Dipartimento di Scienze della Vita e dell'Ambiente, Università Politecnica delle Marche, via Brecce Bianche, 60131 Ancona, Italy.
Comp Biochem Physiol A Mol Integr Physiol. 2012 Apr;161(4):361-71. doi: 10.1016/j.cbpa.2011.12.009. Epub 2011 Dec 24.
In the last decades there have been several evidences that traditionally used live preys like rotifers and Artemia salina have nutritional deficiencies that result in a general decrease of fish health, causing anomalies in the development, in growth and in pigmentation. In this study a partial of total replacement of traditional live preys with preserved copepods that represent the natural food of the larvae was evaluated during Solea solea culture. In this study a positive effect of co-feeding preserved copepods in sole larviculture was observed since larvae fed this diet growth and survived better, showed a better tolerance to captive conditions and had a better response to the final thermal/density stress-test with respect to larvae fed a traditional diet. Morphometric data were fully supported by molecular and biochemical ones. Moreover, liver histological investigations, revealed that the inclusion of preserved copepods in the larval diet was able to improve lipid assimilation. In conclusion, preserved copepods may be considered a suitable food for sole when used as a supplement to the traditional diet based on rotifers and Artemia nauplii.
在过去的几十年中，有几项证据表明，传统上使用的活饵料，如轮虫和卤虫，存在营养不足的问题，这导致鱼类健康状况普遍下降，从而导致发育、生长和色素沉着异常。在本研究中，评估了在欧洲欧鳗养殖过程中，用代表幼虫天然食物的保存桡足类部分替代传统活饵料的效果。本研究观察到，在欧鳗幼体养殖中，与传统饵料相比，共同投喂保存桡足类对幼体有积极影响，因为摄食这种饲料的幼体生长和成活率更好，对圈养条件的耐受性更好，对最终的热/密度应激测试的反应更好。形态计量学数据得到了分子和生化数据的充分支持。此外，肝脏组织学研究表明，在幼体饲料中添加保存的桡足类能够改善脂肪的吸收。总之，当保存桡足类作为基于轮虫和卤虫幼体的传统饮食的补充时，可以考虑将其作为欧洲欧鳗的一种合适的食物。
