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Heryadi Heryadi
Dinas Pertanian dan Ketahanan Pangan Kota Palembang
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Earth & Planetary Sciences Environmental Science

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Analysis of Water Quality and Plankton Biodiversity in Conservation Area of PT PHE Raja Tempira Boby Muslimin; Khusnul Khotimah; Muhammad Nizar; Helmizuryani Helmizuryani; Henri Yowono; Wahyu Pinto Neri; Indra Sundara Alhusna; Muhamamd Abdul Latif Al-Ansori; Heryadi Heryadi
Journal of Global Sustainable Agriculture Vol 4, No 2 (2024)
Publisher : Universitas Muhammadiyah Palembang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32502/jgsa.v4i2.8319

Abstract

Identification of water quality before fish farming is needed to determine the characteristics of water as a medium for freshwater fish cultivation. This study investigated water quality parameters for pH, temperature, Dissolve Oxygen (DO), Total Dissolved Solid (TDS), types and abundance of phytoplankton and zooplankton in the conservation area of PT PHE Raja Tempirai, Penukal Abab Lematang Ilir Regency (PALI), South Sumatra. Water samples were collected from four stations with codes A0, D1 and D2 in the form of earthen ponds and A1, a tributary of the Muara Air Itam river and ex-situ analyzed at laboratory of aquaculture study program, Sriwijaya University and Center for Environmental Health and Disease Control Engineering (BTKLPP) Class I Palembang. All stations have categories very suitable for DO (>6 mg/L) and temperature (29-32 °C) parameters. Station A1 is categorized as less feasible at pH and TDS (5.06±0.72 and 6.80±0.00 mg/L), stations D1 and D2 are suitable for cultivation at pH parameters (6.36±0.11 and 6.71±0.17), and less feasible at TDS (38.63±0.03 mg/L and 34.50±1.90 mg/L). While at station A0 it is very possible on all parameters, but phytoplankton of the genus Peridinium at this station dominate, so in the future, it is necessary to mitigate the abundance of this type of phytoplankton to avoid water quality degradation, especially in different seasons.
Impact of Feed Additives on the Growth of Gourami Fish Seeds (Osphronemus gourami) Meika Puspita Sari; Khusnul Khotimah; Muhammad Nizar; Elva Dwi Harmilia; Heryadi Heryadi; Ahmad Rahardjo
Journal of Global Sustainable Agriculture Vol 4, No 1 (2023)
Publisher : Universitas Muhammadiyah Palembang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32502/jgsa.v4i1.7169

Abstract

The high market demand for gourami has led to an increase in fish farming activities. However, this fish farming activity is constrained by the spawning and breeding process. Gourami fish takes quite a long time in the seed growth phase so it is feared that it can hamper the fulfillment of gourami fish stocks in the market. Several studies have been conducted to shorten the growth time of fish seeds. One of them is in the field of feed. Modification and alternative feed are expected to contribute to science in the cultivation of gourami fish seeds. The purpose of this study was to determine the effect of feeding additives to increase the growth of carp fry (Osphoronemous gouramy). The research was conducted from August to October 2019 using nets in concrete ponds.  The research was conducted experimentally using the group randomized design (RAK) method carried out in 4 treatments and 4 groups. The treatments tested were the provision of additional ingredients consisting of P_1 = 15% Probiotic / Kg feed, P_2 = 0.4% Vitamin C / Kg feed, P_3 = 3% Spirulina/kg feed, P_4 = 3.25% Papain enzyme/kg feed. Observation parameters include absolute length growth, absolute weight growth, survival, and feed conversion ratio. The results showed that 3% spirulina/kg and 3.25% papain enzyme/kg had a significant effect on the rate of weight growth and growth.
Co-Authors Ahmad Rahardjo Boby Muslimin Elva Dwi Harmilia Helmizuryani Helmizuryani Henri Yowono Indra Sundara Alhusna Khusnul Khotimah Khusnul Khotimah Meika Puspita Sari Muhamamd Abdul Latif Al-Ansori Muhammad Nizar Muhammad Nizar Wahyu Pinto Neri