宋明江 陈叶雨 赖见生 龚全 吴晓雲 刘亚 李鹏程 杨焕超 李飞扬 肖宇 孙甲华

摘要 [目的]研究似鲇高原鳅在循环水系统中的最适养殖密度，为人工繁殖似鲇高原鳅的规模化养殖提供参考数据。[方法]似鲇高原鳅初始体重为（88±5）g/尾，养殖密度为1.27、2.54、3.81、5.08、6.35、7.62和8.89 kg/m2，研究不同养殖密度对似鲇高原鳅特定生长率、增重率、饵料系数、存活率、脏体比和肝体比等指标的影响。[结果]养殖鱼类群体体长和体重等指标出现分化，养殖密度与肝体比和脏体比呈负相关，循环水养殖适宜密度为6.35 kg/m2。[结论]不同养殖密度差异体现在肝体比和脏体比方面，从成本和效率出发，综合增重率、饵料系数等生长指标，推荐养殖密度为6.35 kg/m2，养殖上市前应该进行适当肥育，以增加经济效益。

关键词 似鲇高原鳅;养殖密度;生长指标

中图分类号 S966文献标识码 A文章编号 0517-6611（2021）10-0086-03

doi：10.3969/j.issn.0517-6611.2021.10.023

开放科学（资源服务）标识码（OSID）：

Influences of Culture Density on the Growth of Triplophysa siluroides

SONG Ming-jiang， CHEN Ye-yu， LAI Jian-sheng et al

（Institute of Fisheries， Sichuan Academy of Agricultural Sciences， Chengdu，Sichuan 611731）

Abstract [Objective]

To provide basic reference data for thelarge-scale breeding of T. siluroides，the optimal breeding density of Triplophysa siluroides in the circulating water system was conducted.[Method] With the average body weight of （88±5） g， different culture density（1.27， 2.54， 3.81， 5.08， 6.35， 7.62 and 8.89 kg/m2） were set， the influences of different culture density on the specific growth rate， weight gain rate， feed coefficient， survival rate， the ratio of viscera weight to body weight， ratio of liver weight to body weight of T. siluroides were studied. [Result] The body length and body weight ofcultured fish population were differentiated， and the culture density was negatively correlated with the ratio of liver weight to body weight and the ratio of viscera weight to body weight， the appropriate density of circulating aquaculture was 6.35 kg/m2. [Conclusion] The difference of different culture densities were reflected in the ratio of viscera weight to body weight and ratio of liver weight to body weight. From the perspective of cost and efficiency， considering the weight gain ratio，feed coefficient and other growth indices， the recommended culture density was 6.35 kg/m2. T. siluroides should be fattened before marketing so as to increase the economic benefits.

Key words Triplophysa siluroides;Culture density;Growth indices

鰍类被称作“水中人参”，因具有较高的营养价值而深受消费者的喜爱。似鲇高原鳅（Triplophysa siluroides）也称拟鲇高原鳅，隶属鲤形目（Cypriniformes）鳅科（Cobitidate）条鳅亚科（Nemachilinae）高原鳅属（Triplophysa），是条鳅亚科中个体最大的个体，生长缓慢[1]。目前似鲇高原鳅自然种群数量不多，原大量分布的河段已难捕获，已被列入《四川省新增重点保护野生动物名单》和《中国濒危动物红皮书》中的易危物种，从生物多样性保护角度看，加强似鲇高原鳅的研究意义重大。从经济鱼类的开发利用角度看，似鲇高原鳅个体较大，营养丰富，味道鲜美，可供食用，深受消费者喜爱，具有较高的经济开发价值。……