Developing Artemia Enriched Herbal Diet for Producing Quality Larvae in Penaeus monodon, Fabricius

摘要

Post larvae (PLl- 30) of Penaeus monodon were fed five different herbal medicinal diets namely MDl, MD2, MD3, MD4 and MD5, prepared using Hygropfiila spinosa, Withania somnifera, Zingiber officinalis, Solanum trilobatum, Androgr aphis paniculata, Psoralea corylifolia and cod-liver oil Artemia franciscana nauplii and pre-adults were enriched with the above five diets and fed to the larvae of P monodon. Survival, bioenergetics and specific growth rate were studied. To evaluate the quality of post larvae, they were subjected to salinity (0 and 50‰), pH (6 and 10) and formalin stress (80 and 160 ppm) shocks. Post larvae fed the herbal medicine enriched Artemia survived to a maximum of 95% in the MDl group whereas the unenriched Artemia fed group showedonly 89% survival. The unenriched Artemia fed group consumed 103 78±Q,93 mg animal 30 days food whereas the herbal medicinal diets helped to increase the food consumption significantly (P<0 05) and the MDl enriched groups consumed the maximum (121 68±1 84 mg animal 30 days) food, A similar pattern was also noticed in absorption, production and metabolism. The average absorption efficiency (86 17%) was not significant (P>0 05). The unenriched Artemia fed post larvae had a conversion efficiency of 17 47±0 21% whereas in the herbal medicinal diets enriched Artemia fed groups, efficiency increased significantly (P<0 05) to a maximum of 20 29± 0 23% in the MDl fed group The same pattern was also observed in net production efficiency. Specific growth rate also increased from that of the unenriched group. Among the five different herbal medicinal diets eniiched Artemia and unenriched Artemia fed groups, when subjected to stress test, the MDl group exhibited the highest resistance followed by MD3, MD5, MD4 and MD2 enriched Artemia fed groups.