Dietary substitution of protein concentrate of Ulva lactuca for soybean meal in the black tiger shrimp Penaeus monodon fry
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CitationSerrano Jr., A. E., & Santizo, R. B. (2014). Dietary substitution of protein concentrate of Ulva lactuca for soybean meal in the black tiger shrimp Penaeus monodon fry.
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Potential use of the sea lettuce Ulva lactuca replacing soybean meal in the diet of the black tiger shrimp Penaeus monodon juvenile AE Serrano Jr., RB Santizo & BLM Tumbokon -
Aquaculture, Aquarium, Conservation and Legislation, 2015 - BiofluxTo evaluate the biological value of incorporating the sea lettuce Ulva lactuca meal in the diet of the black tiger shrimp (Penaeus monodon), 3 diets were fed to groups of shrimps containing two levels (15% and 30% replacement of soybean meal) of the sea lettuce for 90 days. Biological parameters were determined either periodically or at the termination of the experiment. Specific growth rate (SGR) of shrimp fed the control diet and those fed with the diet containing 15% replacement were not significantly different from each other while that of shrimp fed 30% soybean replacement was slightly but significantly inferior. All other parameters such as survival rate, feed intake, food conversion efficiency, protein efficiency ratio protein and lipid deposited and body composition were all statistically similar between the experimental groups of shrimp. Thus, the 30% replacement level or 10.5% inclusion level could be used in the diet of the shrimp P. monodon. When performances were compared with the best result in incorporating U. lactuca protein concentrate from a previous study and that in the present study (both were 30% replacement or 10.5 inclusion level), they were statistically similar. Thus, the raw U. lactuca meal is recommended because it did not require additional processing to produce the concentrated seaweed.
Protein concentrate of Ulva intestinalis (Chlorophyta, Ulvaceae) could replace soybean meal in the diet of Oreochromis niloticus fry An experiment was conducted to evaluate the effects of replacing soybean meal with the protein concentrate of Ulva intestinalis (UPC) in the diet of juvenile Nile tilapia, Oreochromis niloticus. Four experimental diets were formulated to replace 0, 15, 30 or 45% of soybean meal by weight and were fed to group of fish for 90 days. Results showed that survival rates were high and independent of dietary treatment. Feed intake decreased as level of inclusion of UPC increased. Food conversion ratios of Nile tilapia fry fed the experimental diets were all statistically similar. Weight gain and specific growth rate of Nile tilapia fry fed with the diet containing 15% replacement was statistically similar with those of fish fed with the control diet. Thus, U. intestinalis protein concentrate could replace 15% by weight of the imported soybean meal without negatively affecting food conversion ratio, weight gain and specific growth rate; this substitution could mean slightly cheaper formulated diets for the Nile tilapia fry and fingerlings.
BookAQ Hurtado, MRJ Luhan & NG Guanzon Jr. - 2006 - Aquaculture Department, Southeast Asian Fisheries Development CenterThis practical book on the seaweeds of Panay, Philippines, acquaints and provides information to members of the academe and research institutions, policy makers, fishermen and businessmen regarding the taxonomy, distribution, ecology and economic importance of these resources. It consists of 4 major parts: (1) Introduction, which reviews the literature, habitat, distribution, morphological structure and reproduction; 2) Classification, which describes the classes to which the seaweeds generally belong; 3) Collection and preservation, which explains the procedure used in treatment of specimens; and, 4) Taxonomic list. A glossary is included, covering technical terms used. All species listed and described in this book are macrobenthic and were collected in Panay and Guimaras Islands.