Soetomo Jurnal Pertanian AgroPro

POTENSI SUMBERDAYA IKAN MADIDIHANG (Thunnus albacares) YANG DIDARATKAN DI PELABUHAN PERIKANAN NUSANTARA SIBOLGA

2025-12-14T16:36:58+07:00

The development of fisheries tends to increasingly lead to use without limits, technology that is not environmentally friendly has caused the status of fisheries resources to become endangered, one of which is the yellowfin fish (Thunnus albacares). This research aims to determine the catch in Maximum Sustainable Yield (MSY), the Number of Allowable Catches (JTB) and the level of utilization of yellowfin tuna (T. albacares). The primary data used in this research comes from interviews and direct observation. Secondary data used is production data for 2016 -2023 and literature review. The analysis used in this research is the Schaefer Model Sustainable Catch Potential Analysis. The results obtained for the maximum sustainable fishing effort (F_MSY) were 1,248 trips/year, while the maximum sustainable fishing results (Y_MSY) were 2,151 tons/year. The total allowable catch (Y_JTB) is 1,075 tons/year. The results of the Schaefer model utilization rate calculation showed that the utilization rate of yellowfin tuna (T. albacares) was 166%, which was classified as Depleted or completely exploited

PENGARUH LAMA PERENDAMAN JARING INSANG DASAR (Bottom Gillnet) TERHADAP HASIL TANGKAPAN IKAN BULU AYAM (Thryssa mystax) DI PERAIRAN KENJERAN SURABAYA

2025-12-14T16:38:46+07:00

This experimental study aimed to analyze the effect of soaking time of Bottom Gillnet on the catch of featherfish (Thryssa mystax) in Kenjeran waters, Surabaya. The research was conducted in June-July 2025 using experimental method with Randomized Block Design (RBD) consisting of three soaking time treatments of 30 minutes, 60 minutes, and 90 minutes with 9 replications each. The data obtained were analyzed using Shapiro-Wilk normality test, Levene homogeneity test, One-Way ANOVA analysis, and continued with Least Significant Difference (LSD) test at 5% significance level. The results showed that the soaking time of bottom gillnet had a significant effect on featherfish catch with F calculated = 286.705 > F table = 3.40 (p < 0.05). The 60-minute soaking time produced the highest catch with a total of 17.92 kg (average 1.99 kg per replication), followed by 30 minutes with a total of 13.70 kg (average 1.52 kg per replication), and 90 minutes with a total of 12.78 kg (average 1.42 kg per replication). The LSD test confirmed that all soaking time treatments had significant differences from each other with 95% confidence interval. This study concluded that the 60-minute soaking time is the most optimal for catching featherfish in Kenjeran waters, Surabaya, thus providing practical recommendations for local fishermen to improve the efficiency and productivity of their catch.

Keywords: Bottom Gillnet, soaking time, Thryssa mystax, Kenjeran waters, catch, RBD, One-Way ANOVA.

PENGARUH JENIS UMPAN TERHADAP HASIL TANGKAPAN TUNA SIRIP KUNING (THUNNUS ALBACARES) DENGAN PANCING ULUR DI DUSUN HARUO, KABUPATEN MALUKU TENGAH

2025-12-14T16:40:14+07:00

Central Maluku Regency is one of the tuna producing areas with fishery commodities that have high economic value as export products. Tuna fishing in Central Maluku Regency, especially in Haruo Hamlet, still uses simple fishing gear, namely handlines using bait as a lure for fish to approach the hook. This research is expected to provide benefits for fishermen in Haruo Hamlet in increasing catches based on the right type of bait to use. The purpose of this study was to determine the differences in catches of yellowfin tuna (Thunnus albacares) based on the type of bait used and to find out which type of bait is the most effective. The study was conducted using the experimental fishing method with the Federer formula, the collected data were tested using the t-test. There is a significant difference between artificial flying fish bait and natural squid bait on the catch of yellowfin tuna using handlines. The use of natural squid bait was more effective than the use of artificial flying fish bait for yellowfin tuna catches using handlines, where the catch with natural squid bait was 95 yellowfin tuna, while with artificial flying fish bait, 69 yellowfin tuna were caught. The by-catch was 58 skipjack tuna.

THE EFFECT OF FEEDING DIFFERENT MOLASS CONCENTRATIONS ON THE GROWTH AND SURVIVAL RATE OF PEARL CATFISH (Clarias gariepinus)

2025-12-14T16:41:36+07:00

One of the efforts to increase catfish production in Indonesia is through intensive cultivation efforts. The development of intensive catfish cultivation processes has an impact on increasing waste in waters. One technology that can overcome the problem of aquaculture waste is biofloc. The tools and materials used in this study were aquariums, catfish measuring 7 cm, feed with a protein content of 33%, molasses, commercial probiotics containing Lactobacillus plantarum, Lactobacillus fermentum, Bacillus subtilis and Pseudomonas putida. Feeding with a dose of 5% of the total fish biomass. This study used a RAL consisting of five treatments with four replications. Treatment P0 (control) without molasses, treatment P1 giving molasses with a C/N ratio of 12, treatment P2 giving molasses with a C/N ratio of 15, treatment P3 giving molasses with a C/N ratio of 18, treatment P4 giving molasses with a C/N ratio of 21. This study used an experimental method. The data collected were absolute growth, absolute length, water quality variable measurement results, and survival rate (SR). The provision of different molasses concentrations did not significantly affect the survival rate but had a very significant effect on the growth of weight and absolute length of catfish. The provision of molasses with a C/N ratio of 18 provided the best growth, namely an average absolute weight of 11.9 grams and an increase in absolute length of 6.2 cm.

EFFECT OF ADDING PROBIOTIC DOSAGE OF EFFECTIVE MICROORGANISM 4 (EM4) TO COMMERCIAL FOOD ON GROWTH OF MUTUAL WEIGHT OF VANAME WATER (Litopanaeus vannamei) DOC 40 IN EXPERIMENTAL TANKS

2025-12-14T16:43:01+07:00

Superintensive technology vaname shrimp (Litopenaeus vannamei) farming is characterized by very high stocking densities, which can trigger appetite and water quality to decline drastically. One of the mitigation efforts against these events is to add a dose of probiotic effective microorganism 4 (EM4) to commercial feed. The purpose of this study was to determine the effect of adding a dose of probiotic effective microorganism 4 (EM4) in commercial feed on the absolute weight growth of vaname shrimp DOC 40 experimental tanks. This study used an experimental method with a completely randomized design (CRD) consisting of 5 treatments with 5 replicates. This study uses the treatment of adding doses of EM4 probiotics to commercial feed, treatment A; 75 ml/kg feed, B; 150 ml/kg feed, C; 225 ml/kg feed, D; 300 ml/kg feed, and E; 375 ml/kg feed. The test animals used 40 DOC vaname shrimp with an average weight of 5 g/head. The stocking density was 1 tail/liter and the experimental media used seawater with a volume of 3 liters/tank. The results showed that treatment C gave the highest results on absolute weight growth of 40 DOC vaname shrimp at 4.5 g/head. Water quality data obtained water temperature ranged from 278 â€“ 29,1 0C, acidity ranged from 7,55 â€“ 7,8 and dissolved oxygen ranged from 5,6 â€“ 6,1 ppm.

PENGARUH PEMBERIAN PAKAN ALAMI CACING SUTRA DENGAN DOSIS YANG BERBEDA TERHADAP PERTUMBUHAN BERAT MUTLAK BENIH IKAN KOI (Cyprinus rubrofuscus) PADA WADAH PERCOBAAN

2025-12-14T16:51:50+07:00

This study aims to determine the effect of natural feeding of silkworm (Tubifex sp) with different doses on the growth of the absolute weight of koi fish fry (Cyprinus rubrofuscus) aged 1-2 months in the experimental container, and to find out what is the best dose of natural feed of silkworm (Tubifex sp) on the absolute weight growth of koi fish fry (Cyprinus rubrofuscus) aged 1-2 months in the experimental container. This research method used a Complete Random Design (RAL) with 5 treatments and 5 replicates, The results showed that the natural feed of silkworms with different doses had a real effect on the absolute weight growth of koi fish fry aged 1-2 months, treatment C gave the highest result of 1.8 g. This study provides information on the natural feeding of silkworms with different doses on the absolute weight growth of koi fish seeds.

PENGARUH FREKUENSI PEMBERIAN PAKAN KOMERSIAL TERHADAP PERTUMBUHAN BERAT UDANG VANAME (Litopenaeus Vannamei)

2025-12-26T11:33:42+07:00

Udang vaname mempunyai ciri mencari makan pada siang dan malam hari (diurnal dan nocturnal) dan sangat rakus. Ciri-ciri tersebut perlu diketahui karena berkaitan dengan jumlah pakan dan frekuensi pemberian pakan yang akan diberikan. Pakan merupakan faktor yang sangat penting dalam budidaya udang vaname karena menyerap 60-70% dari total biaya operasional. Tujuan penelitian ini adalah untuk mengetahui pengaruh frekuensi pemberian pakan terhadap pertumbuhan udang sehingga diharapkan pertumbuhan udang dapat dioptimalkan selama budidaya dengan menggunakan metode Rancangan Acak Lengkap (RAL) 4 perlakuan dengan 6 kali ulangan. Hasil penelitian tentang pengaruh frekuensi pemberian pakan komersial terhadap pertumbuhan berat udang vaname (Litopenaeus vannamei) umur PL 8-21 pada bak percobaan diperoleh data sebagai berikut: perlakuan A = 0,035 g, perlakuan B = 0,044 g, perlakuan C = 0,048 g dan perlakuan D = 0,053 g. Berdasarkan uji ANOVA satu arah 5%, dapat dijelaskan bahwa frekuensi pemberian pakan komersial memiliki pengaruh yang berbeda nyata terhadap pertumbuhan berat udang vaname (Litopenaeus vannamei) umur PL 8-21. Lebih lanjut, uji BNT 5% menunjukkan bahwa perlakuan D memberikan hasil tertinggi terhadap pertumbuhan berat udang vaname (Litopenaeus vannamei) umur PL 8-21, yaitu sebesar 0,053 g.

Kata kunci : Udang vannamei, Frekuensi pakan, Pertumbuhan Berat Udang