中国水产科学2017，Vol.24Issue(6)：1223-1233,11.DOI:10.3724/SP.J.1118.2017.17031
微藻粉替代鱼油对星斑川鲽幼鱼生长、体组成和生理指标的影响
Effects of replacing fish oil with microalgae meals on growth per-formance, tissue proximate composition, and biochemical indices in juvenile starry flounder, Platichthys stellatus
摘要
Abstract
A 90-day feeding trial was conducted to investigate the effects of fish oil substitution with microalgae meals on growth performance, tissue proximate composition, and biochemical indices in juvenile starry flounder, Platichthys stellatus (initial body weight 7.35 g±0.03 g). Four groups of isonitrogenous and isolipidic diets were formulated using different primary lipid sources: fish oil (FO), Schizochytrium meal (SO), Nannochloropsis meal (NO), and the mixture of these two algae meals (MO), with the remaining part filled with corn oil. Results showed that growth performance was not significantly different between FO and SO, whereas specific growth rate (SGR), protein efficiency ratio (PER), and viscerosomatic index (VSI) of NO and MO were significantly lower than FO (P<0.05). Feed efficiency (FE) of MO and NO was the opposite. The body crude protein content of MO was sig-nificantly higher than that in the other groups (P<0.05), while body crude lipid content of FO and MO were sig-nificantly higher than that in the other groups (P<0.05). The muscle ash content of FO was significantly lower than that in the other groups (P<0.05). Fatty acid composition of muscle and liver were directly influenced by dietary fatty acid composition (P<0.05). The percentages of C16:0 and DHA in muscle were positively correlated with that of the diets (r=0.973 and 0.967, respectively, P<0.05), and the percentages of C14:0 and C16:1n-7 were significantly positively correlated with that of the diets (r=1.00 and 0.996, respectively, P<0.01). The percentages of C18:2n-6, n-6 PUFA, and DHA:EPA in liver were also positively correlated with that of the diets (r=0.983, 0.976, and 0.977, respectively, P<0.05), while C16:1n-7 showed a significantly positive correlation (r=0.992, P<0.01). Compared with FO, levels of serum alanine aminotransferase (ALT), triglyceride (TG), cholesterol (CHO), and alkaline phos-phatase (ALP) of NO and MO were significantly decreased (P<0.05). Additionally, levels of serum aspartate ami-notransferase (AST) and glucose (GLU) of NO were significantly lower than those in other groups (P < 0.05). In summary, there were no negative effects on growth and physiology when fish oil was replaced with Schizochy-trium meal, and this can improve the nutritional value of P. stellatus to a certain extent.关键词
裂壶藻粉/微绿球藻粉/鱼油替代/星斑川鲽/生长性能/脂肪酸Key words
Schizochytrium meal/Nannochloropsis meal/fish oil replacement/Platichthys stellatus/growth per-formance/fatty acid分类
农业科技引用本文复制引用
张燕,乔洪金,李宝山,孙永智,公绪鹏,王际英,张利民..微藻粉替代鱼油对星斑川鲽幼鱼生长、体组成和生理指标的影响[J].中国水产科学,2017,24(6):1223-1233,11.基金项目
山东省科技发展计划项目(2014GHY115006) （2014GHY115006）
国家自然科学基金项目(31201973) （31201973）
国家海洋生物产业-水生动物营养与饲料研发创新示范平台项目(201702002). （201702002）
