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Agusnimar Agusnimar
Universitas Islam Riau
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemistry Earth & Planetary Sciences Economics, Econometrics & Finance Environmental Science Immunology & microbiology

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Pengaruh perbedaan konsentrasi olahan air lindi terhadap kelimpahan Chlorella sp Rosyadi Rosyadi; Agusnimar Agusnimar; Hisra Melati
Dinamika Lingkungan Indonesia Vol 9, No 1 (2022)
Publisher : Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (258.429 KB) | DOI: 10.31258/dli.9.1.p.32-38

Abstract

Leachate, as liquid waste is rich in nutrients, can be used as organic material for the microalgae culture such as Chlorella sp. This study aims to determine the effect of different concentrations to of leachate on the abundance of Chlorella sp populations. The observation was conducted at the laboratory of Microalgae, Agriculture faculty, Islamic University of Riau. The method used in this study was an experimental method using a randomized design; one factor, namely the different concentrations of leachate with five levels, were  5%, 10%, 15%, 20%, and 25%/l of water and three replications. The testing organism in this study was phytoplankton Chlorella sp. The culture container used was a gallon with 20 L of capacity and a water volume of 16 L. The measured parameters were cell abundance, specific growth rate, and water quality. The obtained results showed that the highest abundance of Chlorella sp at a concentration of 25% at 7,322,222 cells/ml, and the peak on day 16, the lowest concentration of 5%, was 2,580,556 cells/ml. On the sixth day, the highest specific growth rate was at a concentration 5% at 0.195/day, and the lowest was 20% at 0.077/day. 
PENGARUH PERBEDAAN RENTANG WAKTU PERENDAMAN LARVA DALAM LARUTAN PROBITIK TERHADAP KELULUSHIDUPAN DAN PERTUMBUHAN IKAN SELAIS (Kryptopterus lais) Haprizal Efendi; Agusnimar Agusnimar; Edi Warman
DINAMIKA PERTANIAN Vol. 32 No. 2 (2016): Jurnal Dinamika Pertanian Edisi Agustus 2016
Publisher : UIR Press

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Abstract

This research was conducted in order to determine the effect of interval time of submersion of larvae in solution of probiotics on the survival and growth of Kryptopterus lais. The experiment design used was completely randomized design, consisted four treatments and three replications i.e. without submersion of larvae in probiotic’s solution (P1); submersion of larvae in probiotic’s solution with interval one times in 2 days (P2); submersion of larvae in probiotic’s solution with interval one times in 4 days; submersion of larvae in probiotic’s solution with interval one times in 6 days (P3). The results showed that the treatment of P3 provided the best survival rate (91.33%), absolute body weight (0.60g) and absolute body length (5.6 cm). The interval time of submersion of fish larvae in probiotic’s solution had not significant difference on survival rate and growth rate of K.lais larvae (P>0,05).
PENGARUH PERBEDAAN PENINGKATAN PERSENTASE PEMBERIAN CACING SUTERA MENURUT UMUR LARVA TERHADAP KELANGSUNGAN HIDUP DAN PERTUMBUHAN LARVA IKAN BAUNG (Hemibagrus nemurus) Ahmad Syafitra; Agusnimar Agusnimar; Rosyadi Rosyadi
DINAMIKA PERTANIAN Vol. 34 No. 1 (2018): Jurnal Dinamika Pertanian Edisi April 2018
Publisher : UIR Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25299/dp.2018.vol34(1).4085

Abstract

This research aims to know the effect of the difference in percentage increase of silkworm by larvae age on the survival and growth of larvae (Hemibagrus nemurus). The method used is experimental method using Completely Random Design (RAL) with 4 treatments and 3 replications namely, P1 (Improvement Percentage 3%, 5% and 7%), P2 (3%, 6% and 9% Percentage increase), P3 (3%, 7% and 11%) P4 (3%, 8% and 13% ). The test fish used were bamboo larvae that were 7 days old with an average weight of 0.0004 gr and an average length of 0.8 cm. Larva fish obtained from the spawning in the Seed Fish Hall (BBI) Faculty of Agriculture, Islamic University of Riau Pekanbaru. The container used is 10 liters or 12 liters water capacity. The result of the research showed the best survival percentage was on P4 treatment, which is 96,00%, followed by P3 treatment that is 94,67%, P2 treatment is 90,67% and lowest is P1, that is 86,67 %. The absolute weight growth and the highest absolute length were at treatment (P4) with weighing 0.30 gr and length 3.35 cm, followed by treatment (P3) that is 0.32 gr and length 3.02 cm, (P2) weighing 0.31 gr and length of 2.84 cm, (P1) weighing 0.30 gr and length 2.77 cm. The highest growth rate of daily weight was also found in treatment (P4), ie 11%, (P3) 10,46%, (P2) 10,24%, and the lowest in treatment (P1) 10,12%.
Co-Authors Ahmad Syafitra Edi Warman Haprizal Efendi Hisra Melati Rosyadi