Lely is introducing a unique concept for autonomous feeding with fresh grass

Maassluis, 6 October 2020 - Lely is launching the first concept for the fully autonomous harvesting and feeding of fresh grass: Lely Exos. With this system, dairy farmers can use a large part of their grassland to produce fresh feed. As a result, they use the nutritional value of their roughage more efficiently, and can produce more milk from their own grassland. This solution is completely compatible with making dairy farms circular. In addition, the system saves on labour and feed costs.

Oct. 6, 2020


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‘Good roughage has always been important for the health and milk yields of cows. The Exos is a new breakthrough in exploiting grassland. A dairy farmer can now use the raw materials available optimally. The nutritional value of fresh grass is 10 to 20% higher than that of silage grass, because there are no significant losses during harvesting, conservation and feeding,’ according to Korstiaan Blokland, Head of Innovations at Lely.

‘This unique system is based on an electric vehicle that autonomously mows, loads and dispenses grass in the barns. Exos provides fresh grass frequently, day and night. This improves the taste and intake of fresh grass. Manually feeding cows in the barn with fresh grass is based on the same principle, but the options are limited and it’s very labour-intensive. This system operates 24 hours a day, so it’s not limited by manpower or time. With Exos, Lely is introducing an innovation that is fully compatible with the transition to sustainable and circular dairy farming.’

The benefits of fresh grass

Automatic feeding with fresh grass results in considerable savings. If a dairy farm uses more fresh grass, it needs less silage and can save on concentrates and other feed purchases. Experience at test farms has shown that a dairy farm can meet half of its roughage requirements with fresh grass during the growing season, from early spring to late autumn. The savings can reach more than 2 cents per litre of milk. 

Redesign of technology in the field

This completely new approach to grass was an opportunity to redesign mowing and harvesting technology. The system is tailored to the daily needs of cows, and designed to make the most of the long grass-growing season. The low weight and soil-friendly technology of this machine means it can mow from early spring to late autumn. The careful mowing method keeps the grass fresh and tasty.

In combination with the Vector

The Exos operates in tandem with the Lely Vector automatic feeding system. Both systems provide, alternately, fresh grass and other feed components. The Exos constantly monitors the percentage of fresh grass in the ration. The system also collects data in the field, so that the farmer can respond immediately to the grass supply at any given moment.

The next steps in automatic mowing and feeding

One of the things Lely is investigating as a next step is using the system to dose a specific amount of liquid fertiliser adapted to each location. This is an extension of the Lely Sphere system, which creates valuable circular fertilisers.

The first prototypes of the Exos are already operational on test farms, where as much information as possible about the autonomous harvesting of fresh grass will be generated by extensive testing in daily practice. In the coming years, Lely will further develop the system so that it can be sold commercially.

For more information, please contact Esther Lelij, Corporate Communications Manager at Lely International NV: communications@lely.com

For more information, go to www.lely.com/exos