Apparent digestibility of selected feed ingredients in diets for grouper (Epinephelus coioides) juveniles
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This study was conducted to determine the quality of selected feed ingredients as protein sources in grouper diets, based on their nutrient composition and apparent digestibility coefficients for dry matter (ADMD) and crude protein (APD). A total of 56 juveniles were used for the 1st batch of test ingredients (Chilean fish meal, white fish meal, shrimp meal, defatted soyabean oilmeal, white cowpea meal and ipil-ipil leaf meal). 54, 72 and 48 juveniles were used for the 2nd, 3rd and 4th batches of test ingredients (squid meal, local meat and bone meal, meat solubles, soya protein concentrates and rice bran; tuna fish meal, imported meat and bone meal, blood meal, maize gluten meal and wheat flour; and poultry feather meal, lupin seed meal and maize germ meal, respectively). Apparent digestibility coefficients were measured in vivo. The apparent digestibility coefficients for ADMD ranged from 37-99%. Squid meal and meat solubles had the highest coefficients, whereas blood meal had the lowest. The APD of all feed ingredients tested were relatively high (79-99%), except for rice bran (43%) and blood meal (15%). ADMD values varied with the levels of fibre and other carbohydrate substances in the feed ingredients. Groupers could utilize dietary protein efficiently regardless of whether it was of animal or plant origin. High APD values were generally obtained in feed ingredients with high protein content. Low digestibility coefficients for feed ingredients could also be attributed to the processing methods used in their preparation.
Eusebio, P. S., Coloso, R. M., & Mamauag, R. E. P. (2004). Apparent digestibility of selected feed ingredients in diets for grouper (Epinephelus coioides) juveniles. In M. A. Rimmer, S. McBride, & K. C. Williams (Eds.), Advances in grouper aquaculture (pp. 75–78). Canberra: Australian Centre for International Agricultural Research.
PublisherAustralian Centre for International Agricultural Research
SeriesACIAR Monograph 110
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Book chapterVR Alava - 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 teaches the reader to: differentiate the different feeding strategies in pond culture; learn feeding management methods such as stock sampling and record keeping, calculating daily feed ration, choosing appropriate feed size, and methods of applying feeds; understand the impact of feeding management on water quality and environment and on the cultured animal’s growth, survival, and feed conversion ratio; and describe the different feeding schemes used to culture fishes (milkfish, tilapia, rabbitfish, bighead carp, native catfish, sea bass, orange-spotted grouper, and mangrove red snapper; and crustaceans (tiger shrimp and mud crab). Other species for aquaculture stock enhancement (donkey’s ear abalone, seahorses, window-pane oyster) are also discussed.
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.
ArticleC Lim, P Suraniranat & RR Platon -
Kalikasan, The Philippine Journal of Biology, 1979 - University of the Philippines, Los BañosPenaeus monodon postlarvae with an average weight of 15.61 mg each were fed fresh brown mussel meat and artificial diets containing casein, shrimp meal, squid meal and Spirulina as protein sources at a daily rate of 20 per cent of their biomass for 10 days. Results indicate that squid meal is best for growth based on weight gain, diet conversion, and protein efficiency ratio. Fresh brown mussel meat was essentiallly comparable to shrimp meal for growth but was inferior based on protein efficiency ratio and survival rate. Both squid meal and shrimp meal appeared to be good protein sources for P. monodon postlarvae.