Bioflok di Batas Negeri

Tepuk tangan 100an orang menggema seiring dengan benih ikan lele berlarian ke dasar bak selepas ditebar oleh Dirjen Perikanan Budidaya dan Bupati Belu. Tepuk tangan yang membawa harapan besar untuk membangkitkan budidaya perikanan di perbatasan negeri, sebesar kegigihan para pembudidaya ikan di Cempaka Lalosuk untuk belajar dan bekerja memelihara ikan.

Perlu upaya ekstra dan kerja sama yang baik dengan berbagai pihak untuk mewujudkan harapan tersebut melalui kegiatan percontohan budidaya ikan lele sistem bak bulat. Dari mulai memilih calon penerima calon lokasi hingga proses adopsi teknik budidaya kepada masyarakat, termasuk, secara simbolis, melakukan penebaran pertama dan penyerahan bantuan secara resmi. Wajarlah bila semua itu dikategorikan pekerjaan yang penting dilakukan untuk memastikan harapan dapat terwujud sekaligus salah satu upaya pemerataan pembangunan.

Wajar juga, bila penebaran ikan dan penyerahan bantuan perlu untuk diselenggarakan dengan baik. Karena merupakan daerah perbatasan negeri yang relatif belum cukup familiar dengan sistem budidaya yang intensif, jadi wajar bila semangat kerja para penerima dan aparatur setempat sebanding dengan semangat tim pendamping teknis diberi penghargaan dengan kehadiran setingkat Dirjen dan Bupati.

Bagaimanapun, penebaran ikan adalah awal dari kerja sebenarnya dalam pemeliharaan ikan. Proses produksi baru mulai dan perlu kerja serius dari semua pihak untuk memastikan semua berjalan sesuai rencana. Semoga sukses

Improving biomass gain using crossbreeding of distinct farmed population of African catfish Clarias gariepinus

Improving biomass gain using crossbreeding of distinct farmed population of African catfish Clarias gariepinus

Ade Sunarma, Odang Carman, Muhammad Zairin Jr., Alimuddin

Department of Aquaculture, Faculty of Fisheries and Marine Science, Bogor Agricultural University, Dramaga Campus, Bogor 16680, West Java, Indonesia;
National Freshwater Aquaculture Center, Ministry of Marine Affairs and Fisheries, Republic of Indonesia. Jalan Selabintana 37, Sukabumi 43114, Indonesia. Corresponding author:

Abstract
African catfish, Clarias gariepinus was introduced to Indonesia, firstly in 1985 and subsequently in 2002, 2005 and 2011, both as farmed and wild population. However, limited number of early parental and uncontrolled broodstock utilization led to deterioration of production performance. One possible method that can produce immediate improvement is crossbreeding between distinct introduced populations. The present study examined the performance and heterosis of crossbreeding of farmed African catfish. Three populations (the Indonesia, Netherlands and Thailand populations) were reciprocally crossbred to form three purebred and six crossbreed populations. Body weight, survival, biomass, feed conversion and growth rate were calculated at the nursing stage (81 days after hatching) and the grow-out stage (172 days after hatching). At the grow-out stage, the Netherlands female x Thailand male (NT) population achieved the highest biomass (22.59 kg) and body weight (241.39 g) and had a higher survival rate (93.67%). The NT population obtained the highest mid-parent heterosis on survival (19.71%) and biomass (52.31%) and the highest best-parent heterosis on biomass (25.34%) at the grow-out stage. These results emphasized the preference of the crossbreeding between separated population for enhancing of the production performance. Further studies and implication of our result to Clarias production in Indonesia are proposed.

AACL Bioflux 2017 10(5):1001-1010

Nursing Stage of African Catfish Hybrid in Outdoor Plastic-Based Pond

Ade Sunarma*, Sarifin, Maskur, Abduh Nurhidajat Main Center for Freshwater Aquaculture Development, Jl. Selabintana 37 Sukabumi 43114 Indonesia email: juraganindoor@yahoo.co.id

African catfish production has been remarkable increase in Indonesia by 40 pct/year in past 5 years. In nursing stage, this production mostly conducted in plastic-based pond in a backyard hatchery system. As an effort to provide good quality of seed, crossbreed among different introduced-history of African catfish has been conducted, i.e. Sangkuriang population (SK), Thailand population (TH) and Egypt population (EG). Since first introduction to Indonesia in 1985 from Taiwan, African catfish has been improved using back-cross strategy and resulted a new variety, locally known as Sangkuriang catfish, in 2004. Others population introduced from Thailand and Egypt in 2003 and 2007, respectively.

The crossbreeding were performed by artificial breeding. Fertilized eggs was incubated in happa in flow-through water. Larvae (4 days after hatching) were transferred to nursing stages in outdoor plastic-based pond (18 m2 and 40-50 cm in depth) with stocking density 1.000 fish/m2 for 21 days. The larvae were fed with live tubificid worm at 1st week, live worm and artificial diet mix at 2nd week, and artificial diet at 3rd week. At the end of rearing, the seeds separated by length size.

Supporting to requirement broodfish for field utilization, this research conducted in outdoor plastic-based pond. SK population has adapted to the system but others kept in hatchery. However, results showed all population and hybrids can be adapted to outdoor pond. Survival rate (18-37%) tend similar to reported in other research in more controlled system (e.g. 7-40% Adamek et al., 2011). There’re no different in growth but varied in heterosis. Wachirachaikarn et al., (2009) reported negative heterosis in African catfish in Thailand. Length distribution varied among populations. In nursing stage, more uniformity in length can increase survival in further rearing due to suppress cannibalism. However, further research until fish consumable size required.

Performance of African Catfish Hybrid Reared in Outdoor Plastic based-Pond

Performance of African Catfish Hybrid Reared in Outdoor Plastic based-Pond

Asian-Pacific Aquaculture 2013 Ho Chi Minh City, Vietnam 10-13 December 2013