Utilization of microalgae Schizochytrium sp. in non-fish meal, non-fish oil diet for yellowtail (Seriola quinqueradiata)
Utilization of microalgae Schizochytrium sp. in non-fish meal, non-fish oil diet for yellowtail (Seriola quinqueradiata)
复制标题
DOI：
10.1111/are.15732
复制
发表时间：
2021-12-30
影响因子：
2
通讯作者：
Satoh, Shuichi
中科院分区：
文献类型：
--
作者：
Seong, Taekyoung;Matsuyoshi, Jumpei;Satoh, Shuichi
以裂殖壶菌粉和植物蛋白为饲料源，进行了黄尾鱼无鱼粉和无鱼油饲料的饲养试验。对于第一个实验，准备了三种等氮和等维生素的饮食。对照饲料由鱼粉和鱼油组成，另一种饲料由植物蛋白源和鱼油[FO]配制。FO日粮中的鱼油完全被菜籽油和裂殖壶菌所替代，富含DHA [NFO 1]。重复组的黄尾鱼（Seriola quinqueradiata，190.6克）喂养的饮食99天。NFO 1组表现出最低的适口性和生长。而NFO 1组的脂肪酸组成与FO组相似。为第二个试验准备了四种非鱼粉饲料，其中增加了诱食剂的量。100FO饮食的配制类似于第一个实验中的FO饮食，但含有更高量的鲣鱼肽。其他饲料逐渐采用裂殖壶菌粉替代100 FO饲料中的鱼油，分别为35%、70%和100%[65 FO、30 FO、NFO 2]。重复组的黄尾鱼（186.0 g）喂养饲料84天。鲣鱼肽添加量的增加有利于提高生长效果，但与藻粉利用率成反比。结果表明，利用植物蛋白源和裂殖壶菌诱导足够量的诱食剂，可以开发黄尾鱼的非鱼粉饲料。此外，在利用微藻开发无鱼粉、无鱼油饲料的同时，还需要进一步研究黄尾鱼对必需脂肪酸的利用。
Two feeding experiments were conducted to develop non-fish meal and non-fish oil diet for yellowtail with plant protein sources and Schizochytrium meal. For the first experiment, three iso-nitrogenous and iso-lipidic diets were prepared. Control diet was composed with fishmeal and fish oil and the other diet was formulated with plant protein sources and fish oil [FO]. Fish oil in FO diet was totally substituted by rapeseed oil and Schizochytrium sp., which was rich in DHA [NFO1]. Duplicate groups of yellowtails (Seriola quinqueradiata, 190.6 g) were fed the diets for 99 days. NFO1 group showed the lowest palatability and growth. However, fatty acid profile of NFO1 group showed the similar trend to FO. Four non-fish meal diets were prepared for the second experiment with increased amount of feed attractant. 100FO diet was formulated similar to FO diet in the first experiment though higher amount of bonito peptide was contained. The other diets gradually employed Schizochytrium meal to substitute fish oil in 100FO diet for 35, 70 and 100%, respectively [65FO, 30FO, NFO2]. Duplicated groups of yellowtails (186.0 g) were fed the diets for 84 days. The growth result was improved by increasement of bonito peptide; however, it was inversely proportional to employment rate of algae meal. The results suggest possibility for developing non-fish meal diet for yellowtail with plant protein sources and Schizochytrium sp. by inducing enough amount of feed attractant. Moreover, it needs further study on essential fatty acid utilization for yellowtail while developing non-fish meal and non-fish oil diet with microalgae.