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All Journal Agrikan: Jurnal Agribisnis Perikanan
Anggraini, Rr. Citra P. Kusuma
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Agriculture, Biological Sciences & Forestry Chemical Engineering, Chemistry & Bioengineering Earth & Planetary Sciences Environmental Science

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The Potential Use of Crude Glycerin as an Alternative Feed and Its Effect on the Growth of Mutiara Catfish (Clarias gariepinus) Anggraini, Rr. Citra P. Kusuma; Rochvita, Ana; Priasiwi, Wisnu; Panjaitan, Dennys
Agrikan Jurnal Agribisnis Perikanan Vol 16 No 2 (2023): Agrikan: Jurnal Agribisnis Perikanan
Publisher : Fakultas Pertanian, Universitas Muhammadiyah Maluku Utara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52046/agrikan.v16i2.1763

Abstract

Mutiara catfish, the second largest food fish in Magelang Regency, faces challenges due to high feed prices. To address this, researchers are exploring the use of crude glycerin biodiesel waste as an alternative feed. This research aims to determine the potential of crude glycerin as an alternative feed for mutiara catfish and its impact on their growth. The study involved selecting feed raw materials, formulation, manufacturing, feeding, observing fish growth, water quality, and proximate testing of test feed. The research used a randomized design with four treatments and three replications. The test feed consisted of P1 25% crude glycerin, P2 50% crude glycerin, P3 75% crude glycerin, and PK, a control in the form of pellets. Feeding was carried out twice a day using the ad satiation method. The study found that the P1 25% crude glycerin feed had the second-best results regarding 19 grams weight gain, 67.85% specific growth rate, 8 cm length growth, and 0.05 feed conversion ratio. The feed also had a 100% survival rate. The water quality was measured, with temperature and pH values ranging between 25-30℃ and 6.98-7.63. The proximate test results showed that the P1 feed had the second-best 12.70% water content, 20.51% ash content, 1.47% fat content, 15.04% protein content, and 50.28% carbohydrate content. The study concluded that the test feed effectively influences fish growth, but further research is needed to optimize feed nutrition.
Study of Reproductive Biological Aspects of Cetol Fish Poecilia reticulata was Caught in Freshwater of Magelang Regency Rochvita, Ana; Anggraini, Rr. Citra P. Kusuma; Permadi, Jefri; Hamam, Faisal Nur; Firdaus, Syafrizal Akbar
Agrikan Jurnal Agribisnis Perikanan Vol 16 No 2 (2023): Agrikan: Jurnal Agribisnis Perikanan
Publisher : Fakultas Pertanian, Universitas Muhammadiyah Maluku Utara

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

This research aims to determine aspects of cetol fish reproductive biology including sexuality, sex ratio, GSI, gonadal maturity (TKG), and fecundity, in order to obtain information as a basis for cultivation. Samples were taken in 6 waters in the Magelang Regency area, during August at 1 week intervals. The data obtained is presented in the form of tables and figures, analyzed descriptively. Water quality is classified as good, temperature range 22.5-29.8 °C, pH 6.09-6.80, and DO 7.0-15.7 mg/L. Cetol fish have sexual dimorphism and dichromatism. The male:female sex ratio is 1.1:1. Male and female fish in TKG I-VI, with a greater percentage of males and females in TKG III-VI than in TKG I-II. At a length of 1.6-2.0 cm, males have been found in TKG III-V and females in TKG III-IV, and at a length of 2.1-2.5 cm, males and females have been found in TKG III-VI. The GSI of male fish reaches 8.22% (1.2-2.5 cm) and for females it reaches 28.09% (1.1-3.8 cm). Fecundity ranges from 2-36 eggs (1.1-3.8 cm and 0.07-0.57 g). The conclusion of this research is that the sex ratio is unequal, male and female cetol fish first mature gonads at a length of 1.6-2.0 cm, and females can give birth to young at a length of 2.1-2.5 cm. August is the spawning season for cetol fish marked by high GSI and TKG advanced. Cetol fish are viviparous so fecundity is low.
Co-Authors Firdaus, Syafrizal Akbar Hamam, Faisal Nur Jefri Permadi Panjaitan, Dennys Priasiwi, Wisnu Rochvita, Ana