Hengky J. Sinjal
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Pemanfaatan ekstrak daun miana (Coleus atropurpureus L. (Bent)) untuk meningkatkan respon imun benih ikan Nila (Oreochromis niloticus) Resiska Ta'dung; Reiny A. Tumbol; Joppy D. Mudeng; Hengky J. Sinjal; Cyska Lumenta
e-Journal BUDIDAYA PERAIRAN Vol. 11 No. 2 (2023): April - Desember
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35800/bdp.v11i2.47719

Abstract

Treatment of diseases in fish farming generally uses synthetic chemicals and antibiotics, but long-term use is not recommended because of the impact on environmental pollution, antibiotic resistance (antimicrobial resistance/AMR), and residue accumulation in fish. Currently, research regarding the use of herbs as immunostimulants to control infectious diseases by increasing the immune response of fish in aquaculture is currently being carried out. One of the herbal plants that has the potential to control fish disease is the miana plant (Coleus atropurpureus L. (Bent). The aims of this research were to examine the effect of miana leaf extract in increasing the phagocytic activity of tilapia seeds and to determine the concentration of miana leaf extract that can increase phagocytic activity. The test material used was miana leaves and for the test fish were tilapia seeds weighing 3.42 – 4.10 g. The leaves were separated from the stems, washed and crushed until smooth. Furthermore, the leaves were extracted by maceration method using 70% ethanol solvent. 50 g of leaves soaked in 250 mL of each solution or with a ratio of 1:5. The extract was then concentrated using a rotary evaporator to obtain a concentrated extract of 30% of the total extract. The results showed that the addition of miana extract in fish feed had a very significant effect on the phagocytosis activity of tilapia (p<0.01). The best results were achieved in fish treated with 2% concentrated miana extract/kg of feed with phagocytosis activity reaching 64.84% compared to the control which was 51.67%. Keywords: Miana plants, immune response, maceration, Nile tilapia  
The Survival Rate and Growth of Juvenile Crayfish (Cherax quadricarinatus) With Different Types of Shelter Jimmy Mamuaya; Winda M. Mingkid; Ockstan J. Kalesaran; Hengky J. Sinjal; Reiny A. Tumbol; John L. Tombokan
Jurnal Ilmiah PLATAX Vol. 7 No. 2 (2019): ISSUE JULY - DECEMBER 2019
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35800/jip.7.2.2019.24510

Abstract

An experiment was designed to assess the relative performance of three shelter types on the survival and growth of red-claw crayfish (Cherax quadricarinatus).  A 13 days old juvenile crayfish with an average length of 10 mm were cultured in 400 ml water of glass bowl and were provided with one of 3 types of shelter over 19 days.  The various shelter types assessed were dried coconut leaves, bamboo and Hydrilla.  Juveniles in each bowl were fed with Artemia twice a day morning and in the afternoon. There was no significant effect (P>0.05) of shelter type on the survival rate; however, there was a significant effect (P<0.05) on growth with dried coconut leaves (5.33%) performing significantly better than Hydrilla (2.33%) and bamboo (2.00%).  This experiment showed that the shelter types provided had a significant effect on the growth but not in their survival.Keywords: Survival rate, Growth, juvenile Cherax quadricarinatus, ShelterABSTRAKTujuan penelitian ini adalah untuk menganalisis sintasan hidup dan  pertumbuhan  juvenil lobster air tawar (C. quadricarinatus) dengan shelter yang berbeda. Juvenil lobster yang berumur 13 hari dengan panjang rata rata 10 mm dipelihara dalam wadah toples kaca dengan diberikan ketiga perlakuan selama 19 hari.  Ketiga jenis perlakuan adalah daun kelapa kering, bambu dan Hydrilla.  Juvenil diberi pakan Artemia 2 kali sehari yaitu pada pagi dan sore hari.  Hasil penelitian menunjukkan ketiga perlakuan tidak berbeda nyata terhadap sintasan hidup (P>0.05), namun berbeda nyata (P< 0.05 ) untuk pertumbuhan dengan daun kelapa kering (5.33%), Hydrilla (2.33%) dan bambu (2%).     Penelitian ini menunjukkan bahwa jenis shelter memberikan pengaruh nyata  terhadap pertumbuhan namun tidak berbeda nyata untuk sintasan hidup.Kata kunci: Sintasan hidup, Pertumbuhan, Juvenil Cherax quadricarinatus, Shelter