Pengaruh Berbagai Jenis Pakan Segar Terhadap Laju Pertumbuhan Dan Kelulushidupan Kepiting Bakau (Scylla Serrata) Cangkang Lunak Dengan Metode Popeye

Pemberian berbagai jenis pakan segar terhadap kepiting bakau cangkang lunak diharapkan dapat meningkatkan pertumbuhan kepiting bakau cangkang lunak. Penelitian ini bertujuan untuk mengetahui pengaruh pemberian berbagai jenis pakan segar terhadap pertumbuhan dan kelulushidupan kepiting bakau (Scylla serrata) cangkang lunak, mengetahui jenis pakan segar terbaik serta jenis pakan segar yang dapat mempercepat proses molting. Penelitian dilakukan secara eksperimental menggunakan Rancangan Acak Lengkap (RAL) dengan 3 perlakuan dan 4 kali ulangan. Perlakuan A (ikan petek), B (keong mas), C (usus ayam). Metode popeye diterapkan pada hewan uji. Bobot awal rata-rata 70,83±0,57 g/ekor. Kepiting dipelihara didalam basket berisi satu ekor kepiting. Pengamatan berakhir ketika kepiting mengalami molting. Hasil penelitian menunjukan bahwa pemberian tiga jenis pakan berbeda berpengaruh nyata (P<0,05) terhadap laju pertumbuhan relatif (RGR), efisiensi pemanfaatan pakan (EPP), protein efisiensi rasio (PER). Tetapi tidak berpengaruh nyata (P>0,05) terhadap tingkat kelulushidupan. Hasil pengukuran menunjukan bahwa kepiting yang diberi pakan B (keong mas) menghasilkan nilai paling tinggi yaitu pada nilai RGR sebesar (3.13±0,18%/hari), EPP sebesar (14,26±1,30%), PER sebesar (0.24±0,02%). Perlakuan A (Ikan petek) dan B (keong mas) lebih cepat mengalami molting, secara umum kepiting molting terjadi pada pukul 21.00–00.00 berjumlah berkisar 2 – 8 ekor/hari. Kualitas air masih dalam nilai kelayakan untuk budidaya kepiting bakau cangkang lunak. Various types of fresh feed to soft shell mud crab is expected to increase a growth of soft shell crab. The aims of this research was to determine the effect of various types fresh feed to growth and survival of soft shell crab (Scylla serrata) to determine the best types of fresh feed, and to determine the best fresh feed to moulting process. The research was done by experimental method used completely randomized design (CRD) with 3 treatments and 4 replications. Treatment A (Leiognathus splendens Cuv), B (snails), C (chicken intestines). Mangrove crab that be used popeye methode was applied in. The early weight is approximately 70.83±0.57g/for each crab. Crabs were cultured in baskets which size of 25 x 16 x 15 cm. The results showed that a giving of various types feed had a significant effect (P<0,05) to relative growth rate (RGR), efficiency of feed utilization (EPP), and protein efficiency ratio (PER), but had no significant effect (P>0,05) to survival rate. The result showed that crab which was given feed B (snail) had the highest value in RGR (3.13±0,18%/day), EPP (14.26±1,30%), and PER (0.24±0,02%). Moulting process a was faster in treatment A. Generaly the moulting time occurred at 21.00-00 o\u27clock for 2-8 crabs/day. Water quality value was capable for shoft shell mud crab culture

Produksi Dan Kualitas Rumput Laut (Eucheuma Cottonii) Dengan Kedalaman Berbeda Di Perairan Bulu Kabupaten Jepara

Rumput laut merupakan salah satu komoditas perikanan yang sangat potensial untuk dikembangkan di daerah pesisir. Dalam rangka pengembangan potensi ini diperlukan salah satu teknik budidaya yang dapat mengoptimalkan kolom perairan sehingga hasil produksi maupun kualitas rumput laut Eucheuma cottonii dapat optimal. Kedalaman yang berbeda pada rumput laut E.cottonii dapat menyerap cahaya serta unsur hara yang berbeda. Tujuan dari penelitian ini yaitu mengetahui pengaruh kedalaman yang berbeda terhadap produksi dan kualitas rumput laut Eucheuma cottonii, dan mengetahui kedalaman yang memberikan produksi dan kualitas rumput laut E.cottonii terbaik. Penelitian ini dilaksanakan pada bulan Juli – Agustus 2014. Tanaman uji yang digunakan dalam penelitian ini adalah rumput laut dari jenis Eucheuma cottonii dengan bobot awal 100 gram pada setiap perlakuan. Rancangan percobaan yang digunakan adalah rancangan acak lengkap (RAL) dengan 3 perlakuan dan 12 kali ulangan. perlakuan A (kedalaman 30 cm), B (kedalaman 60 cm), dan C (kedalaman 90 cm). Data yang dikumpulkan adalah laju pertumbuhan harian, dan kandungan karaginan rumput laut E. cottonii. Hasil penelitian menunjukkan bahwa kedalaman yang berbeda berpengaruh nyata terhadap produksi dan kualitas rumput laut E. cottonii. Perlakuan A (kedalaman 30 cm) menunjukkan pertumbuhan relatif (176,67 %), laju pertumbuhan harian (2,26 %/hari), dan kandungan karagenan (87,70%) . Sedangkan pada perlakuan B (kedalaman 60 cm) pertumbuhan relatif (157,50 %), laju pertumbuhan harian (2,10 %/hari), dan kandungan karagenan (71,20 %). Perlakuan C (kedalaman 90 cm) pertumbuhan relatif (111, 25 %), laju pertumbuhan harian (1,66 %/hari), dan kandungan karagenan (70,01 %). Kesimpulan yang didapat ialah kedalaman berbeda berpengaruh terhadap produksi dan kualitas rumput laut E. cottonii dan perlakuan A (kedalaman 30 cm) memberikan produksi serta kualitas rumput laut E.cottonii terbaik dan direkomendasikan untuk dibudidayakan. Seaweed is one of very potential comodity to be developed in coastal areas. In order to increase this potential can required cultivation techniques by optimize in water column production and quality of the seaweed Eucheuma cottonii. Seaweed E. cottonii can absorb light and different nutrient at different depth. The objective of was research were to know the effects of different depths on the production and quality of seaweed Eucheuma cottonii, and the depth that gives the best production and quality seaweed E. cottonii. The research was conducted from July to August 2014. Seaweed used in this study was the seaweed Eucheuma cottonii with initial weight of 100 g in each treatment. The experimental design used was a completely randomized design with 3 treatments and 12 replications. Treatment A (30 cm depth), treatment B (60 cm depth), and treatment C (90 cm depth). Data collected are daily growth rate and the content of carrageenan. The results showed that different depths significantly affect the production and quality of seaweed Eucheuma cottonii. Treatment A (30 cm depth) showed relative growth (176.67 %), daily growth rate (2.26%/day), and carrageenan content (87.70%). Treatment B (60 cm depth) relative growth (157.50%), daily growth rate (2.10%/day), and carrageenan content (71.20%). Treatment C (90 cm depth) relative growth (111, 25%), daily growth rate (1.66% / day), and carrageenan content (70.01%). The conclusion is a different depths significantly affect the production and quality of seaweed E. Cottonii, and treatment A (30 cm depth) provide production and the best quality of seaweed E. cottonii and recommended for cultivated

PENAMBAHAN NILAI PASCA PANEN DALAM PENGOLAHAN HASIL TAMBAK SISTEM LEISA DAN IMTA

Pelatihan pengolahan hasil budidaya panen budidaya tambak ramah lingkungan dengan penerapan System LEISA dan IMTA kepada para istri Kelompok Petambak Jaya Bakti Desa Tambakbulusan dilakukan dengan tujuan untuk membrikan nilai tambah dan  meningkatkan  kualitas produksi tambak: bandeng, udamg dan kerang darah. Kegiatan ini juga untuk mengajak serta peranan wanita para istri petambak sebagai upaya peningkatan pendapatan petani melalui peningkatan harga jual. Adapun peningkatan nilai tambah hasil panen tambak yang diberikan adalah Ebi Furai,Bandeng Cabut Duri, Bandeng Duri Lunak. Hasil pengabdian kepada masyarakat menunjukkan peningkatan hagra jual hasil tambak setelah diolah, yaitu peningkatan nilai tambah 1 kg bandeng isi 3 ekor/kg setelah menjadi bandeng tanpa duri sebesar Rp48,500,-, peningkatan nilai tambah 1 kg bandeng isi 3 ekor/kg setelah menjadi bandeng duri lunak sebesar Rp80.000,-, peningkatan nilai tambah 1 kg udang isi 90 ekor ekor/kg setelah menjadi Ebi Furai menjadi Rp140.000,-,Kata kunci: produksi tambak, nilai tambah, Badeng cabut dui, Bandeng duri lunak, ebi fura

Organic matter reduction using four densities of seaweed (Gracilaria verucosa) and green mussel (Perna viridis) to improve water quality for aquaculture in Java, Indonesia

The high organic waste content of river water in Demak, north coast of Java, has caused traditional small-scale pond farmers to stop stocking shrimp. This paper examines whether seaweed and mussel will improve the quality of water these farmers use. The effect of Gracilaria verucosa and Perna viridis on the water quality was assessed by measuring the removal rates (RRs) of total organic material (TOM), total ammonia nitrogen (TAN), nitrite, and nitrate. The specific growth rates (SGRs) of seaweed and mussel were also measured. Thirty-six semi-outdoor tanks containing 800 L of brackish water and 7 cm substrate were randomly assigned to four replications of four densities of G. verucosa: 50 (S50), 100 (S100), 150 (S150), and 200 (S200) g m−2, and of P. viridis: 60 (M60), 90 (M90), 120 (M120), and 150 (M150) g m−2. Weekly, the TOM, TAN, nitrite, and nitrate contents were measured, seaweed and mussel weighted; RRs and SGRs were calculated at the end of the study. The effect of densities on the RRs was significant for both seaweed and mussel. P. viridis was more effective in reducing TOM (by 38%) than G. verucosa (7%); G. verucosa achieved higher RRs for TAN, nitrite, and nitrate. At S200, TOM and TAN decreased by 7.4% and 67%, respectively. At M90, TOM and TAN, decreased by 38% and 49%, respectively. However, nitrite increased significantly at S200 and M150. The SGR of seaweed was significantly lower at S200 than that at S150, S100, and S50. The best performing densities were S100 and M90

Bioactive Compounds of Rambutan (Nephelium lappaceum L.)

Rambutan, a widely popular tropical fruit encompasses rich amount of bioactive compounds. All parts of this plant (leaves, bark, root, fruits, fruit skin, pulp and seeds) finds traditional usage, and are linked with high therapeutic values. Rambutan fruits parts like that of peel, pulp and seeds have been scientifically investigated in-depth and is reported to encompass high amounts of bioactive compounds (such as polyphenol, flavonoid, alkaloid, essential mineral, dietary fiber). These compounds contribute towards antioxidant, antimicrobial, anticancer, antidiabetic and anti-obesity activities. However, literature pertaining towards potential industrial applications (food, cosmetics, pharmaceutical) of rambutan fruits are limited. In the present chapter, it is intended to document some of the interesting research themes published on rambutan fruits, and identify the existing gaps to open up arena for future research work.This chapter theme is based on our ongoing project—VALORTECH, which has received funding from the European Union’s Horizon 2020 research and innovation program under grant agreement No 810630

Pengaruh Perbedaan Metode Budidaya dan Asal Bibit Terhadap Pertumbuhan Gracilaria verrucosa yang Dibudidayakan di Tambak Desa Tambakbulusan Kecamatan Sayung Kabupaten Demak

RINGKASANRumput laut (Gracilaria verrcosa) merupakan jenis yang dapat dibudidayakan di tambak, meskipun habitat awalnya berasal dari laut. Tujuan penelitian ini untuk mengetahui pengaruh metode dan lokasi asal bibit G.verrucosa. yang berbeda terhadap pertumbuhan G.verrucosa ditambak. Penelitian ini dilakukan pada bulan Agustus - November 2020 di Desa Tambakbulus Kecamatan Sayung Kabupaten Demak, Jawa Tengah. Metode yang digunakan dalam penelitian ini yaitu metode longline, broadcast, dan off- bottom. Bibit G.verrucosa berasal dari Tambak Demak, Semarang dan Brebes, 3 wilayah tersebut merupakan pusat pembudidaya yang menyediakan G.verrcosa di wilayah Jawa Tengah. Metode yang digunakan yaitu metoda eksperimental. Rancangan Percobaan yang digunakan yaitu RAL (Rancangan Acak Lengkap) 2 faktorial. 2 faktor tersebut yaitu faktor pertama: asal bibit (A): AS (Semarang); AD (Demak); AB (Brebes). Faktor kedua: metoda budidaya (L, O, B): L (longline); O (off-bottom); B (broadcast). Sehingga didapatkan 9 perlakuan: ASL, ASB, ASO, ADL, ADB, ADL, ABL, ABB, ABO, masing-masing perlakuan diulang 12 kali ulangan. Bibit G.verrucosa yang digunakan diawal pemeliharaan yaitu sebanyak 100 gram untuk masing – masing perlakuan dan pengulangan. Data yang dikumpulkan meliputi: pertumbuhan G.verrucosa selama pemeliharaan. Nilai SGR (Specific Growth Rate) dianalisis menggunakan ANOVA. Hasil penelitan menunjukkan bahwa asal bibit dan metoda budidaya yang berbeda berpengaruh nyata (P<0.05) terhadap SGR, SGR tertinggi yaitu pada perlakuan ASL (bibit Semarang, metoda longline) sebesar 1.67±0.22%/hari dan terendah yaitu pada perlakuan ABO (bibit Brebes, metoda broadcast) sebesar 0.52±0.14%/hari. Berdasarkan hasil pengukuran kualitas air yang diperoleh selama penelitian bahwa kualitas air pada lokasi penelitian masih dalam kisaran optimal untuk menunjang pertumbuhan G.verrucosa. Kualitas air DO berkisar 3.4-8.4, suhu (oC) berkisar 25-32.9, pH berkisar 7.4-8.7, salinitas (ppt) berkisar 25-32.9, nitrat (mg/l) berkisar 1.2-2.1, nitrit (mg/l) berkisar 0.01-0.016, fosfat (mg/l) berkisar 0.12-0.5, amoniak (mg/l) berkisar 0.03-0.4. Kata kunci: Gracilaria verrucosa, asal bibit, metode budidaya, SGR (Specific Growth Rate)

The impact of aquaculture field school on the shrimp and milkfish yield and income of farmers in Demak, Central Java

Traditional farmers of milkfish and shrimp use 80% of Indonesia's shrimp production area, but produce only 10% of its shrimp. A coastal protection project funded a 16-day aquaculture field school (AFS) in order to train 277 farmers in Low External Input Sustainable Aquaculture (LEISA). Its cost was 1,060 USD per farmer. In 2017 and 2018, the project monitoring database completed records of yields and practices of 125 participants and monitored finances and water quality in a 10% sample. LEISA was adopted by 85% of the 125 participants. The two annual datasets of the sample were merged and trimmed from three outliers; this was done before statistical analysis. Compared to the baseline, LEISA adopters among the 125 tripled their shrimp' yields. Within the sample, the milkfish yields of adopters and non-adopters were about identical. Sampled adopters significantly increased their gross margin by 927 USD ha−1 year−1 due to three- and fivefold yield increases for milkfish and shrimp compared to that of the baseline. The rate of return was 1.3 for the 277 participants and 1.8 for the sample, indicating a payback time of <1 year. Enriching the farmers' skills with AFS can double Indonesian milkfish production and increase its shrimp production by 25–50%