Dietary yeast extract mitigates the negative effects of reduced fishmeal diet on growth and metabolism in mud crab (Scylla paramamosain)

Yeast extract (YE) can serve as a viable substitute for conventional protein sources to fishmeal (FM), and as a functional feed ingredient or additive. This study aimed to investigate its effects on growth performance, antioxidant capacity, non-specific immunity, protein metabolism, and the microstructural development of tissues in mud crab ( Scylla paramamosain ). Total of 144 juvenile crabs (average body weight: 18.71 ± 0.19 g), were randomly allocated into four experimental treatments: contro