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首页> 外文期刊>Journal of the World Aquaculture Society >Evaluation of experimental and practical diets for bluegill Lepomis macrochirus and hybrid bluegill L-cyanellus x L-macrochirus
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Evaluation of experimental and practical diets for bluegill Lepomis macrochirus and hybrid bluegill L-cyanellus x L-macrochirus

机译：对大blue Lepomis macrochirus和杂交大g L-cyanellus x L-Macrochirus的实验和实用饮食的评估

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Two experiments were conducted to identify appropriate experimental and practical diets for bluegill Lepomis macrochirus and hybrid bluegill L. cyanellus X L. macrochirus reared in aquaria. In the first study, four experimental diets and five commercial diets were evaluated in juvenile hybrid bluegill initially weighing 4.8 g/fish. The experimental diets contained casein (CAS), casein + gelatin (CAS/GEL), casein + L-arginine-HCl (CAS/ARG), or casein + gelatin + crystalline amino acids (CAS/AA) as sources of crude protein. The commercial diets included three diets formulated to meet the nutritional requirements of rainbow trout Oncorhynchus mykiss and two diets formulated to meet the nutritional requirements of channel catfish Ictalurus punctatus. Each diet was fed twice daily at a rate of 4% of body weight/d to triplicate groups of fish. At the end of the 8-wk feeding trial, weight gain was significantly higher in fish fed the best commercial rainbow trout diets (205-217%) compared to fish fed diets formulated for channel catfish (87-104%). Weight gain and feed efficiency (FE) of fish fed the experimental diets (53-86% and 0.19-0.32, respectively) were significantly lower than those of fish fed the commercial rainbow trout diets (143-217% and 0.49-0.64, respectively). In the second experiment, the same dietary treatments were fed for 8 wk to juvenile bluegill initially weighing 3.7 g/fish. Each diet was fed twice daily at a rate of 4% of body weight/d to triplicate groups of fish. Weight gain was significantly higher in fish fed commercial trout diets (291-402%) compared to fish fed diets formulated for channel catfish (164-191%). Weight gain and FE of fish fed CAS/ARG were significantly higher than those of fish fed the commercial catfish diets, but significantly lower than those of fish fed the best commercial trout diets. Results of this study indicate that commercial rainbow trout diets are preferable to commercial channel catfish diets for culture of bluegill and hybrid bluegill. More research is needed to identify appropriate experimental diets for this group of fishes.
机译：进行了两个实验，以鉴定在水族馆中饲养的蓝blue Lepomis macrochirus和杂种蓝L L. cyanellus X L. macrochirus的适当实验和实用饮食。在第一个研究中，在最初重达4.8 g /鱼的幼年杂交蓝blue中评估了四种实验饮食和五种商业饮食。实验饮食中含有酪蛋白（CAS），酪蛋白+明胶（CAS / GEL），酪蛋白+ L-精氨酸-HCl（CAS / ARG）或酪蛋白+明胶+结晶氨基酸（CAS / AA）作为粗蛋白的来源。商业日粮包括为满足虹鳟Onkihynchus mykiss的营养要求而配制的三种日粮和为满足槽I鱼Ictalurus punctatus的营养要求而配制的两种日粮。每种饮食每天以体重的4％/ d的速率喂食两次，重复三次。在8周饲喂试验结束时，饲喂最佳商业虹鳟鱼饲料的鱼类（205-217％）的体重增加显着高于为channel鱼配制的鱼类饲料的体重增加（87-104％）。饲喂实验日粮的鱼的增重和饲料效率（FE）（分别为53-86％和0.19-0.32）显着低于饲喂商业虹鳟鱼日粮的鱼（分别为143-217％和0.49-0.64） ）。在第二个实验中，将相同的饮食疗法喂食最初体重3.7克/鱼的幼年blue，饲养了8周。每种饮食每天以体重的4％/ d的速率喂食两次，重复三次。与用槽cat鱼配制的鱼饲料（164-191％）相比，商业鳟鱼鱼饲料的体重增加显着更高（291-402％）。饲喂CAS / ARG的鱼的体重增加和FE明显高于饲喂商业cat鱼日粮的鱼，但显着低于饲喂最佳鳟鱼日粮的鱼。这项研究的结果表明，商业养殖虹鳟鱼日粮比养殖商业channel鱼日粮更适合养殖hybrid和杂交蓝blue。需要更多的研究来确定适合这种鱼类的实验饮食。

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