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All Journal Indonesian Journal of Tropical Aquatic
Andre Rachmat Scrabra
Department of Aquaculture, Faculty of Agriculture, University of Mataram, Indonesia.
Agriculture, Biological Sciences & Forestry

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The effect of addition of calcium oxide (CaO) on the cultivation of Litopenaeus vannamei in freshwater Husnul Ayu Juniarti; Nanda Diniarti; Andre Rachmat Scrabra
IJOTA (Indonesian Journal of Tropical Aquatic) Vol. 5 No. 1 (2022): February 2022
Publisher : Universitas Muhammadiyah Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22219/ijota.v5i1.17899

Abstract

Indonesia, as the fourth-largest global producer of Vannamei shrimp, is facing increasing demand for shrimp, necessitating higher production. In response, the cultivation of Vannamei shrimp in freshwater has gained traction. However, freshwater environments are limited in essential calcium minerals required for shrimp growth. To address this issue, research on the addition of calcium oxide (CaO) in freshwater Vannamei shrimp cultivation was conducted. The main objective of this study was to assess the impact of calcium oxide (CaO) and determine the optimal dosage for the survival rate and growth of Vannamei shrimp in freshwater. The experimental method was employed, consisting of five different dosage treatments: seawater control, freshwater control, 40 ppm, 80 ppm, and 120 ppm of calcium oxide. The findings of this study revealed that the treatment with 120 ppm of calcium oxide exhibited the most favorable growth, with a weight of 16.40 g in the freshwater treatment. Additionally, the 80 ppm treatment demonstrated the highest survival rate, reaching 67% in the freshwater treatment.
The effect of additional Silk worm (Tubifex sp.) on artificial feed on the number of larva Guppy fish (Poecilia reticulata) Ashari Kautsar; Muhammad Marzuki; Andre Rachmat Scrabra
IJOTA (Indonesian Journal of Tropical Aquatic) Vol. 5 No. 1 (2022): February 2022
Publisher : Universitas Muhammadiyah Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22219/ijota.v5i1.18828

Abstract

Aquaculture does not only cover consumption fish production, there is also ornamental fish production. Guppy fish (Poecilia reticulata) is one of the popular ornamental fish because of its many varieties and easy maintenance and cultivation.The aim of the study was to evaluate the effect of giving silk worms (Tubifex sp.) on spawning parent guppy (Poecillia reticulata) and to analyze the appropriate dose of silk worms on spawning brood guppy (Poecillia reticulate). This study used an experimental method with the addition of tropical almond leaf powder. The experimental design used was a completely randomized design (CRD) consisting of 5 treatments, namely treatment P0 (100% artificial feed/control), P1 (95% artificial feed, 5% silk worms.), P2 (90% artificial feed, silk worms). 10%), P3 (85% artificial feed, 15% silk worms), P4 (80% artificial feed, 20% silk worms) and each treatment was repeated 3 times. The results showed that the addition of silk worms (Tubifex sp.) in artificial feedsignificant effect on the parameters of absolute weight growth of broodstock, feed conversion ratio, gonadosomatic index, and the number of larvae produced. Meanwhile, the survival rate parameters for both broodstock and guppy larvae had no significant effect.The highest average value of each parameter occurred in the P4 treatment.
Co-Authors Ashari Kautsar Husnul Ayu Juniarti Muhammad Marzuki Nanda Diniarti