Due to these issues and the striving of organic farming for nutrient cycles that are as closed as possible, it is important in organic dairy cattle feeding to increase the milk yield from the basic feed through an optimally coordinated basic feed ration and to reduce the dependence on purchased nutrients through the increased use of the company's own feed components.
As part of the project, three feeding trials
(1 trial per winter feeding period) will be carried out with the 20-cow dairy herd of the HBLA origin.

The rations use (clover) grass silage, corn silage, hay, the company's own concentrated feed (barley, triticale, peas, lupine) and moderate amounts of purchased concentrated feed.
Through the best possible coordination of the ruminal protein and energy provision from the farm's own feed resources, the possibilities and limits of the use of basic feed should be shown while at the same time reducing the use of concentrated feed.
Furthermore, the potential for increasing the use and usage efficiency of on-farm feed protein sources in organic dairy cattle rations will be demonstrated.
 
The primary goals are to optimize protein supply, milk production from basic feed and nutrient utilization efficiency as well as ensuring largely closed nutrient cycles.