| Autor: |
Sumitro, Afandi, Arfan, Safia, Wa Ode |
| Předmět: |
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| Zdroj: |
Journal of Aquaculture & Fish Health; Jun2022, Vol. 11 Issue 2, p163-169, 7p |
| Abstrakt: |
High floc accumulation in intensive catfish culture will increase the bacterial consumption of oxygen, causing the dissolved oxygen in the media to be relatively low and affect the fish growth. The control is to remove floc sediments regularly. However, removing a large amount of floc sediment will affect the flock's ability to control nitrogen waste in the rearing media, and the utilization of the flock as feed for fish will be minimal. This research was conducted to evaluate the level of floc volume on water quality and production performance of catfish Clarias gariepinus cultured in the biofloc system. The research design used a completely randomized design (CRD) with 4 treatments and 3 replications. The research treatments included floc volume density (FVD) at 20-40 ml/L, (FVD) 40-60 ml/L, (FVD) 60-80 ml/L and (FVD) 80-100 ml/L. The results showed that the water quality in all treatment was within the safe level for catfish. (FVD) 60-80 ml/L and 80-100 ml/L had higher survival rates of 100% (P <0.05). (FVD) 80-100 ml/L showed the lowest growth rate value compared to other treatments (P <0.05). (FVD) 60-80 ml/L could improve feed conversion ratio and increase protein retention by 59.17%, significantly different from other floc level treatments (P <0.05). Overall, the results showed that a floc volume density of 60-80 ml/L was more suitable for catfish culture in a biofloc system. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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