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All Journal Jurnal Akuakultur Sungai dan Danau Jurnal Airaha
Dewi Wisudyanti
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Performa Sperma Ikan Nilem (Osteochillus vittatus) Pasca Penyimpanan Terhadap Persentase Fertilitas dan Daya Tetas Telur Dewi Wisudyanti; Emyliana Listiowati; Anandita Ekasanti; Dewi Nugrayani
Jurnal Airaha Vol 10 No 02: December 2021
Publisher : Politeknik Kelautan dan Perikanan Sorong, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (258.387 KB) | DOI: 10.15578/ja.v10i02.268

Abstract

The purpose of this study was to determine the effect of adding honey with different concentrations in the extender on the percentage of fertility and hatchability of nilem fish (Osteochillus vittatus) eggs fertilized by stored sperm. This study used a completely randomized design (CRD) with a factorial pattern of 2 x 4 with 4 replications. The type of extender (Factor A) consisted of egg yolk milk and coconut water, while the concentration of honey (Factor B) used was 0%, 3%, 6%, and 9%. Observations on the percentage of fertility and egg hatchability were carried out to determine the sperm performance of nilem fish. Data analysis was carried out statistically using statistical analysis of variance (ANOVA) and further tested using multiple distance tests (Duncan). Data analysis showed that there was an interaction between the two factors that gave a significant effect on the percentage of fertility and egg hatchability. The combination of milk and egg yolk extender with 6% honey concentration gave the highest yield of 61.75% for fertility and 23.08% for temporary hatchability, for the lowest percentage of fertility was 4% for coconut water without honey and the lowest percentage was for hatchability egg yolk milk extender without honey was 7.51%.
Studi Komunitas Bakteri Hidrolitik Saluran Pencernaan Ikan Nilem (Osteochilus vittatus) yang Dibudidayakan Di Kabupaten Banyumas Emyliana listiowati; Anandita Ekasanti; Dewi Nugrayani; Hamdan Syakuri; Dewi Wisudyanti; Muhammad Nurhafid; Yohanes Evander
Jurnal Akuakultur Sungai dan Danau Vol 7, No 2 (2022): Oktober
Publisher : Universitas Batangahari Jambi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33087/akuakultur.v7i2.142

Abstract

Hydrolytic bacteria are bacteria that play an important role in helping the digestive process of fish. This study aims to determine the hydrolytic activity of bacteria in the digestive tract of Nilem fish seen from amylolytic, proteolytic, lipolytic and cellulitic indices. The method used is exploratory and data analysis using parametric and non-parametric to explain the research data. Exploration carried out in this study included the total number of bacteria, proportion of hydrolytic bacteria, activity index of hydrolytic bacteria and molecular identification of bacteria with the best activity index. Fish were taken at random from fish farming ponds in Beji and Singasari with three fish each. The number of bacteria found an increasing pattern to the posterior intestine of fish from Beji and a pattern that varied between parts of the intestine of fish from Singasari. Hydrolytic bacteria were isolated from each part of the intestine from both locations which showed a decreasing pattern in each type of hydrolytic and intestinal tracts of fish from Singasari and varied patterns in the intestines of fish from Beji. The hydrolytic activity index showed a stable average value in each part of the intestine and the sampling location. Based on the best activity index, seven isolates were identified from three different genera, namely 1) Bacillus subtilis, 2) Enterobacter mori, Enterobacter cloacae, and 3) Aeromonas hydrophila (3), Aeromonas veronii. The bacteria obtained are classified as non-pathogenic bacteria that have potential in the field of aquaculture and normal pathogenic bacteria in the fish intestine
Co-Authors Dewi Nugrayani Dewi Nugrayani Ekasanti, Anandita Emyliana Listiowati, Emyliana Muhammad Nurhafid Syakuri, Hamdan Yohanes Evander