Einsatz von lebenden Hefen in der Milchviehfütterung

Publication Type

Contribution to conference

Authors

Scheidemann, Ch. und Steingass, H.

Year of publication

2005

Published in

Proc. 14th Conference on Nutrition of Domestic Animals

Editor

A. Pen

Series/labeling

Zadravec-Erjavec Tage

Page (from - to)

72-84

Conference name

Tagung über die Ernährung von Haustieren

Conference location

Radenci (Slovenija)

Conference date

14.-15.11.2005

Keywords

dairy cow, Lebendhefen, Milchkuhfütterung, Milchvieh

In the first part of this manuscript a literature review is given about the impact of live yeast on rumen digestive physiology and animal Performance. The mode of action of live yeast is not yet completely understood, however. It is assumed, that yeast improves the rumen environment by production of different growth factors such as peptides, amino acids, carbonic acids and vitamins and through its utilisation of oxygen. This promotes the growth of specific rumen bacteria and fungi, especially of cellulose and lactate utilising bacteria and a stabilisation of rumen pH by reduced lactate concentrations may be the consequence. However, results from the literature vary considerably which indicates that specific physiological conditions must be present to enable the yeast to act beneficial on rumen fermentation. A stabilisation of rumen conditions may improve nutrient digestibility and both in turn has a positive impact on feed intake and animal Performance. This is proved by numerous studies. In the second part, some results of own investigations on the use of live yeasts in high yielding dairy cows in the first 200 days of lactation are presented. In this study, the supplementation of live yeast lead to an increase in milk yield of about 2kg per day with no effect on feed intake. This caused a lower energy balance which in turn lead to a delayed live weight gain.