张泽钊;周晖;施钢;陈刚;

• 1:广东海洋大学水产学院
• 2:广东省普通高校南海水产经济动物增养殖重点实验室

摘要(Abstract)：

配制全鱼粉饲料(以鱼粉为蛋白源)、10%豆粕饲料(用豆粕蛋白10%鱼粉)、20%豆粕饲料(用豆粕蛋白20%鱼粉)等3种等氮等能饲料,分别投喂体质量21.34±1.54 g的幼鱼24 d,研究饲料中豆粕蛋白含量对军曹鱼幼鱼碳、氮稳定同位素分馏的影响。结果表明,随着养殖时间的延长,各饲料组军曹鱼δ13C逐渐上升,δ15N逐渐下降,虽然δ13C和δ15N变化速度上有差异,但除20%豆粕饲料组肌肉的δ15N外,其他各饲料组肌肉和全鱼在实验结束时均已与饲料达到同位素平衡;军曹鱼肌肉和全鱼的Δ13C和Δ15N值均随饲料中豆粕蛋白含量的增加而加大,Δ13C从4.19‰增加到5.04‰,Δ15N从0.18‰增加到2.20‰;军曹鱼全鱼和肌肉的Δ13C和Δ15N相似,但在同位素值变化速度上有差异,因此,在进行生态学营养级研究(长时间尺度)时,肌肉可以代表军曹鱼的同位素特征,而在进行生理学研究(短时间尺度)时,肌肉的同位素变化则不能代表军曹鱼的同位素变化。

关键词(KeyWords)： 军曹鱼幼鱼;饲料;豆粕蛋白;碳稳定同位素;氮稳定同位素;同位素分馏

Abstract:

Keywords:

基金项目(Foundation): 广东省海洋与渔业科技项目(A2009-08D03、A2010-08D04);; 广东省科技计划项目(2009B020308005、2010B080203044,2011B020307012);; 国家海洋公益性行业科研专项(201205028);; 广东海洋大学大学生研究创新性实验项目(CXSY200802)

作者(Authors): 张泽钊;周晖;施钢;陈刚;

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