Viability of dietary substitution of live microalgae with dry Ulva rigida in broodstock conditioning of Pacific oyster (Crassostrea gigas)

The current study evaluated the microalgae replacement by dry macroalgae (Ulva rigida) in the reproductive success and biochemical composition of pacific oyster (Crassostrea gigas) during broodstock conditioning. Five nutritional regimes were tested: 100% macroalgae (Diet 1); 50% macroalgae+50% microalgae (Diet 2); 25% macroalgae+75% microalgae (Diet 3); 100% microalgae (Diet 4). An Unfed group was used as a negative control. The microalgae...