利用棉籽浓缩蛋白替代条纹锯鮨饲料鱼粉的潜力
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国家自然科学基金(31772868)


Potential of replacing fish meal with cottonseed protein concentrate in black sea bass (Centropristis striata) diet
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National Natural Science Foundation of China

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    摘要:

    通过10周生长实验评价了利用棉籽浓缩蛋白替代条纹锯鮨饲料鱼粉的潜力。采用单因素实验设计,设4个鱼粉替代水平。对照饲料(C)中鱼粉含量为35%,通过添加棉籽浓缩蛋白分别替代饲料C中鱼粉的40%(R40)、60%(R60)和80%(R80)。每个处理设3个重复。实验鱼初始体质量为 (29.5±0.5) g。实验期间,每天分2次按饱食量投喂实验饲料。结果发现,利用棉籽浓缩蛋白替代饲料鱼粉对鱼摄食、生长、饲料利用效率、鱼体组成和养殖废物(氮、磷和碳)排放量无显著影响,但单位鱼产量鱼粉消耗量(RCP)随饲料鱼粉含量下降而降低。基于生长、饲料成本、饲料利用效率、对环境的影响和RCP进行综合分析,研究表明,投喂饲料R80时的养殖效益与投喂饲料R40和R60时存在较大差异,通过添加棉籽浓缩蛋白可将条纹锯鮨饲料鱼粉含量降低至7%。

    Abstract:

    Replacement of fish meal in aquafeed has been recognized asa key to sustainable development of aquaculture industry due to the fast expansion of aquaculture industry in the last 40 years. Various plant ingredients, including cottonseed meal, were tested as fish meal substitute in fish feed, however, complete replacement of fish meal with plant ingredients in carnivorous fish feed remains a problem. Cottonseed protein concentrate (CPC) is a novel cottonseed protein ingredient with high protein content and low free gossypol, however, knowledge about CPC as a fish meal substitute in carnivorous fish feed is scarce. In this study, a 10-week feeding trial was conducted to evaluate the potential of replacing fish meal with CPC in black sea bass (Centropristis striata) diet. A single factor experiment including four fish meal levels was done. A control diet (C) was formulated to contain 35% fish meal. In the other three diets, 40% (R40), 60% (R60) and 80% (R80) of the fish meal in diet C were replaced with CPC, respectively. Each diet treatment was triplicated. Initial body weight of black sea bass was (29.5±0.5) g. During the trial, fish were fed with the test diets twice daily. The results showed that the replacement of fish meal with CPC did not significantly affect feed intake, growth, feed utilization efficiency, body composition and wastes of nitrogen, phosphorus and carbon. However, the ratio of fish meal consumption to fish production (RCP) declined with the decrease of dietary fish meal level. According to a multiple dimension analysis based on growth, feed cost, feed utilization efficiency, environment impact and RCP, the farming benefits of black sea bass fed diet R80 was different from those fed diets R40 and R60. This study reveals that fish meal content in black sea bass diet could be reduced to 7% by CPC inclusion.

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张静雅,任幸,李伟业,柳敏海,王力,王岩.利用棉籽浓缩蛋白替代条纹锯鮨饲料鱼粉的潜力[J].水产学报,2020,44(11):1873~1882

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  • 收稿日期:2019-11-06
  • 最后修改日期:2020-04-04
  • 录用日期:2020-04-24
  • 在线发布日期: 2020-11-09
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