Low inclusion levels produce acceptable growth, survival, possibly stimulate the immune system
Written by: Monika Weiss, Anja Rebelein and Matthew J. Slater / GAA website
More than half of the aquaculture species produced are fed formulated feeds, and several studies have focused on additional terrestrial proteins as ingredient sources – mainly legumes like field peas, lupin, and fava beans – that are regionally and organically produced. Legumes provide nitrogen for themselves and subsequent plants and thus reduce the overall fertilization needs during crop rotation.
Several different cultivars of lupin have been tested with different aquaculture species and with generally promising results. Lupin digestibility has been shown to exceed that of soy in Atlantic salmon. Extruded lupin seed meal has been found to offer good digestibility coefficients, especially for protein and energy, in trout and turbot, and can greatly substitute fishmeal in European seabass diets. At least 40 percent of fishmeal protein in diets of the black tiger shrimp (Penaeus monodon) can be replaced by lupin kernel meal (used on a protein‐equivalent basis), without adverse impacts on growth. And a study showed that the Andean lupin (Lupinus mutabilis) can replace at least half of the fishmeal protein – equivalent to a third of the total protein – in the diet of Pacific white shrimp (Litopenaeus vannamei) without negatively influencing growth and feed conversion. However, information about the effects of metabolic and immune parameters is missing so far.
This article – adapted and summarized from the original publication [M. Weiss et al. 2020. Lupin kernel meal as fishmeal replacement in formulated feeds for the Whiteleg Shrimp (Litopenaeus vannamei). Aquaculture Nutrition 2020;00:1–11.] – reports on a study to evaluate narrowleaf lupin (Lupinus angustifolius) seed meal as a sustainable diet component for Pacific white shrimp in controlled feeding experiments conducted in a recirculating aquaculture system.
This study is part of the project “TRansition paths to sUstainable legume‐based systems in Europe” (TRUE), and it has received funding from the European Union’s Horizon 2020 research and innovation programme under grant agreement no. 727973. The authors thank the staff from the “Centre for Aquaculture Research” (ZAF) for conducting water quality analyses and daily routine activities.
The complete article is available through the GAA blog website, and can be accessed here: