PERFORMA IKAN Belontia hasselti DENGAN BERBAGAI DENSITAS DAN PEMBERIAN JENIS PAKAN BERBEDA PASCA TRANSPORTASI

Ferdinand Hukama Taqwa, Dade Jubaedah, Mochamad Syaifudin, Tanbiyaskur Tanbiyaskur, Gion Tanbao Suselin

Abstract


Salah satu ikan konsumsi dari perairan rawa dengan nilai ekonomis cukup tinggi dan berpotensi sebagai komoditas ikan hias ialah dari jenis Belontia hasselti. Kegiatan budidaya ikan ini belum banyak dilakukan karena masih mengandalkan hasil tangkapan dari alam, sehingga upaya domestikasi mulai dari tahapan penanganan pascatangkap, distribusi, dan pemulihan pascatransportasi perlu dilakukan. Tujuan penelitian ialah menentukan batas densitas tertinggi ikan B. hasselti selama transportasi sistem tertutup dan jenis pakan yang sesuai selama masa pemulihan pascatransportasi. Penelitian terdiri atas dua tahap dengan metode rancangan acak lengkap (RAL). Tahap pertama yaitu perbedaan densitas ikan B. hasselti selama 24 jam transportasi sistem tertutup, yaitu masing-masing sebanyak 38, 42, 46, dan 50 ekor L-1. Tahap kedua berupa pemulihan ikan selama 10 hari setelah proses transportasi dengan pemberian jenis pakan berbeda, yaitu Tubifex sp., Chironomus sp., dan pakan apung komersial dengan kadar protein 30%. Performa ikan B. hasselti yang diamati sesaat pascatransportasi dan selama masa pemulihan meliputi kelangsungan hidup (sintasan), kadar glukosa darah, tingkat konsumsi oksigen, pertumbuhan bobot mutlak, dan efisiensi pakan. Hasil pengujian menunjukkan bahwa densitas ikan B. hasselti hingga 50 ekor L-1 selama transportasi 24 jam menghasilkan sintasan 100%, namun menyebabkan peningkatan kadar glukosa yang signifikan hingga mencapai 177,67 mg dL-1. Di akhir masa pemulihan, tingkat sintasan, pertumbuhan bobot mutlak, dan efisiensi pakan ikan B. hasselti tertinggi terdapat di perlakuan dengan pemberian pakan berupa Tubifex sp. dan signifikan berbeda dengan metode pemberian pakan lainnya, yaitu berturut-turut sebesar 100%; 1,07 g; dan 23,73%. Kadar glukosa darah dan tingkat konsumsi oksigen ikan di akhir masa pemulihan tidak menunjukkan perbedaan yang signifikan antar perlakuan. Kisaran kualitas air yang terukur selama transportasi dan pemulihan masih layak untuk kehidupan ikan B. hasselti. Secara umum kepadatan ikan B. hasselti sebesar 50 ekor L-1 selama transportasi 24 jam dan proses pemulihan dengan pemberian pakan Tubifex sp. selama 10 hari menunjukkan performa budidaya yang lebih baik. Kajian mengenai sistem transportasi B. hasselti dengan kepadatan yang lebih tinggi dan durasi transportasi yang lebih lama, serta waktu pemulihan yang lebih singkat dengan pakan buatan yang sesuai masih dibutuhkan untuk pengembangan budidaya secara intensif di masa mendatang.

Belotia hasselti is a high economic value fish and has the potential as an ornamental fish commodity. The cultivation of this fish has lagged due to the supply reliance on wild stock. Therefore, domestication efforts of this fish have to be developed, starting with post-catch handling, distribution, and post-transportation recovery. The purposes of this research were to determine the best stocking density for B. hasselti during closed system transportation and the appropriate feed type during the recovery period. The research was designed in two stages using a completely randomized design. The first experiment was different B. hasselti densities used for 24 hours transportation period, i.e., 38, 42, 46, and 50 fish L-1, respectively. The second experiment was different feeding types during the recovery period of 10 days post-transportation, i.e., Tubifex sp., Chironomus sp., and commercial floating feed (protein content of 30%), respectively. The performance observations on B. hasselti were done immediately after transportation consisting of survival, blood glucose levels, oxygen consumption levels, absolute weight growth, and feed efficiency. The result showed that the density of up to 50 fish L-1 during 24 hours of road transportation resulted in 100% survival despite a significant increase in glucose levels up to 177.67 mg dL-1 was recorded. At the end of the recovery period, the highest survival rate, absolute weight growth, and feed efficiency of B. hasselti were found in the treatment with Tubifex sp. and significantly different from the other treatment using Chironomus sp. and commercial floating feed, which were 100%, 1.07 g, and 23.73%, respectively. There were no significant differences in blood glucose and oxygen consumption in the fish after the recovery period. The water quality range measured during transportation and recovery in this study was still suitable for fish survival. In general, the density of B. hasselti during 24 hours transportation is 50 L-1, and the recovery process by feeding Tubifex sp. in 10 days resulted in better cultivation performance. For the future development of intensive aquaculture, more research on B. hasselti transportation systems with higher densities, longer transport durations, and shorter recovery times using suitable artificial feeds is required.


Keywords


Belontia hasselti; densitas; pakan; pemulihan; transportasi; Belontia hasselti; density; feed; recovery; transportation

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References


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DOI: http://dx.doi.org/10.15578/jra.17.1.2022.23-33


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