Optimising ice slurry parameters for humane slaughter of Nile tilapia (Oreochromis niloticus) in semi-intensive systems

Year: 2026

Wasseem Emam
Complutense University of Madrid, Spain

Research Grant: £6,300

This project will evaluate and optimise the use of ice slurry as a more humane method of slaughter for Nile tilapia (Oreochromis niloticus), the most widely farmed fish in Africa. In most tilapia farms in the Global South, fish are harvested by placing them directly on ice, a method that can leave them conscious for prolonged periods. We will conduct controlled experiments in the lab to test how key parameters (e.g., ice-to-water ratio, salinity and ambient temperature) affect the speed of loss of consciousness. By generating clear, evidence-based protocols, the project aims to reduce suffering during slaughter and provide farmers with a practical, low-cost method to improve fish welfare at harvest.