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Shrimp rearing in biofloc integrated with different mullet stocking densities
Aquaculture Research ( IF 2 ) Pub Date : 2020-05-29 , DOI: 10.1111/are.14694
Esmeralda Chamorro Legarda 1 , Mateus Aranha Martins 1 , Patriula Kaliana Moreira Pereira 1 , Ramon Felipe Siqueira Carneiro 1 , Isabela Claudiana Pinheiro 1 , Walter Quadros Seiffert 1 , Claudia Machado 1 , Marco Antonio Lorenzo 1 , Felipe do Nascimento Vieira 1
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This work compared the effects of different densities of Mugil curema integrated in the rearing of Litopenaeus vannamei in a biofloc system on the yield and ecological performance of the system. For that, an experiment lasting 55 days was conducted. Four groups were evaluated as follows: (a) T0: shrimp reared without mullet, (b) T10: shrimp reared with 22 fish per tank, (c) T20: shrimp reared with 43 fish per tank, and (d) T30: shrimp reared with 65 fish per tank, each treatment with four replicates. The sludge:biomass ratio was higher in the T0 treatment, while the T10–T20 treatments were more efficient, producing more biomass and less sludge. The use of water was 17% more efficient in all treatments with mullet. Mullet survival was higher in the T10 and T20 treatments (mean: 84 ± 8%) than in the T30 (61 ± 5%) treatment. The fish final biomass and yield limits of the system were 0.37 kg and 3.7 kg/m3 respectively. Finally, there was no increase in the total nitrogen output of the system up to the T10 density. In conclusion, it is possible to integrate mullet up to 3.7 kg/m3, increasing the yield in 20% and decreasing water use.

中文翻译:

混有不同鱼放养密度的生物絮凝物中的虾养殖

这项工作比较了南美白对虾饲养中不同密度的Mugil curma的影响在生物絮凝系统中对系统的产量和生态性能的影响。为此,进行了持续55天的实验。对四组进行了如下评估:(a)T0:无shrimp鱼养殖的虾,(b)T10:每槽养22条鱼的虾,(c)T20:每槽养43条鱼的虾,和(d)T30:虾每缸饲养65条鱼,每次处理重复四次。T0处理的污泥:生物质比率更高,而T10–T20处理的效率更高,产生更多的生物质且污泥更少。在所有鱼治疗中,用水效率提高了17%。在T10和T20处理中,鱼存活率更高(平均:84±8%),而在T30处理中(61±5%)更高。该系统的鱼类最终生物量和产量极限分别为0.37 kg和3.7 kg / m 3分别。最后,直到T10密度,系统的总氮输出量都没有增加。总而言之,可以将integrate鱼的产量提高到3.7 kg / m 3,从而使产量提高20%,并减少用水量。
更新日期:2020-05-29
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