水生生物学报2017，Vol.41Issue(3)：497-505,9.DOI:10.7541/2017.64
饲料中添加磷虾水解物对大菱鲆幼鱼生长性能、体组成及相关酶活性的影响
EFFECTS OF DIETARY KRILL HYDROLYSATES ON GROWTH PERFORMANCE, BODY COMPOSITION AND RELATED ENZYME ACTIVITIES OF JUVENILE TURBOT (SCOPHTHALMUS MAXIMUS L.)
摘要
Abstract
The current study investigated the effects of dietary krill hydrolysates on growth performance, body compo-sition and related enzyme activities of juvenile turbot (Scophthalmus maximus L.) with a 10-week feeding trial using in-door flowing-through seawater system. Three isonitrogenous and isolipidic diets were formulated to contain 0 (Control), 5% (LKH), 10% (HKH) krill hydrolysates for substitution of fish meal protein in basal diet that includes 30%fish meal, respectively. The results showed that the specific growth rate (SGR), feed efficiency rate (FE), protein effi-ciency ratio (PER) and protein productive value (PPV) in HKH group were significantly higher than those in the con-trol group, but the feed intake (FI) was significantly lower than that of the control group. HKH supplementation had significantly higher whole-body moisture, whole-body crude protein contents and whole-body lipid contents than those in the control group (P<0.05). Both LKH and HKH groups significantly enhanced the muscle total amino acids con-tents and essential amino acids content compared with control group (P<0.05). Compared with the control group, both LKH and HKH significantly induced glutamic oxalacetic transaminase (GOT) activities in liver but not GOT activities in serum. HKH group showed the highest glutamic-pyruvic transaminase (GPT) activities in liver and the lowest GPT activities in serum. HKH group significantly increased amylase activity in intestines. The increasing amount of krill hy-drolysates supplied in diet first decreased and then increased trypsin activities in pyloric caecum and intestines, and HKH group had significantly higher trypsin activities in pyloric caecum and intestines than those in the control group. In conclusion, 10% krill hydrolysates supplementation in diets could promote growth performance, amino acid meta-bolism as well as digestion and absorption of juvenile turbot.关键词
磷虾水解物/大菱鲆/生长/谷丙转氨酶/谷草转氨酶/消化酶Key words
Krill hydrolysates/Turbot/Growth/Glutamic-pyruvic transaminase/Glutamic oxalacetic transaminase/Digestive enzymes分类
农业科技引用本文复制引用
张莉莉,梁萌青,徐后国,柳茜,郑珂珂..饲料中添加磷虾水解物对大菱鲆幼鱼生长性能、体组成及相关酶活性的影响[J].水生生物学报,2017,41(3):497-505,9.基金项目
公益性行业专项(201303053) （201303053）
国家自然科学基金项目(31172423)资助 Supported by the Special Fund in the Public Interest (201303053) （31172423）
the National Natural Science Foundation of China (31172423) （31172423）
