Residual flows as raw material for animal feed

The Netherlands must become less dependent on the import of protein-rich products in order to achieve the sustainability of livestock farming. This can be achieved by using more residual flows for the production of animal feed. The use of slaughterhouse waste seems to be the most promising option, but it will have to be adapted to the legislation and regulations, according to researchers at Wageningen University & Research.

Residual flows

The research report states that the total volume of animal feed raw materials in 2018 amounted to no less than 16.7 million tonnes. Half of these raw materials consist of basic raw materials and of co-products and residual products from the food industry. These are mainly protein-rich products. In addition, minerals, additives, fats and oils are used.

Slaughter waste

In addition to the frequently used co-products, other possible residual flows were also investigated. These include offal, green manure, ditches and verge mowers, unconsumed food and crop residues. Offal is the most promising way of limiting the import of protein-rich raw materials. Another interesting option is the cultivation of insects on waste products or unconsumed food.

The researchers conclude that there are a number of potential residual flows that can be used as a raw material for animal feed, but at the moment there are no quick wins.

Click here for the report