Tujuan penelitian ini adalah mengetahui tingkat kematangan gonad, nilai gonadosomatik dan hepatosomatik indeks ikan sembilang di Perairan Teluk Pulau Bintan, Propinsi Kepulauan Riau. Penelitian dilaksanakan pada bulan Juli sampai dengan bulan Agustus tahun 2018. Penelitian ini menggunakan metode survei lapang di teluk pulau Bintan dengan jumlah sampel 30 ekor setiap stasiun (total jumlah ikan sebanyak 120 ekor). Parameter penelitian adalah bobot tubuh, panjang, gonadosomatik indeks, hepatosomatik indeks dan tingkat kematangan gonad. Hasil penelitian tingkat kematangan gonad, gonadosomatik, dan hepatosomatik indeks adalah teluk kampong bugis (TKG I-III, 0.21%, 1.45%), Madong (TKG 0-III, 0,75%, 1.33%), Tembeling (TKG I-III, 0,48%, 1,42%), Dompak (TKG 0-II, 0.18%, 1.08%) dan Pengujan (TKG 0-III, V, 0.38%, 1.35%)
penelitian ini menggunakan hormon rekombinan pertumbuhan (rGH) dengan dosis yang berbedapada pakan. tujuan penelitian iniadalah mengetahui dosis rGH yang terbaik untuk menurunkan rasio konversi pakan (fcr) benih ikan kerapu cantang. metode penelitianyang digunakanadalah Rancangan Acak Lengkap (RAL) dengan empat perlakuan K tanpa rGH; A pemberian RGH 5 mg/kg pakan; B 6 pemberia rGH mg/kg pakan; dan C pemberian rGH 7 mg/kg pakan dengan tiga ulangan. hasil enelitian terbaik adalah perlakuan B dengan nilai parameter penelitian sebagai berikt : bobot mutlak 31,56±4,28 g, dan rasio konversi pakan 1,27±0,16.
Gray eeltailed catfish is one of the local commodities in the Riau Islands. Domestication and aquaculture has not been done. Reproduction is one of problems in the Aquaculture effort. Gonadal maturity is stage preparation of the prospective parent for spawning process. One of efforts to gonad maturation is hormonal induction. This study purpose to determine effect of various brands hCG hormones on gonad maturity and determine the best hCG hormone brands that can accelerate the maturity of gonad fish crossing optimally. The research design was a completely randomized design with 5 treatments (hCG Polaris hormone, hCG sifation, hCG Chorullon, Oodev and NaCl solvent with 3 replications. The best hCG hormone is the hCG Polaris hormone reaching gonad maturation II. The best Treatment were the Oodev hormone treatment
Feed is still one of the problems in aquaculture because it takes about 70% of operational costs. High prices is caused by imported raw materials for feed production. One possible effort to overcome this problem is to find alternative local raw materials to replace imported fish meal. The purpose of this study was to examine the proximate content of shrimp shell wastes from processing shrimp crackers (Paneus sp.) to be used as shrimp flour. Samples were colledted three times in a month, at the beginning, middle and end of the month. The waste of the heads, shells and tails of the shrimp were turned into flour for laboratory testing through proximate analysis. The data were tabulated using the Microsoft Excel softwareand then analyzed descriptively by comparing the nutrient content of shrimp waste flour with the feed requirements of mariculture. The results showed that shrimp shell flour contained protein, fat, carbohydrates and ash content of around 27.4%, 2.07%, 14.84% and 47.27%. while the resulting randemen ranged from 81.75%. Therefore, shrimp shell flour can be used as an alternative raw material for preparing marine fish feed.
Penelitian ini bertujuan untuk mengidentifikasi jenis ektoparasit yang terdapat pada ikan bawal bintang (Trachinotus blochii) di lokasi perairan budidaya Kota Tanjungpinang serta menghitung jumlah persentase prevalensi dan intensitasnya. Penelitian ini menggunakan metode survei secara langsung dilapangan dengan pengambilan sampel terdiri dari tiga lokasi budidaya keramba jaring apung yaitu daerah Madong, Dompak, dan Kampung Kolam. Pengamatan ektoparasit dilakukan di Balai Karantina Ikan Pengendalian Mutu dan Keamanan Hasil Perikanan, Tanjungpinang. Hasil pengamatan menunjukkan terdapat tiga genus yang dominan muncul yaitu parasit Benedenia, Cirolana, dan Zeylanicobdella arugamensis. Invasi ektoparasit terbesar adalah Zeylanicobdella arugamensis dengan prevalensinya yang tergolong umum kemunculannya dengan angka persentase kemunculan sebesar 30% dan intensitas sebesar 5,67 dengan kategori sedang.
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