results give insights into the short and long term potassium metabolism, providing an important step towards the understanding of the potassium network, the design of prophylactic feed additives, and possible treatment strategies.

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2019/01/01

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Author:Mascha Berg, Julia Plöntzke, Sabine Leonhard-Marek, K.E. Müller, Susanna Röblitz
Document Type:ZIB-Report
Tag:cow, potassium, model, ode
MSC-Classification:34-XX ORDINARY DIFFERENTIAL EQUATIONS
92-XX BIOLOGY AND OTHER NATURAL SCIENCES
CCS-Classification:J. Computer Applications
Date of first Publication:2017/08/17
Series (Serial Number):ZIB-Report (17-47)
ISSN:1438-0064
Published in:Appeared in: Journal of Dairy Science 2017
DOI:https://doi.org/10.3168/jds.2016-12443