Judul: Kualitas Air dan Produksi Budidaya Ikan Nila (Oreochromis niloticus) dengan Feeding Rate Berbeda pada Sistem IMTA (Integrated Multi Trophic Aquaculture)
Abstrak: This research aims to knowing the quality of water by determinating optimal feeding rate on growth, survival, feeding efficiency, economic analysis and productivity of the Tilapia maintained by IMTA system. Tilapia fish which used in this study were about 6.68±0.63 cm length and 4.9±1.38 g weight on the average and 50 m2 stocking density. The container that used was 9 concrete pools with measurement of large 7 m2 for each pool. Intensive Tilapia farming with IMTA system had the best result in treatment by feeding 2.5% of biomass which could provide quality of water conditions in the appropriate range of water quality for cultivation such as temperature (25.2 to 31.1 ° C), pH (6.6 to 8.5) , DO (1.9 to 6.59 mg/l), ammonia (0.0003 to 0.0208 mg/l), nitrite (0.0048 to 0.179 mg/l), nitrate (0 to 0.403 mg/l) , phosphate (0.12 to 0.384 mg/l), survival rate (94.86±2.00%), the absolute length of (6.77±0.20 cm), absolute weight (35.28±1.93 g), SGR (2.96±0.07%), EP (229.65±28.39%), productivity could reach up to 14 665 g and profit up to Rp 553 360 was the best result of economic analysis and good quality of water with IMTA system could press feeding rate to 2.5%.
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Judul: Kualitas Media Budidaya dan Produksi Ikan Nilem Osteochilus hasselti yang Dipelihara pada Sistem IMTA (Integrated Multi Trophic Aquaculture) dengan Kepadatan Berbeda
Abstrak: IMTA systems is one way to manage water quality. Nilem carp is a plankton feeder who can utilize plankton from wastewater. The fish were not given an artificial feed during cultured. The aim of this research is exploring the quality of media culture changes, survival rate and growth rate of nilem carp that are cultured on an IMTA system with different densities and determine the best treatment that given the best production and economic analysis. There were 3 treatments 50/m2(A), 100/m2(B), 150/m2(C) of stocking densities, each treatment has 3 replications. Used nilem fish with lenght 5.27±0.40 cm and weight 1.59±0.38 g. The best treatment of nilem carp that cultured in IMTA systems during 72 days at 50/m2 stocking densities which has the optimum water quality. Survival rate was 90.29%, daily growth rate 1.47%, the absolute length of 2.68 cm, the absolute weight of 4.24 g, final biomass 1 845.6 g and economic return of Rp31 650.
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Judul: Pelabelan Super Vertex Magic
Abstrak: Super vertex magic labeling is labeling on graph with is a set of edges mapped into and is a set of vertices mapped into . It has a vertex magic labeling in which and represents the size and order of the graph respectively. This manuscript proves that paths, cyclics, and disjoint union of cyclics have a super vertex magic labeling. There are four theorems to be discussed. The first theorem proves that path is super vertex magic if and only if is odd and . The second theorem proves that cyclic is super vertex magic if and only if is odd. The third theorem proves that bijection function from an edge set onto of graph can be extended to a super vertex magic labeling if and only if the set amount of edge label that incidents with a vertex in the graph, consists of sequential integers as many as vertices in the graph. The fourth theorem proves that disjoint union of the cyclics consists of cyclics with each cyclic has vertices is super vertex magic if and only if and are odd.
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