INVENTORY OF VARIOUS AGRICULTURAL AND AGRO-INDUSTRIAL BY-PRODUCTS USABLE IN AQUACULTURE IN SENEGAL.

The study explores the potential of agro-industrial by-products available in Senegal to meet the challenges of fish farming feed. With a flourishing agriculture and agri-food industry accounting for a significant proportion of the national Gross Domestic Product (GDP), these by-products, such as groundnut oilcake, vegetable meal (maize, wheat), and cereal bran (rice, millet), offer an economical, local alternative to certain ingredients such as fishmeal, which is often expensive. The survey conducted in ten regions of Senegal revealed varying availability of resources depending on the agro-ecological zone. In the southeast (Tambacounda), annual groundnut cake production reached 51,157 tonnes, while maize production stood at 104,695 tonnes, with prices of 176 FCFA/kg and 360 FCFA/kg respectively. In central country, Kaolack produced a significant amount of maize (92,284 tonnes/year at 333 FCFA/kg) and groundnut cake (63,325 tonnes/year at 180 FCFA/kg), while This stood out with its annual production of 30,349 tonnes of cowpea powder (921 FCFA/kg). By contrast, availability in the north (Saint-Louis) is more limited, with only 4,854 tonnes of maize (384 FCFA/kg) and 1,766 tonnes of groundnut cake (280 FCFA/kg). These disparities are exacerbated by constraints such as seasonality, which reduces supply during the slack months (June to September), as well as by logistical costs and price fluctuations, particularly for key resources such as fish oil, the price of which reaches up to 1,800 FCFA/litre in certain regions of the South.These factors hinder the optimal exploitation of by-products, despite their economic and nutritional potential. However, the accumulated use of these local resources could reduce production costs in fish farming, promote food self-sufficiency, and support a circular economy.