Nutritional evaluation of mysids Mesopodopsis orientalis (Crustacea:Mysida) as live food for grouper Epinephelus fuscoguttatus larvae
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The potential of mysids Mesopodopsis orientalis as live food source for grouper Epinephelus fuscoguttatus larvae was investigated. In comparison with Artemia biomass, a common live food source in larviculture, mysids contained significantly higher levels of protein, total lipid, eicosapentaenoic acid (EPA, C20:5n−3), and docosahexaenoic acid (DHA, C22:6n−3). DHA was not detected in Artemia biomass. Grouper larvae fed mysids from 35 to 55 days after hatching (DAH) had 2-fold and 3-fold higher specific growth rates and survival, respectively, than those fed Artemia biomass. DHA levels increased 6-fold while EPA levels remained constant in mysid-fed grouper larvae. In contrast, DHA and EPA significantly decreased in Artemia biomass-fed grouper larvae. Furthermore, the specific activities of amylase, lipase and protease generally significantly increased (P< 0.05) in both mysid-fed and Artemia biomass-fed grouper larvae from 35 to 55DAH. A marked increase in the specific activity of amylase was seen in mysid-fed than in Artemia biomass-fed grouper larvae. Results of the nutritional evaluation suggest that mysids are superior live food organisms than Artemia biomass for grouper larvae and could significantly improve production of grouper juveniles in the nursery phase.
CitationEusebio, P. S., Coloso, R. M., & Gapasin, R. S. J. (2010). Nutritional evaluation of mysids Mesopodopsis orientalis (Crustacea:Mysida) as live food for grouper Epinephelus fuscoguttatus larvae.
The authors express their appreciation and thanks to Zenith Gaye Orozco for technical assistance, Joseph Biñas for the assistance in statistical analysis of the data and preparation of the manuscript, Gwen Anuevo of the Laboratory Facilities for Advanced Aquaculture Technology, SEAFDEC/AQD for proximate analysis, and Irene Cabanilla of SEAFDEC/AQD Finfish Hatchery. We also thank Dr. Yukio Hanamura of Japan International Research Center for Agricultural Sciences, Tsukuba, Japan for species identification of mysids.
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Conference paperDL Lee & IC Liao - In Proceedings of the International Milkfish Workshop Conference, May 19-22, 1976, Tigbauan, Iloilo, Philippines, 1976 - Aquaculture Department, Southeast Asian Fisheries Development CenterIn studying the nutritional requirements of young milkfish experiments were conducted to develop a purified test diet. Mixtures of the purified constituents tested were: vitamin-free casein, vitamin-free gelatin, supplemented with L-tryptophan and L-cystine as the protein sources; shark liver oil and soybean oil as the far sources; and dextrin as the carbohydrate source. Mineral mixture and vitamin mixture were also added. The results showed that a test diet containing vitamin-free casein supplemented with L-tryptophan as the protein source, was best for the growth of young milkfish. Soybean oil was found to be a better source of fat. Vitamin mixture (4%) and mineral mixture (10%) were observed to promote growth in young milkfish. A purified test diet consisting of vitamin-free casein 60%, L-tryptophan 0.5%, soybean oil 10%, vitamin mixture 4%, mineral mixture 10%, carbohydrate and others 16% was thus suggested for young milkfish.
Book chapterMR Catacutan - In OM Millamena, RM Coloso & FP Pascual (Eds.), Nutrition in Tropical Aquaculture: Essentials of fish nutrition, feeds, and feeding of tropical aquatic species, 2002 - Aquaculture Department, Southeast Asian Fisheries Development CenterThe development of a feed that is both effective and economical for an aquaculture species in all its life stages is a continuous effort. Aquafeed development started when natural food sources in culture systems became inadequate and had to be supplemented with prepared feed. As fish stocking densities in culture increase, supplemental feeding is no longer sufficient. A complete feed that contains all the necessary nutrients in sufficient amounts to bring about good growth, survival, and reproduction is needed. Feed ingredients generally come from animal or plant sources and some are by-products of the food industry. There is no single feed ingredient or feedstuff that contains all the nutrients in adequate amounts. Thus, different feed ingredients are combined to make a feed that has the desired composition and nutrient levels. In combining various feed ingredients, it is important to know how much of each feed ingredient should be used to produce a cost-effective aquafeed. With the growth and expansion of aquaculture into a major industry, several fish species are being cultured; thus, the development of more efficient aquafeed formulations should continue. In developing cost-effective formulated diets, many important factors have to be considered. This chapter discusses these factors and the mathematical calculations in formulating a feed. It aims to enable students to formulate diets using purified and practical feed ingredients, and also to formulate effective supplemental and complete diets for aquaculture species.
Book chapterNV Golez - In OM Millamena, RM Coloso & FP Pascual (Eds.), Nutrition in Tropical Aquaculture: Essentials of fish nutrition, feeds, and feeding of tropical aquatic species, 2002 - Aquaculture Department, Southeast Asian Fisheries Development CenterThis chapter will help the reader understand and appreciate the basic principles of processing, preparation, storage, and quality control in the preparation of aquafeeds. The material in this section is presented in sequence beginning with the processing of basic ingredients to remove antinutritional factors, followed by steps in feed preparation, from the easiest to the more complex processes, and storage. This chapter presents methods and equipment that are useful not only for feed millers, but also for extension workers and fish farmers.