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标题：The digestibility of biofloc meal from African catfish culture medium as a feed raw material for Pacific white shrimp
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作者：Julie Ekasari ; Muhammad Agus Suprayudi ; Putri Elas 等
期刊名称：Jurnal Akuakultur Indonesia
印刷版ISSN：1412-5269
出版年度：2019
卷号：18
期号：1
页码：1-8
DOI：10.19027/jai.18.1.1-8
出版社：Jurnal Akuakultur Indonesia
摘要：This study was conducted to evaluate the digestibility of biofloc meal collected from catfish culture as a feed raw material for Pacific white shrimp Litopenaeus vannamei diet. A basal feed with 43% crude protein content was used as a control diet and mixed with 2% of binders and 0.5 % of Cr2O3 as a marker for digestibility. The experimental diets were made by mixing 67.5% of the basal diet with 30% of biofloc meal, 2% of binders and 0.5 % of Cr2O3. Nine units of glass tanks (90 cm×40 cm×35 cm) filled with 100 L seawater were used as the experimental culture units. White shrimp with an average body weight of 5.61 ± 0.09 g was randomly distributed to each experimental tank at a density of 20 shrimp/tank. The feed was offered at a level of 5% shrimp biomass per day at a frequency of four times a day. The results showed that the dry matter digestibility of feed with 30% biofloc meal in shrimp were similar to that of the reference diet. However, protein and fat digestibility of feed containing biofloc meal were considerably higher than those of the reference diet. Feeding shrimp with 30% biofloc meal diet resulted in higher survival and specific growth rate and lower feed conversion ratio than those of the control. The digestibility of bioflocs dry matter, protein and lipid in Pacific white shrimp obtained in this study were 54.9%, 76.3% and 79.3%, respectively.
关键词：biofloc; digestibility; catfish; shrimp
其他关键词：biofloc; digestibility; catfish; shrimp