Urease activity in soybean meal: effect on its nutritional quality and on growth and survival of Penaeus monodon juveniles.
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Based on the results of a survey conducted on the urease activity (UA) in commercial shrimp feed containing soybean meal (SBM) (0.00-29. 70 ppm UA), a study was carried out to determine the effects of different heat treatments on the UA, and on the nutritional quality of SBM. The effect of these heat treated SBMs when incorporated into shrimp diet on the growth and survival of Penaeus monodon juveniles was likewise tested. Various levels of UA in SBM were obtained with different heat treatments. Six practical diets were formulated and contained 0.00 (SBM heated at !20°C for 20 min); 0.50 (SBM heated at 60°C for 160 min); 4.0 (SBM heated at 60°C for 80 min); 8.0 (SBM heated at 60°C for 40 min); 11.0 (SBM heated at 60°C for 20 min) and 22.0 ppm UA (without heating). These diets were fed to P. monodon (average weight = 4.24±0.10 g) juveniles for a period of 60 days. Results showed that protein quality in terms of amino acid content of SBM was not significantly affected by the different heat treatments. Weight gains of shrimps fed diets with 8.0, 11.0, 25.0 ppm UA were significantly lower than those fed other diets. Survival of shrimps was lowest with diets containing unheated SBM, but this was not significalltly different from those heated at 60°C. Heat treatment of SBM at 120°C is adequate to be an effective ingredient in shrimp diets.
Bautista-Teruel, M. N., & Subosa, P. F. (1998). Urease activity in soybean meal: effect on its nutritional quality and on growth and survival of Penaeus monodon juveniles. In M. Beveridge, R. Fuchs, J. Furberg, N. Kautsky, A. Reilly, & P. Sorgeloos (Eds.), Aquaculture Research and Sustainable Development in Inland and Coastal Regions in South-East Asia, Proceedings of an IFS/EU Workshop, Can Tho, Vietnam, 18-22 March 1996 (pp. 168–176). Stockholm, Sweden: International Foundation for Science.
PublisherInternational Foundation for Science
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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.
Partial replacement of soybean meal with fermented copra meal in milkfish (Chanos chanos, Forsskal) diet MJS Apines-Amar, RM Coloso, CJ Jaspe, JM Salvilla, MNG Amar-Murillo & CA Saclauso -
Aquaculture, Aquarium, Conservation and Legislation, 2015 - BiofluxFeeding trials were conducted to determine the optimum partial replacement level of soybean meal (SBM) with fermented copra meal (FCM). Isonitrogenous and isocaloric diets containing 0, 5, 10, 15, 20, and 25% of the locally produced FCM partially replacing SBM protein by 0, 12, 27, 41, 56, and 71%, respectively and fully replacing copra meal were formulated. The diets were fed to the fish with an initial weight of 2.83±0.14 g for 12 weeks. Thereafter, the best diet was further tested in a preliminary feeding trial in brackishwater grow-out ponds to verify the performance of the formulated diet against a commercial milkfish feed in an outdoor grow-out system. The results of the indoor tank feeding trial indicated that weight gain of the fish was significantly better in the group fed diet 2, with 5% dietary FCM but further increase in the FCM inclusion level up to 20% of the diet did not exhibit statistical differences against the control. Moreover in the preliminary pond feeding trial, growth and feed conversion ratio (FCR) of the fish fed the FCM diet were significantly higher than the commercial control diet. Survival and nutrient composition of the fish carcass were not adversely affected by the treatments. Hence, optimum dietary FCM inclusion level was determined at 5% of the milkfish diet replacing 100% copra meal and 12% SBM protein. However, in terms of economics, up to 20% FCM can be included in the diet replacing 56% SBM protein may be possible with growth comparable to the FCM-less control.
Defatted soybean meal and Leucaena leaf meal as protein sources in diets for Penaeus monodon juveniles F Piedad-Pascual & M Catacutan - In R Hirano & I Hanyu (Eds.), The Second Asian Fisheries Forum: Proceedings of the Second Asian Fisheries Forum, Tokyo, Japan, 17 - 22 April 1989, 1990 - Asian Fisheries SocietyPenaeus monodon juveniles, mean weight 0.38 g, were fed 12 practical diets with 30, 20 or 16% Peruvian fish meal, 15 or 35% defatted soybean meal (DSM), 10% Leucaena leucocephala , leaf meal (LM), and 15% shrimp meal with and without vitamins and/or minerals. The diets contained 42-48% crude protein and 11-13% crude fat. The animals were stocked at 10 per fiberglass tank, and reared in 40 aerated seawater in a flowthrough system for 8 weeks. Growth and survival were not affected by the level of DSM but significantly decreased in prawn fed diets with LM. Feed conversion ratios of prawn were better for complete diets than those where vitamins only were added. Poor feed conversion ratios and specific growth rates were obtained when no vitamins and minerals or only minerals were added to the diets.