Dietary hydrolysed proteins have been shown to stimulate the non-specific immunity of various finfish species,
whilst the potential for immune stimulation of these feed ingredients in abalone has not been investigated. The
immune-stimulating potential of two hydrolysed protein sources (self-prepared fish silage and a commercial fish
protein hydrolysate) at two dietary inclusion levels in abalone diets was therefore measured in the South African
abalone Haliotis midae