Partial replacement of soybean meal with fermented copra meal in milkfish (Chanos chanos, Forsskal) diet
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Feeding 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.
CitationApines-Amar, M. J. S., Coloso, R. M., Jaspe, C. J., Salvilla, J. M., Amar-Murillo, M. N. G., & Saclauso, C. A. (2015). Partial replacement of soybean meal with fermented copra meal in milkfish (Chanos chanos, Forsskal) diet.
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Supporting ASEAN good aquaculture practices: Utilization of alternative protein sources for aquafeed to minimize pressure on fishery resources REP Mamauag -
Fish for the People, 2016 - SEAFDEC SecretariatAquaculture industry of Southeast Asia has been expanding steadily as a result of an increasing demand of food fish in the region as well as in the global scale. Aside from its contribution to the world’s fisheries, the aquaculture industry creates employment opportunities and provides income for the region’s fish farmers, as well as produces fish which is a major component in the diets of peoples in Southeast Asia. However, the fast development of aquaculture had been viewed as threat to sustainable capture fisheries production as the widespread use of fish by-catch in aquaculture feeds results in overexploitation of the fishery resources and to certain extent degradation of the resources. Recognizing the importance and urgency of addressing such concern, the Senior Officials of the ASEAN Member States responsible for fisheries adopted in June 2011, the Plan of Action on Sustainable Fisheries for Food security for the ASEAN Region Towards 2020 which includes provision on the need to “improve the efficient use of aquatic feeds by strictly regulating the quality of manufactured feed and feed ingredients and support continued research for developing suitable alternative protein sources that will reduce dependence on fishmeal and other fish-based products.” Along with such declaration, the SEAFDEC Aquaculture Department has been enhancing its R&D activities aimed at finding alternatives to fishmeal as feed ingredients in aquaculture feed formulations.
Apparent digestibility of selected ingredients in diets for juvenile grouper, Epinephelus coioides (Hamilton) Apparent digestibility coefficients (ADCs) for dry matter (ADCdm) and crude protein (ADCcp) of selected feed ingredients were determined in vivo for grouper using passive faeces collection (Guelph System). A reference diet (RF) and test diets (consisted of 70% RF and 30% test ingredient) with 1% Cr2O3 as an inert indicator were used. An RF contained 45% protein, 10% fat and 15.7 kJ g−1 metabolizable energy. Three isonitrogenous and isocaloric diets, each contained a test ingredient (white fish meal, white cowpea meal and ipil-ipil leaf meal), were used in a growth study based on ADCcp of feed ingredients. An RF without Cr2O3 was a control. The ADC values of experimental diets were also determined. In grouper, the ADCdm of white cowpea meal, defatted soybean meal, wheat flour and shrimp meal (74–76%) were significantly lower than that of squid meal (99%), but comparable with those of the fish meals (84–89%). No significant difference was observed between the ADCdm of ipil-ipil leaf meal, rice bran and wheat flour (56–73%). The ADCcp of white cowpea meal and defatted soybean meal were similar to those of the fish meals, squid meal and shrimp meal (94–99%). The ADCcp of wheat flour was comparable with that of ipil-ipil leaf meal (79–83%). Rice bran had the lowest ADCcp value of 43%. Based on specific growth rate (SGR), the growth of fish fed white cowpea meal-based diets was similar to that of the control fish (3.2–3.3% day−1). Also, no significant difference was observed between the ADCdm (68–72%) and ADCcp (88–91%) of white cowpea meal-based diet and the control diet. The results suggest that ADC values can be used as indicators to determine the nutritional value of feed ingredients. White cowpea meal can be incorporated as a protein source in practical diet for grouper at 20.5% of the diet with no adverse effect on growth.
Status on development and use of alternative dietary ingredients in aquaculture feed formulations in Viet Nam VA Tuan - In MR Catacutan, RM Coloso & BO Acosta (Eds.), Development and Use of Alternative Dietary Ingredients or Fish Meal Substitutes in Aquaculture Feed Formulation … Ingredients or Fish Meal Substitutes in Aquaculture Feed Formulation, 9-11 December 2014, Nay Pyi Taw, Myanmar, 2015 - Aquaculture Department, Southeast Asian Fisheries Development CenterThis paper reviewed fish catch production and estimated demand of aquafeed, fish meal, fish oil, soybean meal in Viet Nam for year 2013. Fish catch production was around 2.8 million metric tons (mt) while marine fish production was 1.9 million mt. Estimated marine trash fish production was 0.8 million mt with over 100 species including the dominant species anchovy (Stolephorus spp.), lizard fish (Saurida spp.) and pony fish (Leistognathus spp.). Approximately 0.5 million mt of marine trash fish was used for livestock, aquaculture and fish meal. Local marine fish meal consisting of protein content from 50 to 68% and catfish byproduct meal containing protein level from 50 to 60% were available. Based on FCR values of 5 major species including catfish, black tiger shrimp, white leg shrimp, Asian seabass, and snake head, aquafeed production was estimated at around 2.5 million mt. Marine fish oil/squid liver oil requirement was from 15.5 to 31 thousand mt. Fish meal demand was from 252 and 430 thousand mt. Almost all fish meal and marine fish oil used in aquafeed were imported. Moreover, soybean and other plant ingredients are potential alternative sources to replace fish meal and fish oil. Vietnamese farmers produced 168 thousand mt soybean while soybean demand amounts for aquafeed were from 693 to 1,140 thousand mt. In 2013, feedmills imported approximately 3 million mt of soybean meal (cake) from many countries in the world. Some other plant protein sources which were also imported, have good nutrient profiles but they contain some anti-nutritional factors. In the future, research on replacement of fish meal and fish oil with plant and animal by-product sources and feed additives for aquafeed should be studied. In particular, the management of local fish meal plants and capture fishery should be improved.