Details

Autor(en) / Beteiligte

• Valipour, Alireza
• Ozorio, Rodrigo O. A.
• Shariatmadari, Farid
• Abedian, Abdolmohammad
• Seyfabadi, Jafar
• Zahmatkesh, Asgar

Titel

Effects of Dietary Lipid Levels on Growth, Survival, and Molting of Yearling Narrow Clawed Crayfish, Astacus leptodactylus

Ist Teil von

• Journal of applied aquaculture, 2012-12, Vol.24 (4), p.316-325

Ort / Verlag

Philadelphia: Taylor & Francis Group

Erscheinungsjahr

2012

Link zum Volltext

Quelle

Taylor & Francis Journals Auto-Holdings Collection

Beschreibungen/Notizen

• The influence of dietary lipid level was evaluated on growth, survival, and molting of yearling narrow clawed crayfish, Astacus leptodactylus. Yearling crayfish were fed five isonitrogenous diets (35% protein), formulated to contain 4%, 7%, 10%, 13%, or 16% lipid. Crayfish (10.1 ± 1.6 g) were reared for 56 days in 60-L fiberglass tanks at 23 ± 1.7 °C, with flow-through water and continuous aeration. At the end of the trial, crayfish fed 13% lipid had the highest weight gain and specific growth rate, significantly different from crayfish fed 4% and 7% lipid (p < 0.05). Crayfish fed 13% lipid had a significantly higher survival rate (86.7%) than the animals fed 4% lipid (71%) (p < 0.05). Molting was not affected by lipid level (p > 0.05). We recommend 13% dietary lipid level for optimum growth and survival of Astacus leptodactylus in intensive cultivation.