LucrA?ri AztiinA?ifice – Seria Zootehnie (2014), Vol. 62 :135-138
VANAME SHRIMP (Litopenaeus vannamae) JUVENILEA�GROWTH AT REDUCING FEEDING LEVEL IN THEA�BIOFLOCK CULTURE SYSTEM IN KARAWANGA�REGENCY, WEST JAVA, INDONESIA
R. Rostika1*, A. Sudaryono2
1University Padjadjaran – Indonesia
2University Diponegoro – Indonesia
The aim of the research was to observe vaname shrimp (Litopenaeus vanname) growth atA�reduced feeding level in the biofloc culture system. Feed residues and metabolites from shrimpA�farms contain toxic ammonia that can affect water quality and organism growth. However, theA�existing organisms involved in the biofloc system can change ammonia into a non-toxic nitrite.A�Biofloc can also be used as vaname shrimp feed. The research was carried out at the Brackish andA�Sea Water Aquaculture Center hatchery from April to July 2013. The research employed theA�Completely Randomized Design (CRD) design of experiment, which involved five different feedingA�level reduction treatments, each of which having a different amount of feed but the same amount ofA�biofloc. The research administered the following treatments: (A) 10% feeding level reduction, (B)A�15% feeding level reduction, (C) 20% feeding level reduction, (D) 25% feeding level reduction, andA�(E) normal feeding level (positive control). Each treatment was repeated three times. The parameterA�observed was Average Daily Gain (gram/day). Treatments A through E yielded the following resultsA�respectively: 0.13; 0.14; 0.19; 0.17 and 0.11. Statistically, the results indicated no significantA�difference. In other words, reduction of feeding level for vaname shrimp had no effect on AverageA�Daily Gain, and a 20% reduction even yielded the highest result. The water quality parametersA�observed, namely temperature, pH level, and dissolved oxygen (DO), indicated optimum figures forA�vaname shrimp rearing.
Key words: vaname shrimp, biofloc, reducted feed, ADG, water quality