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EFEK PEMUASAAN PERIODIK DAN RESPONS PERTUMBUHAN IKAN NILA BEST (Oreochromis niloticus) HASIL SELEKSI Deni Radona; Fitriyah H. Khotimah; Irin I. Kusmini; Tri Heru Prihadi
Media Akuakultur Vol 11, No 2 (2016): (Desember, 2016)
Publisher : Pusat Riset Perikanan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (149.171 KB) | DOI: 10.15578/ma.11.2.2016.59-65

Abstract

Pertumbuhan ikan dapat dipicu dengan pemberian pakan yang baik. Untuk meningkatkan efisiensi diperlukan strategi pemberian pakan melalui pembatasan pakan atau pemuasaan secara periodik. Penelitian ini bertujuan untuk menguji efek pemuasaan secara periodik pada ikan nila BEST terhadap laju pertumbuhan dan sintasannya. Ikan nila hasil seleksi dengan kisaran panjang rata-rata 4 cm dan bobot rata-rata 3 g dipelihara pada kolam (4 m x 3 m) dengan ketinggian air 80 cm. Rancangan penelitian menggunakan rancangan acak lengkap dengan tiga perlakuan dan satu kontrol yaitu (A) ikan yang diberi pakan setiap hari, (B) ikan yang mengalami daur pembatasan pakan periodik 1/1, dipuasakan satu hari dan diberi pakan satu hari, (C) ikan yang mengalami daur pembatasan pakan periodik 3/3, dipuasakan dan diberi pakan selama tiga hari, (D) ikan non-seleksi yang diberi pakan setiap hari; setiap perlakuan diulang sebanyak tiga kali. Selama 60 hari pemeliharaan ikan diberi pakan berupa pelet (28% protein) sebanyak 3% dari bobot total ikan setiap hari. Hasil penelitian menunjukkan bahwa ikan nila BEST pada perlakuan A memiliki nilai pertumbuhan (panjang dan bobot), biomassa dan konversi pakan yang berbeda nyata (P<0,05) dengan ikan nila non-seleksi pada perlakuan D. Perlakuan B menunjukkan hasil yang tidak berbeda nyata (P>0,05) dengan perlakuan A. Efisiensi pakan pada ikan yang dipuasakan memberikan hasil yang relatif sama dan meminimalkan biaya produksi dengan menggunakan pakan relatif lebih sedikit.Fish growth can be triggered with a good feeding. To increase the efficiency, feeding strategies are needed through feed restriction or periodically fasted. This study aims to determine the effect of periodically fasted on the growth and survival rates of the selected BEST tilapia (Oreochromis niloticus). The fishes with the length and weight average of 4 cm and 3 g, respectively were reared in the pool with the size of 4 m x 3 m and the water height of 80 cm. The study used a completely random design with four treatments and three replication, namely (A) fish fed every day, (B) fish experiencing cycles of periodic feed restriction 1/1, fasted and fed one day, (C) fish experiencing cycles of periodic feed restriction 3/3, fasted and fed for three days, and (D) non-selected with fed every day (control). During the rearing period of 60 days, fish were fed with pelleted commercial diet (28% protein), 3% of total body weight of the fish per day. The results showed that the selected tilapia on the treatment A gave a significant difference (P<0.05) the growth value (length and weight), biomass and food conversion ratio (FCR) with non-selected tilapia in treatment D (control). Meanwhile, treatment B did not show any significant difference (P>0.05) on treatment A. Feed efficiency in fish fasted was obtained to have relatively similar results and minimize the production cost of by using relative less feed.
OPTIMIZING EMBRYONIC DEVELOPMENT, EGG HATCHABILITY, AND LARVAL SURVIVAL OF ASIAN SEABASS, Lates calcarifer USING PAPAYA LEAF EXTRACT (Carica papaya) TREATMENTS Teuku Fadlon Haser; Fauziah Azmi; Muh Saleh Nurdin; Suri Purnama Febri; Tri Heru Prihadi; Joel Aubin; Bahtiar Sah Putra; Riris Yuli Valentine; Deni Radona; Kurniawan Kurniawan; Muhammad Haritza Laitte
Indonesian Aquaculture Journal Vol 17, No 1 (2022): (June, 2022)
Publisher : Center for Fisheries Research, Agency for Marine and Fisheries Research and Human Resource

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15578/iaj.17.1.2022.29-36

Abstract

Embryonic development of Asian seabass, Lates calcarifer is a critical phase in the success of larval rearing production in a hatchery. Low production of larvae has been the drawback of the Asian seabass aquaculture owing to diseases and microbial infection to the eggs, causing low egg viability. This study aims to evaluate the effect of different doses of papaya leaf extracts during embryonic development to improve egg hatchability and larval survival. Six different doses of papaya leaf extracts of 2, 4, 6, 10, 20, and 25 mL were used as treatments arranged triplicates in five liter aquaria. The newly fertilized eggs (99 eggs) were immersed in each treatment for five minutes and fifteen seconds. Subsequently, the eggs were moved into 10 L incubation tanks, and samples were collected for embryogenesis observation. The hatchability of eggs was significantly different among treatments. The hatchability of larvae in group with dose of 4 mL was the best treatment (93.94 ± 0.1%) followed by 2 mL (93.88 ± 3%), and 6 mL (90.91 ± 3.0%). The different doses of papaya leaf extract significantly affected larval survival. The highest survival rate of larvae was 2 mL (93%) followed by 4 mL (90%) and 6 mL (70%). There was no significant difference in the hatching time of larvae. The fastest hatching time occurred at the dose of 6 mL about 13 hours and 30 minutes, followed by 2 mL and 4 mL treatment for about 14 hours. This study recommends that the doses of 2 mL or 4 mL of papaya leaf extracts have potential impacts on the improvement of larval rearing production for Asian seabass hatchery.