四种实用日粮对红爪螯蟹幼鱼生长和存活的评价(von Martens,1868)

IF 0.8 Q4 MARINE & FRESHWATER BIOLOGY
Damian P. Rigg, R. Courtney, Jamie E, Seymour, Clive Jones
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引用次数: 0

摘要

红爪,Cherax quadravariatus(von Martens)作为一种水产养殖物种已经显示出了前景,但商业发展受到生产可变性的限制,可能是由于早期螃蟹的生存和生长较差。饮食有助于生存和生长,以前的研究已经确定了对更大红爪的需求,但对早期螃蟹的研究很少。采用四种日粮对红爪早期幼虫的存活和生长进行了评价;Frippak(商业虾日粮)、CSIRO复合日粮、血虫和生长中的卤虫。与其他两种饮食相比,血虫和卤虫在两周内使小龙虾的存活率明显更高。卤虫饮食的体重增加显著高于血虫或CSIRO饮食,但Frippak没有,Frippak与血虫和CSIRO没有差异。投喂卤虫后,生物量显著增加。Frippak和CSIRO饮食治疗中的高死亡率并不完全归因于营养缺乏,因为人造饮食的物理可及性降低,可能会减少摄入量,导致难以完成蜕皮并最终死亡。这项研究得出的结论是,卤虫和吸血虫的存活率最高,而卤虫和Frippak的体重增加率最高。存活率、体重增加和生物量的最佳组合是卤虫饮食。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Evaluation of Four Practical Diets on the Growth and Survival of Juvenile Redclaw, Cherax quadricarinatus (von Martens, 1868)
Redclaw, Cherax quadricariatus (von Martens) has shown promise as an aquaculture species but commercial development has been constrained by variability of production, perhaps due to poor survival and growth of early craylings. Diet contributes to survival and growth and previous studies have determined requirements for larger redclaw, but little research exists for the early craylings. An experiment was performed to evaluate survival and growth of early instar redclaw using four diets; Frippak (commercial shrimp diet), CSIRO compound diet, bloodworms, and on-grown Artemia. Bloodworms and Artemia produced significantly higher survival of craylings over two weeks than the two other diets. Artemia diet had a significantly higher weight increase than bloodworms or the CSIRO diet, but not Frippak, which did not differ from bloodworms or CSIRO. Biomass was significantly higher when fed Artemia. High mortality in the Frippak and CSIRO diet treatments were not wholly attributable to nutritional deficiencies as the manufactured diets became less physically accessible, potentially reducing intake, leading to difficulties completing ecdysis and eventually death. This study concluded that Artemia and bloodworms promoted highest survival, and Artemia and Frippak the highest weight gain. The best combination of survival, weight gain and biomass was with the Artemia diet.
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来源期刊
Freshwater Crayfish
Freshwater Crayfish MARINE & FRESHWATER BIOLOGY-
CiteScore
2.70
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