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Laily Fitriani Mulyani
Aquaculture Study Program, Department of Fisheries and Marine Science, Faculty of Agriculture, University of Mataram
Agriculture, Biological Sciences & Forestry

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ANALISIS LAJU PERTUMBUHAN DAN FREKUENSI MOULTING KEPITING BAKAU (Scylla serrata) DENGAN SUBSTRAT PEMELIHARAAN YANG BERBEDA Asti Amalia; Laily Fitriani Mulyani; Muhammad Marzuki
Vol 16 No 3 (2026): JURNAL PERIKANAN
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jp.v16i3.2289

Abstract

Mud crab (Scylla serrata) is a high-value fishery commodity, but the success of its culture is still influenced by growth and moulting processes. This study aimed to analyze the effects of different rearing substrates on the growth rate, moulting frequency, and moulting time of mud crab. The study was conducted at the Dakota Crab Culture Facility, Mataram City, and the Aquaculture Environment Laboratory, Aquaculture Study Program, University of Mataram. An experimental method was used with two treatments, namely P1, a beach sand substrate, and P2, a beach sand substrate with the addition of mangrove leaves. Rearing was carried out in crab boxes connected to a Recirculating Aquaculture System (RAS). The main parameters included moulting frequency, moulting time, absolute weight gain, absolute length growth, Specific Growth Rate (SGR), and Survival Rate (SR). The data were analyzed using a twosample t-test assuming unequal variances at the 5% level. The results showed that substrate differences had no significant effect on any parameter (p>0.05). Descriptively, treatment P2 produced a higher moulting frequency of 0.500±0.534 times/day than P1 at 0.375±0.517 times/day. Moulting time in P2 was also slightly faster, at 38.00±16.4 days, whereas P1 was 39.67±11.3 days. Thus, the combination of beach sand and mangrove leaves tended to be better for moulting frequency and moulting time, but the differences were not statistically significant. Keywords: Growth; Mangrove Leaves; Moulting; Moulting Time; Mud Crab; Substrate
The Effect of Giving Ketapang Leaves and Betel Leaves on the Survival Rate of Betta Fish (Betta splendens) Muhammad Rizwan Farizy; Laily Fitriani Mulyani; Damai Diniariwisan
Journal of Fish Health Vol. 6 No. 2 (2026): Journal of Fish Health
Publisher : Study Program of Aquaculture, Department of Fisheries and Marine Science, Faculty of Agriculture, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jfh.v6i2.9943

Abstract

A common problem faced by betta fish breeders during the hatchery stage is the low survival rate of fry, as they are highly susceptible to changes in water quality and disease. Therefore, fry management is necessary to increase survival rates by using natural ingredients that are environmentally friendly and do not cause resistance. Ketapang leaves (Terminalia catappa) and betel leaves (Piper betle) can be used because they contain active compounds such as flavonoids, which have antimicrobial properties that can help inhibit the growth of bacteria and fungi in the water. The aim of this study was to determine the appropriate dosage of ketapang leaves and betel leaves for the survival rate of betta fry. This study used an experimental method, namely RAL with 4 treatments and 3 replications, the treatments tested were P0 (control): no treatment, P1: 1 g/l ketapang leaves, P2: 1 g/l betel leaves, P3: 0.5 g/l ketapang leaves and 0.5 g/l betel leaves. The parameters tested included absolute weight, absolute length, specific weight growth, daily length growth and survival rate. The results showed that the average absolute weight of betta fish ranged from 0.193-0.444 g, the average absolute length ranged from 2.379-3.021 cm, the average specific growth rate ranged from 0.015-0.006%/day, the average daily growth rate ranged from 0.034-0.019%/day, and the average survival rate ranged from 60.00-13.33%.
Co-Authors Asti Amalia Damai Diniariwisan Muhammad Marzuki Muhammad Rizwan Farizy