The purpose of this study was to evaluate the effect of local raw materials feed and fermented feed on the growth of giant prawns. This study was conducted using a completely randomized design (CRD) consisting of 3 treatments with 3 replications, each treatment was (A) commercial feed as a control; (B) feed based on local raw materials and (C) feed based on fermented local raw materials. The study was conducted at Sukawening Village, Dramaga District, Bogor Regency. The giant prawn that used has an initial weight of 0.31±0.005 g with stocking density of 50 fish/m2. The container used was a tarpaulin pond measuring 2x3x0.5m2. The study was conducted for 53 days. Observation variables include growth parameters, feed conversion, protein and fat retention, body amino acids and digestive tract enzyme activity. The results showed that feed based on local raw materials was able to produce relative growth (620±10.43%), specific growth rate (3.80±0.28%/day), protein retention (43.26%) and fat retention (36.1%) higher than other treatments and gave the lowest feed conversion value (1.07) compared to commercial feed and feed based on fermented local raw materials. These results indicate that feed based on local raw materials potential to be applied to giant prawn culture.

Permethrin insecticide is commonly used in the worldwide due to the best effectivity in pest control and easier to degrade in the field. However, the implementation in the field of this insecticide is high will cause environmental pollution. It has been reported that aquatic environment at Singkarak lake containing permethrin. The aims of this experiment is to determine of lethal toxicity (LC50) of permethrin insecticide and its physiological effect on common carp and nile tilapia fish. The test fish was common carp and nile tilapia. Insecticide formula with permethrin active agent as a material test was used. Static toxicity method in the laboratorium was performed. Parameters in this experiment observed such as LC50, blood glucose, and histopathological of gill and liver tissues. The result showed that the permethrin insecticide had a high toxic to common carp and nile tilapia with the LC50-96h values were 0.49 dan 0.52 mg/L, respectively. The blood glucose of common carps was ranging from 29.7±0.6–118.3±0.7 mg/DL where the nile tilapia was ranging from 27.7±0.9 – 58.7±1.5 mg/DL. The blood glucose would be increased with increasing the permethrin concentration. The histopathological of gills and liver tissues both of common carp and nile tilapia were hyperplasia and necrosis.

Molluscicide of fentin acetate (C20H18O2Sn) is commonly used at the present due to effective in terms to control of molluscs in the rice field. The aims of this experiment is to determine toxicity effect of fentin acetate on growth, productivity, and blood glucose on the common carp, Cyprinus carpio cultured at rice field water. A 12 of rice field plots with size of 25m2 each were used. The stocking density of common carp was 25 fish/m2 for each rice plot. The culture period of the common carp was 21 days. The different fentin acetate concentration as treatments were as followed M0) without molluscicide; M1) 0.375 g/L of molluscicide; M2) 0.75 g/L of molluscicide); and M3) 1.5 g/L of molluscicide. Statistical analysis using one-way ANOVA with three replicates for each treatment was performed. The result showed that the treatment of molluscicide at 0.75 g/L was significantly different to the others on survival rate and productivity (p<0.05). Application of 0.75 g/L of molluscicide showed a positive correlation on blood glucose value.

Fentin acetate is used as a pesticide in rice fields to eradicate pests. Research with physiological factors approach is expected to increase the survival rate and growth performances of tilapia. The purpose of this study was to determine the impact of different concentrations of fentin acetate on the biological performance and hematological characteristics of tilapia (Oreochromis niloticus). The research used 16 rice fields with a 30 m2 each (6 x 5 m). The research design used a completely randomized design with four treatments and three replications: A. 0.00 g L−1, B. 0.375 g L−1, C. 0.75 g L−1 and D. 1.5 g L−1. The results showed that treatment C resulted in the best growth of tilapia. It was noted that absolute weight gain, daily growth rate and productivity were significantly different (P<0.05) with treatments A, B and D. The highest value in treatment C were 20.53 g (absolute weight gain), 5.43 (daily growth rate) and 501.58 g (productivity). The survival rate in treatments B and C were not significantly different (P>0.05) as well as treatments A and D. The concentration of molluscicide fentin acetate at a dose of 0.75 g/L affected the decrease in the hematological characteristics of tilapia.