A practical broodstock diet
for the mangrove red snapper, Lutjanus argentimaculatus
A.C. Emata, I.G. Borlongan-2003
Aquaculture, 225(1-4): 83-88
Abstract:
A practical broodstock diet (39% protein, 8.6% lipid)
was formulated for the mangrove red snapper as part of a project to ensure
consistent production of good quality eggs and larvae through broodstock
nutrition. Reproductive performance of mangrove red snapper broodstock fed
practical diet (n=14 females) was enhanced in comparison to those fed
raw fish (n=12 females). Broodstock fed practical diet had total egg
production of 82.34 million from 68 spawns for two spawning seasons while
broodstock fed raw fish produced 77.64 million eggs from 66 spawns. Mean
percent of egg viability, hatching rates and percent of normal larvae did
not vary between the two groups. However, broodstock fed the practical diet
had higher mean cumulative survival rate of eggs to normal larvae (40.4%)
than that of broodstock fed raw fish (35.2%). Also, survival activity index
(4.08) of broodstock fed practical diet was higher than that of broodstock
fed raw fish (2.97). The results clearly indicate the improvement of
reproductive performance of mangrove red snapper fed practical diet. Further
studies should focus on the specific nutrients that can ensure consistent
production of high quality eggs and larvae of the mangrove red snapper to
support its aquaculture.