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Do You Know Your Microalgae? Trends in Micro Diets for Fish Larvae Essential Nutrients and Their Crucial Effects on Reproductiv

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Do You Know Your Microalgae? Trends in Micro Diets for Fish Larvae Essential Nutrients and Their Crucial Effects on Reproductiv Vol 6 Issue 2 2018 Hatcheryfeed Advances in feeding early life stage and broodstock aquatic species Do you know your microalgae? Trends in micro diets for fish larvae Essential nutrients and their crucial effects on reproductive performance of fish broodstock Effects of enriched and non-enriched Artemia on jaw malformation in golden pompano larvae Enrichment strategies in the early larval rearing of marine fish become a long-term investment for farmers in grow-out 2 3 VOL 6 ISSUE 2 2018 Contents • News Review Replacing live feeds with formulated feed or minced fish improves survival of mud crab megalopae - New salmon hatchery for Marine Harvest in Scotland - BioMar increases fry and RAS feed capacity at mill 5 in Denmark - Scientists make major breakthrough in omega-3 12 production - Breeding for faster-growing bluegills and yellow perch - INVE launches Natura diet range for early-stage marine fish larvae • Trends in micro diets for fish larvae 12 • Do you know your microalgae? 17 • Essential nutrients and their crucial effects on 20 17 reproductive performance of fish broodstock • Enrichment strategies in the early larval rearing of marine fish become a long-term investment 26 for farmers in grow-out • Effects of enriched and non-enriched Artemia on 30 20 jaw malformation in golden pompano larvae • New research developments in aquatic animal 36 larval feeding and nutrition—recent literature • Calendar of events 38 26 * Cover : Valentin Thépot, James Cook University, Australia. 4 VOL 6 ISSUE 2 2018 We are grateful to the following companies for sponsoring this issue of the magazine. Their support allows us to make our publications available without charge. We thank them for partnering with us to support the development of our industry through education and information. Index to advertisers Aliga 21 Aquaculture without Frontiers 4 Aquafeed.com 40 Aquafeed Workshop Mexico 29 Frozen Ocean 16 INVE Aquaculture 2 Lallemand Animal Nutrition 27 Megasupply 11 Reed Mariculture 7 Skretting 10 CONTACT US SUBSCRIBE Sparos 9 Editorial: Digital editions are free to industry. [email protected] You may also purchase print copies. Advertising: [email protected] SUBSCRIBE Technical feed consulting: [email protected] Hatcheryfeed magazine DOWNLOAD YOUR COPY is published by Hatcheryfeed, a division of Aquafeed.com LLC. Aquafeed.com, LLC., Kailua, Hawaii 96734, USA. www.aquafeed.com. ©2018 all rights reserved. Copyright & Disclaimer. www.hatcheryfeed.com. 5 NEWS REVIEW Replacing live feeds with formulated feed or minced fish improves survival of mud crab megalopae Mud crab farming has long been established in the Philippines. Scylla serrata, S. tranquebarica and S. olivacea are the common species found in the Philippines; S. serrata is the preferred species for farming by crab growers. According to Southeast Asian Fisheries Development Center (SEAFDEC), in 2015 the total production of mud crab from aquaculture was estimated at 13,720 tons, valued at US$77,025,000 and 14,437 tons valued at US$86,511,000 in 2009 and 2010, respectively. Some 13 mud crab hatcheries have been established in the Philippines, nine of which are in the private The use of antibiotics as treatment percent. sector, two are government owned for Vibrio spp. has been shown to The improvement was realized and a further two are at state improve larval survival. However, under a project entitled universities and colleges. A the use of antibiotics can lead to “Improvement of Larval Rearing prototype commercial-scale the development of resistant Protocol,” which is implemented by hatchery produces about 40,000 strains of bacteria and abnormali- the Aquaculture Department, crab instars per run. However, ties that become apparent at the Southeast Asian Fisheries Develop- more hatcheries are needed since juvenile stage. ment Center (SEAFDEC/AQD). farms still depend on diminishing By replacing rotifers and artemia in wild seed stock and are experienc- The project is part of the National the diet with formulated feed or ing low survival rate during the Mud Crab Science and Technology minced fish or mussel, the survival megalopae stage due to Molt (S&T) Program, which is being rate of mud crab from zoea to Death Syndrome (MDS), a disease monitored by the Philippine megalopae has significantly due to luminescent bacteria (Vibrio Council for Agriculture, Aquatic and improved from 3.75 percent to spp.) in which zoea 5 has difficulty Natural Resources Research and 22.5 percent, while the survival molting to megalopa and diseases Development of DOST (DOST- rate from zoea to crab instar has due to bacterial and fungal PCAARRD). improved from 1.0-3.5 percent to 6 infection in eggs and larvae. 6 BioMar increases fry and RAS feed capacity at mill in Denmark BioMar Group is increasing capacity future demands from the custom- recognized for its products as well at its feedmill in Denmark with the ers.” as expertise within this segment. addition of a new production line. BioMar states that the new line The new line is expected to be The new line will be highly enables a significant step forward ready in Q2 2019 with a budget of specialized and dedicated to fry in developing RAS feed with even DKK 90 million (approx. and RAS feed production, enabling higher growth performance and US$14,420,927). The feedmill in the factory to increase flexibility, physical as well as nutritional Denmark will, after the capacity quality and production perfor- quality. expansion, be able to deliver mance. 150.000 tons of feed per year. It is “We are already recognized in the “BioMar has experienced a solid BioMar’s largest production unit in market for the high quality and growth in market share on our core Europe outside the salmon performance of our fry and RAS markets in Europe and the factory markets. The factory is designed feed from the factory in Denmark in Brande has through the last for agility with a flexible production and the factory is often delivering years been expanding capacity by set-up. It delivers mainly feed for feed to support other business removing bottle necks and species such trout, eel, sturgeon units,” added Diaz. “This is simply a optimizing operational processes,” and salmon in RAS; however, in step making sure we stay in front, explained Carlos Diaz, CEO BioMar total the factory produces feed for delivering a market leading Group. “We foresee that the more than 40 species. customer value proposition in growth will continue and we need terms of agility, quality and The factory has been a pioneer to take a significant leap forward to performance.” within RAS feed and is highly make sure we can deliver on the 7 New salmon hatchery for Marine Harvest in Scotland Marine Harvest opened a new Ben Hadfield, Managing hatchery June 1, 2018, which Director of Marine Harvest will grow up to 12 million fish (Scotland) Ltd, said: “This new a year and help meet the hatchery is a much needed global demand for Scottish facility which will allow us to farmed salmon. The new supply our expanding network £26.5 million hatchery at of sea farms across the Inchmore in Glenmoriston western Highlands and Islands replaces a much smaller and meet the increasing hatchery which had been on demand for Scottish salmon the site more than 38 years, technically advanced water from across the world”. expanding the workforce from 5 to recirculation systems in the world, The new hatchery is the latest 18. which cuts down the amount of stage in Marine Harvest’s water required while ensuring the The hatchery team will grow expansion plans which includes the water quality, the new facility is salmon from eyed eggs into smolts, creation of new open sea fish farms almost identical to the Lochailort fry and parr which will then be in various locations in the Minch. hatchery opened by Marine transferred to the company’s 49 Farms have already opened off Harvest in 2013. It will allow seawater fish farms and 5 Barra, Uist and Muck with a new Marine Harvest to stock all their freshwater loch sites to be grown site off the Isle of Rum receiving Scottish farms with fish they have into mature fish. planning permission earlier this grown themselves from eggs. year. Featuring one of the most 8 Scientists make major breakthrough in omega-3 production A major discovery that could after receiving a fellowship from surprising to us to see just how revolutionize the understanding of the Marine Alliance for Science and widespread these genes were, omega-3 production in the ocean Technology Scotland (MASTS). particularly in animals that are so has been made by an international common and abundant in the sea. Dr. Kabeya said: “Since inverte- team of scientists. brates represent a major compo- “It is also intriguing that these Led by the University of Stirling, nent of the biomass in aquatic genes seem to be jumping between Scotland, research has found for ecosystems such as coral reefs, very different organisms, such as the first time that omega-3 fatty abyssal plains and hydrothermal from plants or fungi into an insect acids can be created by many vents, their contribution to the and a spring-tail, by a process of invertebrates inhabiting marine overall omega-3 production is likely horizontal gene transfer. This has ecosystems, including corals, to be remarkable.” been a controversial idea, that worms and molluscs. genes can move around in this way, The research also involved Stirling’s but our data looks rather convinc- The breakthrough challenges the Professor Douglas Tocher, and ing that these genes have done this generally held principle that marine members of an international in at least some of these species." microbes, such as microalgae and consortium of scientists, including bacteria, are responsible for Dr.
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