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中国农学通报 ›› 2021, Vol. 37 ›› Issue (24): 159-164.doi: 10.11924/j.issn.1000-6850.casb2020-0444

所属专题: 水产渔业

• 水产·渔业 • 上一篇    

基于室内循环水系统的大口黑鲈3个品系养殖性能评估

周凡(), 彭建, 陈刘浦, 朱凝瑜, 姚高华, 贝亦江, 马文君, 丁雪燕()   

  1. 浙江省水产技术推广总站,杭州 310023
  • 收稿日期:2020-09-10 修回日期:2020-12-31 出版日期:2021-08-25 发布日期:2021-08-27
  • 通讯作者: 丁雪燕
  • 作者简介:周凡,男,1984年出生,浙江龙泉人,高级工程师,博士,研究方向:水产养殖与饲料营养。通信地址:310023 浙江省杭州市余杭区五常街道荆长路,浙江省水产技术推广总站,Tel:0571-87967376,E-mail: zhoufan0302@126.com
  • 基金资助:
    浙江省科技厅重点科技研发项目“基于物联网人工智能管控的大口黑鲈设施养殖模式构建与示范”(2019C02060);国家特色淡水鱼产业技术体系(CARS-46);浙江省水产新品种选育重大专项“加州鲈优质、抗病新品种培育与示范”;浙江省农业重大技术协同推广计划项目“大口黑鲈产业关键技术集成研究与示范”(2020XTTGSC01)

The Evaluation of Growth Performance of Three Largemouth Bass Strains Based on Indoor Recirculating Aquaculture System

Zhou Fan(), Peng Jian, Chen Liupu, Zhu Ningyu, Yao Gaohua, Bei Yijiang, Ma Wenjun, Ding Xueyan()   

  1. Zhejiang Fisheries Technical Extension Center, Hangzhou 310023
  • Received:2020-09-10 Revised:2020-12-31 Online:2021-08-25 Published:2021-08-27
  • Contact: Ding Xueyan

摘要:

在室内循环水系统开展大口黑鲈(Micropterus salmoides)3个品系养殖生长对比试验。大口黑鲈‘优鲈1号’、‘优鲈3号’、‘浙鲈2号’随机分配到9个养殖缸中,每组设3个重复,每个缸中30尾鱼(初始均重6.08±0.12g),养殖8周。试验鱼存活率高于98.89%(P>0.05),体生长‘优鲈3号’>‘优鲈1号’>‘浙鲈2号’,但无显著差异(P>0.05);‘浙鲈2号’的体长变异系数和体重变异系数最小(P>0.05)。各品系形态学指标无显著差异(P>0.05)。饲料系数和蛋白质效率最高值分别出现在‘浙鲈2号’和‘优鲈3号’(P<0.05)。肌肉常规营养组成和氨基酸组成均无显著差异(P>0.05)。‘浙鲈2号’的肠蛋白酶和肝脏蛋白酶活性最低(P<0.05)。各品系血清中10项生化指标均无显著差异(P>0.05)。本试验表明大口黑鲈‘优鲈3号’生长性能相对较好;‘浙鲈2号’在体增长、营养组成和血清生理指标等方面的表现和优鲈系列相近,显示出良好的育种潜力。

关键词: 大口黑鲈, 品系, 生长, 饲料利用, 营养组成, 消化酶活性, 血清指标, 循环水系统

Abstract:

The present trial was conducted to evaluate the growth performance of three largemouth bass Micropterus salmoides strains based on indoor recirculating aquaculture system. M. salmoides juveniles of the three stains, including ‘Youlu No.1’, ‘Youlu No.3’ and ‘Zhelu No.2’ were assigned randomly into 9 tanks with triplicate tanks for each stain respectively. Each tank had 30 fish (initial body weight 6.08±0.12g) and the feeding trial lasted 8 weeks. The results showed that the survival rate was all above 98.89% (P>0.05); the body weight gain ranked as ‘Youlu No.3’>‘Youlu No.1’>‘Zhelu No.2’ without significant differences (P>0.05); while the lowest variable coefficients of body length and weight were both observed in ‘Zhelu No.2’(P>0.05). The morphological indices among the three strains showed no significant differences (P>0.05). The higher feed coefficient rate and protein efficiency ratio were found in ‘Zhelu No.2’ and ‘Youlu No.3’, respectively (P<0.05). There was no significant difference of dorsal muscle composition and amino acids’ content among the three stains (P>0.05). The activities of trypsin in gut and liver were significantly lower in ‘Zhelu No.2’ than those in other stains (P<0.05). Ten parameters contents in serum maintained stability and no statistic difference existed among the three stains (P>0.05). The data generated from the current trial suggest that M. salmoides is an appropriate fish species for indoor recirculating aquaculture, and ‘Youlu No.3’ shows relative better growth performance in the present system. ‘Zhelu No.2’ also shows very considerable body weight gain, nutrient composition as well as resistance when compared with ‘Youlu’ stains, providing good potential as a breeding population.

Key words: Micropterus salmoides, strains, growth, feed utilization, nutrient composition, digestive enzyme activities, serum parameters, recirculating aquaculture system

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