渔业现代化

渔业现代化 ›› 2023, Vol. 50 ›› Issue (3): 64-71.

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养殖密度对大黄鱼生长、血清生化、营养成分、消化酶和代谢酶活力的影响#br#

  1. (1中国水产科学研究院渔业机械仪器研究所,上海 200092；
    2农业农村部远洋渔船与装备重点实验室,上海 200092；
    3青岛海洋科学与技术试点国家实验室深蓝渔业工程联合实验室,山东 青岛 266237)
  • 出版日期:2023-06-20 发布日期:2023-06-25
  • 作者简介:余友斌(1994—)，男，研究实习员，研究方向：深远海养殖技术。E-mail: yuyoubin@ fmiri. ac. cn
  • 基金资助:
    山东省重点研发计划课题(2021SFGC0701)；青岛海洋科学与技术试点国家实验室“问海计划”(2021WHZZB1301)；中国水产科学研究院基本科研业务费资助(2021YJS005)

Effects of stocking densities on growth performance, nutrient composition, serum biochemical, digestion, and energy metabolism of large yellow croaker (Larimichthys crocea)#br#
#br#

  1. (1 Fishery Machinery and Instrument Research Institute,Chinese Academy of Fishery Science, Shanghai 200092,China;
    2 Key Laboratory of Ocean Fishing Vessel and Equipment,Ministry of Agriculture and Rural Affairs, Shanghai 200092,China;
    3 Pilot National Laboratory for Marine Science and Technology (Qingdao) for Deep Blue Fishery Engineering, Qingdao 266237,Shandong,China)

  • Online:2023-06-20 Published:2023-06-25

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摘要： 为研究工厂化流水养殖系统中不同养殖密度对大黄鱼养殖的影响，以初始体质量为 (120±5) g 的大黄鱼为试验对象，设置了低密度组 (4.92 kg/m3)、中密度组 (7.56 kg/m3) 和高密度组 (10.08 kg/m3) 3个初始密度组进行为期 150 d 的养殖生产试验，检测了试验结束时不同密度组大黄鱼的生长指标、营养成分、血清生化、消化酶和能量代谢酶活力水平。结果显示：高密度组大黄鱼终末增重率显著低于于中密度组和低密度，各密度组试验鱼的存活率和肥满度无显著差异；鱼体肌肉水分和灰分含量随着养殖密度的增加而增加，存在显著差异，粗蛋白与养殖密度呈负相关，也存在显著性差异，粗脂肪未出现显著差异；肝脏4种代谢酶的活性在试验末期，低、中密度组显著低于高密度组；随着养殖密度的增加，大黄鱼胃、肠道5种消化酶活性降低，中、高密度组与低密度组相比出现明显的差异。研究表明，高密度养殖可通过增加机体营养代谢和减弱的消化吸收能力影响能量的收支，从而对大黄鱼的生长、肌肉营养品质和生理健康水平产生不利影响。


关键词: 大黄鱼, 养殖密度, 流水养殖, 生长, 营养成分, 血清生化, 消化酶活性, 代谢酶活性

Abstract: To study the effects of different densities on the growth of large yellow croaker in flow-through systems, large yellow croaker with an initial body weight of (120±5) g was selected as the experimental object. Three density groups (low density group (4.92 kg/m3), medium density group (7.56 kg/m3), and high density group (10.08 kg/m3) were set for 150 days of production test. The growth indicators, nutrient components, serum biochemistry, digestive enzymes, and energy metabolic enzymes were observed at the end of the experiment. The results showed: the final weight gain rate of large yellow croaker in high density group was significantly lower than that in the medium density group and low density group, and there was no significant difference in the survival rate and fatness of experimental fish in each density group. Moisture and ash contents increased with the increase in culture density, and there was a significant difference. Crude protein and culture density were negatively correlated, and there was a significant difference, but there was no significant difference in crude fat. The activities of four metabolic enzymes in the liver were significantly lower in low and medium density groups than in high density groups at the end of the experiment. With the increase of culture density, the activities of five kinds of digestive enzymes in the stomach and intestine of large yellow croaker decreased, and there was no significant difference between medium and high density groups during the experiment. The results showed that high density culture in this experiment could affect the energy budget by increasing nutrient metabolism and weakening the digestion and absorption capacity of the body, thus affecting the growth, muscle nutritional quality, and physiological health level of fish.


Key words: large yellow croaker, culture density, flow-through systems, Growth, nutrient composition, serum biochemical, digestive enzyme, energy metabolism enzyme