Research was carried out into the effect of partial and total fishmeal (FM) replacement by a vegetable and animal proteins blend, as well as the inclusion of microalgae in diets for gilthead seabream (Sparus aurata L.). Fish of 64 g on initial weight were fed until apparent satiation for 88 days. The control diet (FM100) contained FM as the main protein source, whilst in FM25, FM10 and FM0 diets, the FM was replaced 75%, 90% and 100%, respectively, by a proteins blend consisting of Iberian pig meal (IPM) and vegetable protein meals. FM0+ was similar to FM0 diet but included 50 g/kg of Isochrysis aff. galbana (T-Iso). Results obtained in the final bodyweight and the specific growth rate indicate that the FM25 and FM100 diets achieved similar performances. An improvement in growth performance and nutrient utilization was observed in the FM0+ diet with respect to the FM0 diet. The highest retention efficiencies of protein, energy and essential amino acids were found in FM100 and FM25 diets. In conclusion, up to 75% FM substitution by a vegetable and animal proteins blend in on-growing gilthead seabream is feasible, in addition, the inclusion of Isochrysis aff. galbana (T-Iso) improves the growth and retention efficiencies in a non-FM diet.

中文翻译：

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伊比利亚猪粉和植物蛋白混合物替代鱼粉，并加入等鞭金藻aff。金头鲷 (Sparus aurata L.) 日粮中的 galbana (T-Iso)：对生长和饲料利用效率的影响

研究了用植物和动物蛋白混合物替代部分和全部鱼粉 (FM) 的效果，以及在金头鲷 ( Sparus aurata L.) 的日粮中加入微藻。喂食初始重量为 64 克的鱼，直到明显饱食 88 天。对照日粮 (FM100) 含有 FM 作为主要蛋白质来源，而在 FM25、FM10 和 FM0 日粮中，FM 分别被伊比利亚猪粉 (IPM) 组成的蛋白质混合物取代了 75%、90% 和 100%和植物蛋白餐。FM0+ 与 FM0 饮食相似，但包括 50 g/kg 的等鞭金藻。加尔巴纳(T-Iso)。在最终体重和比生长率中获得的结果表明，FM25 和 FM100 日粮取得了相似的表现。相对于 FM0 日粮，在 FM0+日粮中观察到生长性能和养分利用率的改善。FM100 和 FM25 日粮中蛋白质、能量和必需氨基酸的保留效率最高。总之，在生长中的金头鲷中混合植物和动物蛋白可替代高达 75% 的 FM，此外，还可以加入等鞭金藻aff。galbana (T-Iso) 提高非 FM 饮食中的生长和保留效率。