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Journal : Sains Akuakultur Tropis : Indonesian Journal of Tropical Aquaculture

The Effects of Stocking Density on Growth and Survival rate of Beong (Hemibagrus nemurus) Wildah Faizati; Sri Hastuti; Ristiawan Agung Nugroho; Tristiana Yuniarti; Fajar Basuki; Dewi Nurhayati
Sains Akuakultur Tropis : Indonesian Journal of Tropical Aquaculture Vol 5, No 2 (2021): SAT edisi September
Publisher : Departemen Akuakultur FPIK UNDIP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/sat.v5i2.3561

Abstract

Beong are one of endogenous fish in Indonesia and still rely on catches from nature. The level of growth and survival rate in culture of beong is still low, so it is necessary to do cultivation efforts for conservation of beong, so that the beong can be cultivated intensively. One effort that can be do is biological manipulation in the form of stocking density. This study aims to determine the effect of shocking density on growth and survival rate and find out the best amount too. The study was conducted in April-May 2018 at UPT BBI Sawangan, Magelang, Central Java. The method used in this study was experiment method and Completely Randomized Design (CRD) for 4 treatments, 3 replicates with stocking dencities of A (10 fish/m2), B (30 fish/m2), C (50 fish/m2)and D (70 fish/m2). The results showed that different stocking densities gave a significant effect (Sig.> 0.05) on TKP, FCR, SGR and SR. This is allegedly due to feed competition, space competition and cannibalism in Beong fish. Treatment B gave the best results at TKP, FCR, SGR and SR with a value of 1.36 ± 0.01 gr / individual, 1.15 ± 0.11, 4.58 ± 0.22% / day and 83.33 ± 3,34%.
Pengaruh tepung bunga marigold (Tagetes erecta) pada pakan buatan terhadap kecerahan warna benih ikan guppy (Poecillia reticulata) Cut Qanita Hidayah; Sri Hastuti; Diana Rachmawati; Subandiyono Subandiyono; Dewi Nurhayati
Sains Akuakultur Tropis : Indonesian Journal of Tropical Aquaculture Vol 6, No 1 (2022): SAT edisi Maret
Publisher : Departemen Akuakultur FPIK UNDIP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/sat.v6i1.5644

Abstract

ABSTRAK Ikan guppy (P. reticulata) merupakan salah satu ikan hias air tawar yang banyak diminati karena variasi warna dan corak siripnya yang beragam. Warna ikan hias dipengaruhi oleh sel pigmen pada tubuh. Pigmen tersebut dihasilkan dari penambahan karotenoid pada pakan. Salah satu bahan penghasil karotenoid adalah tepung bunga marigold. Penelitian ini bertujuan untuk mengkaji pengaruh dan mengetahui dosis terbaik tepung bunga marigold dalam pakan buatan terhadap peningkatan kecerahan warna ikan guppy. Variabel yang diamati antara lain bobot mutlak, rasio konversi pakan, laju pertumbuhan spesifik dan kelulushidupan. Ikan guppy dengan bobot 0,19 ± 0,03 g diperoleh dari pembudidaya ikan hias guppy Sleman, Yogyakarta. Penelitian dilaksanakan di Galaksi Akuatik Indonesia, Semarang pada bulan Desember 2018-Januari 2019. Penelitian ini menggunakan metode eksperimen dengan rancangan acak lengkap (RAL) yang terdiri dari 4 perlakuan dan 3 kali ulangan. Perlakuan yang diterapkan adalah penambahan tepung bunga marigold dalam pakan buatan dengan dosis A (0 mg/kg), B (25 mg/kg), C (50 mg/kg) dan D (75 mg/kg). Hasil penelitian ini menunjukkan bahwa tepung bunga marigold berpengaruh nyata (P<0,05) terhadap tingkat kecerahan warna ikan guppy, namun tidak berpengaruh nyata (P>0,05) terhadap bobot mutlak, rasio konversi pakan (FCR), laju pertumbuhan spesifik (SGR) dan kelulushidupan (SR). Perlakuan C (50 mg/kg) memberikan nilai tertinggi pada peningkatan kecerahan warna ikan guppy (P. reticulata) yaitu 4,05. Kesimpulan yang diperoleh adalah dosis tepung bunga marigold 50 mg/kg memberikan hasil tertinggi pada kecerahan warna ikan guppy (P. reticulata).                                                                                                                                                                                                Kata Kunci :  Guppy; Marigold; Pakan; Kecerahan Warna. ABSTRACT    Guppy (P. reticulata) is one of the freshwater fish that has various colour with many type of fin pattern. The colour of  ornamental fish is depend of the pigment cell. This pigment is produced by the carotenoid in diet fish. One of the carotenoid producing ingredients is marigold flour. This research is used to review and find out the best dose of marigold flour in artificial feed to increase he pigmentation of guppy fish. The parameters are the absolute weight, feed conversion rasio, specific growth rate and survival rate. Guppy fish with weight 0,19 ± 0,03 g were from ornamental guppy fish farmer Sleman, Yogyakarta. The experiment was conducted at Galaksi Akuatik Indonesia, Semarang in December 2018 till January 2019. This research used an experimental method with a complete randomized design (RAL) that consisting of 4 treatments and 3 replications respectively. The treatments are the addition of marigold flour in artificial feed with dose A (0 mg/kg), B (25 mg/kg), C (50 mg/kg) and D (75 mg/kg). The results of this research are indicate that marigold flour has a significant effect on the pigmentation of guppy fish, but does not has significant affect to absolute weight, feed conversion ratio, specific growth rate and survival rate. Treatments C (50 mg/kg) gave the highest value for increasing the pigmentation of guppy fish (P. reticulata) which is 4,05. The conclusion is the dosage of marigold flour 50 mg/kg gave the highest value for pigmentation of guppy. Keywords : Guppy, Marigold, Feed, Colour Intensity