Land preparation in a traditional shrimp pond is one of the most important parts to do. Soil Redox Potential is an indispensable parameter to see the readiness of soil land or the level of fertility of cultivated land in carrying out activities. It is toxic to shrimp such as sulfide compounds (H2S), nitrites and ammonia. This research is descriptive in nature, by observing 5 traditional aquaculture ponds measuring 3500 m2, with shrimp densities of 100 individuals/m2. The use of Hydrogen Peroxide is pool 1 (0.5 ppm/m2), pool 2 (1 ppm/m2), pool 3 (1.5 ppm/m2), pool 4 (2 ppm/m2) and pool 5 as a control (0 ppm/m2). The basis for determining the use of Hydrogen Peroxide doses is from a minimum reference dose. The best results in pool 3 with a potential reduction value of 331 m/v, wherein one period the value of NH4 ranged from 0-2 ppm with ADG (Average Daily Growth) every week an average of 0.3 grams.

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Goldfish production increase in four years, specifically 66,823,000 in 2010 to 72,997,000 in 2014. The increment of goldfish production growth altogether with problems which is a discontinuity of fry stock. The solution for this problem is the purpose of this study, which is understood techniques in Goldfish (Carassius auratus) hatchery. The feed given to goldfish brood is blood worms (Chironomus sp. larvae) and pellets with a ratio of 50:50 as much as 3% of the biomass. Goldfish hatchery techniques involve broodstock cultivation, spawning techniques, larval development observation, and larval cultivation. Two kinds of Goldfish used, namely Oranda and Mutiara Goldfish. The results of Oranda goldfish spawning and Mutiara goldfish spawning consecutively are Fecundity 875 eggs, FR 94%, HR 91.83%, SR 93.04% and Fecundity 3850 eggs, FR 93.66%, HR 92.48%, and SR 91.10%. Larval development observation includes embryogenesis until post-hatched larval. Larval cultivation consists of giving various types of feeds, which are artemia nauplii (for 3-7 days old larval), Moina (for 7-14 days old larval), and blood worm or tubifex (> 14 days old larval). Fertilized goldfish eggs will develop through several phases, including zygotes, initial cleavage, blastula, gastrula, segmentation, pharyngula, egg hatching, and development of larvae after hatching.

AbstrakUdang vaname merupakan salah satu komoditas perikanan yang memiliki nilai ekonomi tinggi. Produktivitas dari komoditas ini dapat mencapai lebih dari 13.600 kg/ha dengan permintaan yang selalu meningkat di kalangan masyarakat. Praktek Kerja Lapang (PKL) ini bertujuan untuk memperoleh pengetahuan dan pengalaman mengenai teknik pembesaran udang vaname. Praktek Kerja Lapang dilaksanakan di tambak pendampingan PT Central Proteina Prima Tbk pada tanggal 20 Januari sampai 21 Februari 2017. Lokasi tambak tersebut yaitu di Desa Randutatah, Kecamatan Paiton, Probolinggo, Jawa Timur. Metode kerja yang digunakan yaitu metode deskriptif. Metode tersebut meliputi wawancara, pengamatan, dan partisipasi aktif selama proses kegiatan pembesaran udang vaname. Data yang terkumpul terdiri atas data primer dan sekunder. Data primer berupa pertumbuhan udang vaname, kualitas air, serta pemberian pakan selama proses budidaya. Sedangkan data sekunder berupa hasil studi data literatur mengenai teknis pembesaran udang vaname. Selain itu, data sekunder juga bisa diambil berdasarkan dokumen pendukung mengenai sejarah berdirinya, struktur organisasi, sarana dan prasarana budidaya. Kegiatan pembesaran udang vaname (Litopenaeus vannamei) selama pelaksanaan Praktek Kerja Lapang meliputi persiapan tambak, penebaran benur, manajemen pakan dan kualitas air, pengendalian hama dan penyakit, pemanenan, dan pemasaran. AbstractVannamei Shrimp (Litopenaeus vannamei) is one of the fisheries commodities which have a high economic value. Productivity of this commodity can reach over 13.600 kg/ha. The objective of this internship is to acquire knowledge and experience about enlargement technique of vannamei shrimp. The intersnship was held in mentoring pond of PT Central Proteina Prima Tbk on January 20 until February 21, 2017. The location of that pond was in Randutatah Village, Kecamatan Paiton, Probolinggo, Jawa Timur. The method used during the internship was the descriptive method. The descriptive method included an interview, an observation, and an active participation during the enlargement process of vannamei shrimp. The collected data from that method were the primary data and the secondary data. The primary data involved the shrimp growth, water quality, and feeding management during the aquaculture process. The secondary data involved the result of some literature studies about the technique of shrimp enlargement. The secondary data were also collected from the support document about the company history, organization structure, and facilities in shrimp aquaculture. The activity of vannamei shrimp rearing culture during the internship included covering pond preparation, shrimp stocking, feed and water quality management, pest and disease control, harvesting, and marketing aspect.