Lama Waktu Perendaman Larva Ikan Gabus (Channa Striata) Dalam Larutan Hormon Tiroksin Untuk Meningkatkan Pertumbuhan Dan Kelangsungan Hidup

Abstract

The thyroxine has been known as a hormone that can increase fish growth especially in the larvae stage. The provision of hormone thyroxine on larvae fish can be conducted through dipping. Determination of dipping time are very important to increase growth. The purposes of this research are determining the optimum dipping time for the growth and survival rate of snakehead larvae. This research was done at Laboratorium Dasar Perikanan, Aquaculture, Faculty of Agriculture, University of Sriwijaya, Indralaya. The method used Competely Randomized Design (RAL) with five treatments and three replicates, with dipping time are 24, 27, 30, 33 and 36 hours. The parameters observed are the absolute length growth, absolute weight growth, survival rate of larvae and water quality (temperature, pH and disolved oxygen). The results showed that the duration of immersion in thyroxine hormone solution in snakehead larvae showed relatively faster growth on treatment (P5) with 36 hours of dipping time. While the regression test result showed the optimal growth of snakehead larvae at the time immersion for 27,92 – 29,49 hours. Thyroxine hormone increased the growth of snakehead larvae but has no statistically significant effect. The length of time of thyroxine hormone 24-36 hours with a dosage of 0.1 mg l-1 did not affect the survival of snakehead larvae. Water quality of maintenance media is still tolerance for supporting the growth and survival of snakehead larvae.

The Effect of Immersion Duration of java barb larvae (Barbornymus gonionotus) in the combination of thyroxine hormone and recombinant growth hormone (rGH) on the egg yolk absorption and growth

“…Thyroxine hormone which exceeds the normal necessary amount (hyperthyroidism) can inhibit growth and cause death in fish larvae. According to [21], fish larvae which are immersed too long in a thyroxine hormone solution will absorb too much hormone and this will lead to hyperthyroidism. Hyperthyroidism is a condition where the body's metabolism increases to hypermetabolic condition so that fish will usually become thin because it seems as if the fish is metabolizing its own cells resulting in abnormal conditions and causing death.…”

PENGARUH PERENDAMAN rGH TERHADAP SINTASAN DAN PERTUMBUHAN LARVA IKAN GABUS (Channa striata)

“…Usaha pengembangan teknik pembenihan ikan gabus telah dikembangkan (Muslim, 2019). Kendala yang dihadapi dalam pembenihan ikan gabus adalah tingginya kematian dan pertumbuhan yang lambat (Pasaribu et al, 2019). Maka perlu usaha dilakukan pengembangan untuk memacu pertumbuhan ikan gabus (Muslim, 2017).…”

“…Maka perlu usaha dilakukan pengembangan untuk memacu pertumbuhan ikan gabus (Muslim, 2017). Salah satu cara untuk meningkatkan pertumbuhan dan sintasan ikan gabus adalah melalui pendekatan hormonal (Pasaribu et al, 2019). Hormon rGH adalah hormon yang berperan positif dalam meningkatkan pertumbuhan ikan.…”

“…Apriliana et al (2017) mengungkapkan jika pemberian rGH mampu meningkatkan sintasan dengan meningkatkan imunitas ikan, sehingga tahan terhadap penyakit. Melalui pengaturan kinerja metabolisme dan pengaktifan sistem imun dalam tubuh, dimana metabolisme dan sistem imun tubuh akan lebih meningkat (Pasaribu et al, 2019).…”

Addition of probiotic EM-4 with different concentrations in cultivation media on the growth and survival rate of freshwater pomfret fish (Colossoma macropomum)

“…Penelitian terkait aplikasi probiotik pada media hidup ikan telah dilakukan terhadap beberapa spesies ikan budidaya dan ikan hias. Khususnya spesies ikan dengan nilai ekonomis tinggi seperti pada ikan nila (Oreochromis niloticus) (Apriyan et al 2021), ikan patin (Pangasius hypophthalmus) (Khotimah et al 2016), ikan gabus (Channa striata) (Parameswari et al 2013), ikan mas koki (Carassius auratus) (Juliyanti et al 2016). Selain itu penerapan pemberian probiotik juga dilakukan pada ikan air laut seperti ikan badut (Amphiprion percula) (Akbar et al 2013) dan ikan bawal bintang (Trachinotus blochii) (Febriany et al 2021).…”