Coutteau P, Van Stappen G, Sorgeloos P
Laboratory of Aquaculture & Artemia Reference Center, University of Ghent, Gent, Belgium.
Arch Tierernahr. 1996;49(1):49-59. doi: 10.1080/17450399609381863.
The stability of the coated lipid fraction of a standard weaning diet was verified by comparing growth and fatty acid incorporation for European sea bass fed diets with an identical formulation but prepared either by extrusion/coating or extrusion only. For each type of experimental diet, a (n-3) HUFA level of 1 and 2.5% of the dry diet was evaluated. European sea bass Dicentrarchus labrax L. were weaned and consequently reared for 23 days on the experimental diets in a recirculation system. A commercial weaning diet served as a control. Final individual dry weight of sea bass larvae weaned and ongrown for a total period of 30 days on the various diets did not differ significantly. The (n-3) HUFA content of the fish tissue was a reflection of the dietary (n-3) HUFA requirements of European sea bass during and immediately after weaning did not exceed 1% of the dry diet. The combined technique of cooking-extrusion of a basal diet followed by coating of a lipid emulsion proved to be a valid technique to prepare diets for studying quantitative fatty acid requirements of weaning and first ongrowing stages of marine fish. A standard diet with open formulation is proposed.
通过比较投喂相同配方但分别采用挤压/包衣或仅挤压制备的饲料的欧洲海鲈的生长情况和脂肪酸掺入情况，验证了标准断奶饲料包衣脂质部分的稳定性。对于每种实验饲料，评估了干饲料中（n-3）HUFA水平为1%和2.5%的情况。欧洲海鲈（Dicentrarchus labrax L.）断奶后，在循环系统中用实验饲料饲养23天。一种商业断奶饲料用作对照。在各种饲料上断奶并饲养30天的海鲈幼体的最终个体干重没有显著差异。鱼组织中的（n-3）HUFA含量反映了欧洲海鲈断奶期间及断奶后立即对饲料（n-3）HUFA的需求，干饲料中该含量不超过1%。基础饲料烹饪挤压后再包衣脂质乳液的组合技术被证明是一种有效的技术，可用于制备研究海水鱼断奶和初次生长阶段定量脂肪酸需求的饲料。提出了一种开放式配方的标准饲料。
