Aquaculture

TRANSITION TO CIRCULAR SUSTAINABLE AQUA FEEDS

Modern aqua feed manufacturing is progressively striving for circularity and sustainability. Although not entirely correct this is synonym for reduction in fish meal and oil levels. Vegetable protein sources such as vital wheat gluten, soy protein concentrate, pea proteins are lacking some essential typical fishy nutrient such as phospholipids and cholesterol. Other animal protein sources can partly resolve this and also are not accepted in all geographies due to consumer sentiments.

Protein and amino acid levels are important cost drivers in aqua feed formulations. Egg protein contains a nice level of extremely digestible protein (>98%) and an essential amino acid profile that matches and in several cases exceeds that of fish meal.

IMPROVING FISH AND SHRIMP PERFORMANCE

Apart from the egg’s well-known nutritional properties eggs contains several unique bioactive compounds that promote health and protecting the chicken embryo against pathogens. Most essential bioactive compounds are the immunoglobulin IgY, the glycoprotein Ovotransferrin, the antibacterial enzyme Lysozyme and Lutein & Zeaxanthin which are considered natural antioxidants.

EGG BINDING FEED COMPONENTS TOGETHER

Egg white is very rich in albumen, which when heated has excellent binding properties. The binding of feed ingredient in aqua feed is an important quality aspect. Next to the sticking of the feed ingredients the binding is important for creating the ingestible shape of the feed particles
(granulates, pellets) but also to create water stability. Especially in shrimp feeds this is of paramount importance.

Most often starch is used as a binder however starches
are pretty much indigestible for early stages of fish and
shrimp. A highly digestible proteinaceous ingredient as
OVOLIN is a real asset for the feed formulator.