动物营养学报 >

2014 , Vol. 26 >Issue 8: 2379 - 2385

DOI: https://doi.org/10.3969/j.issn.1006-267x.2014.08.045

研究简报 Short Communications

许氏平鲉幼鱼适宜投喂频率的研究

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  • 1. 山东省淡水渔业研究院, 济南 250013;
    2. 四川农业大学, 雅安 625014
冒树泉（1985-），男，江苏如皋人，助理研究员，硕士，主要从事水产动物营养研究。E-mail：maoshuquan@hotmail.com

收稿日期: 2014-02-28

  网络出版日期: 2014-08-13

基金资助

国家海洋局海洋公益性行业科研专项“海水鱼低碳高效养殖关键技术集成与示范”（201205025）

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Optimal Feeding Frequency for Sebastes schlegeli Juveniles

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  • 1. Shandong Freshwater Fisheries Research Institute, Jinan 250013, China;
    2. Sichuan Agricultural University, Ya'an 625014, China

Received date: 2014-02-28

  Online published: 2014-08-13

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摘要

本试验通过研究投喂频率对许氏平鲉幼鱼生长、饲料利用、营养成分及消化酶活性的影响，以确定其适宜投喂频率。选取平均体重为（5.63±0.17）g的许氏平鲉300尾，随机分为5组，每组3个重复，每个重复20尾鱼。5组试验鱼以不同的投喂频率（分别为1 d 4次、1 d 3次、1 d 2次、2 d 3次和1 d 1次）投喂，试验期为60 d。结果表明：随着投喂频率的增加，许氏平鲉的增重率、摄食率、特定生长率与饲料系数均呈升高趋势，1 d 2~4次组间特定生长率与饲料系数无显著差异（P>0.05），但均显著高于2 d 3次和1 d 1次组（P<0.05）。1 d 4次组幼鱼的肝体指数、脏体指数均显著小于1 d 1次组（P<0.05）。1 d 1次组鱼体水分含量显著高于1 d 2~4次组（P<0.05），1 d 1次组鱼体粗脂肪含量显著低于2 d 3次和1 d 2~4次组（P<0.05），1 d 4次组鱼体粗蛋白质和粗灰分含量显著低于1 d 1次组（P<0.05）。1 d 1次组肝脏中水分含量显著低于1 d 3~4次组（P<0.05），2 d 3次和1 d 1次组肝脏中粗脂肪含量显著高于1 d 4次组（P<0.05）。1 d 1次组胃蛋白酶、淀粉酶和脂肪酶活性显著高于1 d 2~4次组（P<0.05），投喂频率超过1 d 2次后，消化酶活性并未随投喂频率的增加而产生显著变化（P>0.05）。综合考虑生长性能、饲料利用、营养成分与消化酶活性，许氏平鲉幼鱼的适宜投喂频率为1 d 2次。

关键词： 许氏平鲉; 幼鱼; 投喂频率; 生长; 体成分; 消化酶

本文引用格式

冒树泉, 邹明妤, 王春生, 宋理平, 王秉利, 许鹏 . 许氏平鲉幼鱼适宜投喂频率的研究[J]. 动物营养学报, 2014 , 26(8) : 2379 -2385 . DOI: 10.3969/j.issn.1006-267x.2014.08.045

Abstract

In order to determine the optimal feeding frequency for Sebastes schlegeli juveniles, the effects of feeding frequency on growth, feed utilization, nutrient components and digestive enzyme activities of Sebastes schlegeli juveniles were studied. Three hundred Sebastes schlegeli juveniles with an average body weight of (5.63±0.17) g were randomly divided into 5 groups with 3 replicates per group and 20 fish per replicate. The fish in the 5 groups had different feeding frequencies which were four meals per day, three meals per day, two meals per day, three meals per two days and one meal per day. The experiment lasted for 60 days. The results showed as follows: with feeding frequency increasing, the weight gain rate, feed intake rate, specific growth rate and feed conversion ratio of juveniles all showed an increasing trend, and the specific growth rate and feed conversion ratio in two to four meals per day groups were not significantly different (P>0.05), but were significant higher than those in three meals per two days and one meal per day groups (P<0.05). The hepatosomatic index and viscerosomatic index in four meals per day group were significantly lower than those in one meal per day group (P<0.05). The moisture content of fish body in one meal per day group was significantly higher than that in two to four meals per day groups (P<0.05), while the crude lipid content in one meal per day group was significantly lower than that in three meals per two days and two to four meals per day groups (P<0.05), and the contents of crude protein and ash of whole fish in four meals per day group were significantly lower than those in one meal per day group (P<0.05). The moisture content of liver in one meal per day group was significantly lower than that in three to four meals per day groups (P<0.05), while the crude lipid content in three meals per two days and one meal per day groups was significantly higher than that in four meals per day group (P<0.05). The activities of pepsin, amylase and lipase in one meal per day group were significantly higher than those in two to four meals per day groups (P<0.05), while the digestive enzymes activities had no significant changes with feeding frequency increasing when feeding frequency was more than two meals per day (P>0.05). Base on a comprehensive consideration of growth performance, feed utilization, nutrient components and digestive enzyme activities, the optimal feeding frequency for Sebastes schlegeli juveniles is two meals per day.

Key words： Sebastes schlegeli; juvenile feeding; frequency; growth; body composition; digestive enzyme

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