Compared to abalone fed G. cliftonii and Ulva sp. separately, feeding
enrichedmixedmacroalgae (G. cliftonii and Ulva sp.) had a synergistic
effect on abalone growth and FCR. Abalone fed enriched mixed
macroalgae diets were supplied with higher protein level and amino
acid levels, particularly lysine, the first limiting amino acid, compared
to animals fed enriched Ulva sp. or G. cliftonii, respectively
(Fleming et al., 1996). These results are consistent with previous
studies that have utilised mono- and mixed-macroalgae diets. For
example, Viera et al. (2011) reported superior growth performance
for Haliotis tuberculata coccinea fed a diet consisting of mixed
macroalgae species. The authors suggested that abalone fed mixed
macroalgae were supplied with a superior balance of essential nutrients
and amino acid profile to animals fed mono-specific macroalgal
diets, and concluded that fresh macroalgae can be fed to abalone
until market size (Viera et al., 2011).