周晖,陈刚,纪多亮,王赛,张健东

• 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)：

以全鱼粉饲料做对照(D1),用豆粕替代10%、20%鱼粉(D2、D3),玉米蛋白替代10%鱼粉(D4),啤酒酵母替代10%鱼粉(D5),配制5组等氮等能饲料,进行56 d的养殖实验,研究3种替代蛋白源对褐点石斑鱼幼鱼(23.18±1.58g)生长性能、体成分及能量收支的影响。结果表明,实验条件下5组实验鱼的末体质量、增重率、特定生长率、肝体系数、脏体系数、肥满度和蛋白表观消化率差异不显著(p值>0.05)。饲料转化效率、蛋白质效率、干物质和能量表观消化率差异显著(p值<0.05),D2组最好而D5组最差。5组实验鱼全鱼和肌肉成分中粗蛋白含量无显著差异,全鱼水分含量也无显著差异(p值>0.05),其他指标则有显著差异(p值<0.05)。5组实验鱼的排泄能及呼吸能无显著差异(p值>0.05),摄食能、生长能和排粪能有显著差异(p值<0.05),D1、D2和D3组能量分配较好,而D4和D5组较差。与全鱼粉饲料相比,豆粕替代10%鱼粉显著提高了幼鱼的饲料转化效率和蛋白质效率,而豆粕替代20%鱼粉亦未对幼鱼产生不良影响,豆粕为褐点石斑鱼幼鱼饲料中鱼粉蛋白较好的替代品。

关键词(KeyWords)： 褐点石斑鱼幼鱼;豆粕;玉米蛋白;啤酒酵母;替代鱼粉;生长;体成分;能量收支

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);; 海洋公益性行业科研专项(201205028)

作者(Author): 周晖,陈刚,纪多亮,王赛,张健东

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