Perméat de lactosérum/Perméat de lactosérum en poudre

What it is. Whey permeate (whey permeate powder) is a co-product of the dairy industry obtained from whey after removal of proteins and fat by ultrafiltration. The remaining liquid, rich in lactose and minerals, is then generally concentrated and dried into powder. It is listed under the Dairy products chapter of the feed materials catalogue (point 8.21.1).

What it is for. It is generally used as a source of lactose and minerals in feed formulation, in particular in diets for young animals (piglets, calves) where lactose supports palatability and early digestibility. It can also serve as a carrier or binder in compound feed and premixes. Use is generally adjusted according to lactose and mineral content and the target animal's digestive maturity.

Points to watch. No maximum inclusion level is specified in the available sources; the product's variable lactose, protein and mineral content should be checked batch by batch. As a dried dairy product, it is hygroscopic and must be stored in dry conditions to avoid caking and microbial degradation.