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structure de population

Aquatic Living Resources (1)

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Casein in the place of beef liver in artificial diets for common carp (Cyprinus carpio L.) larvae
Małgorzata Szlamińska, Anne-Marie Escaffre, Hélène Alami-Durante, Nicole Charlon, Pierre Bergot
Journal:

Aquatic Living Resources / Volume 3 / Issue 3 / July 1990

Published online by Cambridge University Press:

15 July 1990, pp. 229-234

Print publication:

July 1990
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Common carp larvae were fed artificial diets over 28 days at about 24 °C. Diets were based on yeast and either beef liver or casein. Survival rates of larvae were 76-92% with liver diets and 87-96% with casein diets. Larval growth was superior with liver diets (mean final weights 720-880 mg) than with casein diets (130-340 mg). Within-tank coefficient of variation of body weight increased with mean weight according to a generalized S-shaped curve. The skewness coefficient tended to increase with the mean weight, with higher values in the casein-fed group than in the liver-fed group. It is concluded that liver is not strictly indispensable for carp larvae diets and may be replaced by less complex components.