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dc.contributor.author Hernández, Luis Héctor Hernández en_US
dc.contributor.author Flores, Gerardo Hernández en_US
dc.contributor.author Araiza, Mario Alfredo Fernández en_US
dc.contributor.author López, Omar Angeles en_US
dc.date.accessioned 2012-10-15T23:32:48Z
dc.date.available 2012-10-15T23:32:48Z
dc.date.issued 2012 en_US
dc.identifier.issn 0792-156X en_US
dc.identifier.other IJA_64.2012.790 en_US
dc.identifier.uri http://hdl.handle.net/10524/31828
dc.description.abstract Juvenile rainbow trout (Oncorhynchus mykiss) were fed diets in which fishmeal was totally replaced by mixtures of Spirulina powder and soybean meal. Three experimental diets were formulated with 75% Spirulina and 25% soybean meal, 50% Spirulina and 50% soybean meal, and 25% Spirulina and 75% soybean meal. A commercial diet and a diet with 100% fishmeal served as controls. Diets were fed to triplicate groups of 10 juveniles with an initial weight of 6.8±0.4 g for 50 days. At the end of the experiment, growth performance, oxygen consumption, nitrogen and phosphorus excretion, protein digestibility, and serum protein content and lysozyme activity were evaluated. Data were analyzed by one-way ANOVA. Growth performance was not significantly affected by the experimental diets, but values tended to be lower as the level of dietary soybean meal increased. Among the experimental diets, the 75% Spirulina/25% soybean diet produced the best growth performance. Further, in fish fed this diet, the apparent coefficient of digestibility of protein was higher than 98% (as with all diets), oxygen consumption was lower and lysozyme activity was higher than in fish fed other replacement diets, and dissolved phosphorus and phosphorus in feces were similar or lower than in the controls. The present research shows the possibility of using mixtures of Spirulina powder and soybean meal as total substitutes of fishmeal in diets for juvenile rainbow trout. en_US
dc.format.extent 8 pages en_US
dc.relation.ispartofseries The Israeli Journal of Aquaculture - Bamidgeh en_US
dc.subject rainbow trout en_US
dc.subject soybean meal en_US
dc.subject Spirulina powder en_US
dc.subject growth performance en_US
dc.subject nitrogen excretion en_US
dc.subject phosphorus excretion en_US
dc.subject.lcsh Fish culture--Israel. en_US
dc.subject.lcsh Fish culture. en_US
dc.title Effects of Total Replacement of Fishmeal with Spirulina Powder and Soybean Meal on Juvenile Rainbow Trout (Oncorhynchus mykiss Walbaum) en_US

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