Aquaculture Scoop is a magazine for aquaculture professionals worldwide
Sea lice control Nucleotide supplementation Shrimp farming & processing Netting for aquaculture
Issue 18 / June 2018
Industry Events
Editorial
Issue 18 / June 2018 Sea lice control Benefits of ultrasonic treatment
Welcome to the latest issue of Aquaculture Scoop. In this issue we find out how nucleotides in fish diets can improve disease resistance and get an insight into bioremediation and its benefits for sustainable shrimp farming. We also learn about the new technology for shrimp processing which helps achieve the highest possible yield and learn about the use of ultrasonic treatment for controlling sea lice. As ever, please send us your comments and articles for inclusion, contact details below and right.
Nucleotide supplementation Improving disease resistance in fish
Shrimp farming and processing Latest developments and technology
Netting for aquaculture Specialist insight
Events
The world’s top events related to aquaculture from around the world, listed on p.16
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Aquaculture Scoop / June Issue 2018
Page 1
Nucleotides in fish diets Evaluation of a dietary nucleotide on the control of experimental challenge of Atlantic salmon (Salmo salar) with the pathogen Piscirickettsia salmonis By João Fernando Albers Koch, Biorigin´s Technical Specialist -Aquaculture www.biorigin.net
In intensive production systems, fish are continuously challenged
included in the diets are mostly directed to tissues that do not
with several stressors, such as high stocking density, handling, social
perform de novo nucleotide synthesis, such as intestinal and
interactions, among others. Stress causes several physiological
immune cells (Gil, 2002).Moreover, under stressful conditions, such
changes predisposing fish to disease. One the most common and
as during infections or fast growth and development, endogenous
devastating diseases in salmon farming is piscirickettiosis. Since the
nucleotide may become limiting, and their supplementation in the
first reports of piscirickettsiosis in Chile by the end of the 1980s,
diet has been shown to improve both human and animal health and
Piscirickettsia-like bacteria have been frequently detected in several
performance (Li et al., 2005).
fish species farmed both in fresh and sea water, affecting the productivity of aquaculture worldwide (Mauel & Miller 2002).
The supplementation of nucleotides in the diet not only of fish, but
Piscirickettsiosis is currently one of the most significant threats to
of other livestock species, aims at improving their health status and
the sustainability of the Chilean salmon industry. In particular, its
resistance to viral and bacterial infections, as well as reducing
increasing virulence and clinical and pathological severity, as well as
ectoparasite infestations (Burrells et al., 2001). There are several
its variable presentation in fish of the same species and age and
literature reports of studies evaluating the effectiveness of
cultivated under similar management conditions have been
nucleotide-enriched fish diets that obtained excellent results, such
observed at every new outbreak of the disease.
as reduction of adverse effects of management and environmental stress, as well as boosting of both the innate and adaptive immune
Pisciricketsiosisis difficult to control and to treat because the
systems, increasing disease resistance (Li et al., 2004; Barros et al.,
available commercial vaccines and antibiotics have not shown
2015; Hossain et al., 2016). These researchers evaluated different
sufficient effectiveness. In addition, due to the potential residues of
species of fish and obtained positive effects with the use of
antibiotics in animal products and in the environment and the
exogenous nucleotides on the immune parameters lysozyme
emergence of antibiotic resistance inboth human and animal
activity, phagocytosis index, serum complement, among others.
pathogens, the prophylactic use of antibiotics has been avoided and even banned in some countries. Therefore, research on additives
Taking those findings into consideration, a trial was conducted to
that may aid to control of this important bacteriosis in global
evaluate the effects of a dietary nucleotide derived from yeast
aquaculture is needed.
(Saccharomyces cerevisiae) extracton the mortality of Atlantic salmon inoculated with Piscirickettsia salmonis. Fish (~60 grams) were
Nucleotides can be used as tools to improve the natural defenses of
acclimatized to the experimental conditions for 18 days before the
animals. Nucleotides are the building blocks of deoxyribonucleic
experimental diets started to be fed. Smoltification was induced by
acid (DNA) and ribonucleic acid (RNA) and, according to their
changing light, temperature, and salinity conditions. The fish were
chemical structure, are divided into two main groups, purines and
fed diet containing nucleotide for 50 days (20 days of feeding period
pyrimidines (Fijolek, 2008). It should be mentioned that nucleotides
and 30 days after pathogen inoculation). Fish were distributed into
can be synthesized naturally by the body, which are called
the following experimental groups (Figure 1):
endogenous nucleotides, but only in some tissues, in particular the
• Negative control (D1): fish challenged with P. salmonis and fed a
liver, by de novo synthesis. However, the exogenous nucleotides
basal diet with no experimental product.
Page 2
Aquaculture Scoop / June Issue 2018
Figure 1. Experimental schedule
• Nucleotide diet (D2): fish were challenged with P. salmonis and fed
It should be noted that before the fish arrived, the Experimental
a diet supplemented with Biotide Extra® (Biorigin, Brazil), containing
Center was determined as free from infectious pancreatic necrosis
26.6% nucleotides.
virus (IPNV), piscine reovirus (PRV), flavobacteriosis, bacterial kidney disease (BKD), infectious salmon anemia virus (ISAV) and salmon
Both D1 and D2 groups were intraperitoneally challenged with 0.2
rickettsial septicemia (SRS) by a diagnostic laboratory using qPCR. As
mL of an inoculum of P. salmonis. Mortality was recorded for 30 days
the trial was conducted during the smoltification stage, ten gill
after the challenge, during which the fish continued to be fed the
samples of the control and nucleotide-fed fish were collected on
experimental diets. Prior to the experimental challenge, a LD50
days 4, 11 and 18 to analyze Na, K-ATPase to determine their
challenge assay was performed in order to estimate the
smoltification status.
concentration of P. salmonis inoculum that would kill ~50 % of the
Results
fish. Five concentrations (10-0,5, 10-1, 10-1,5, 10-2, 10-3) of the inoculum were injected in 40 fish per concentration, and 40 fish
The aggressiveness of the P. salmonis was higher than expected,
(control group) were injected with L-15 Leibovitz medium.
causing 80% cumulative mortality in the control group (Figure 2). The control diet fed was a typical diet currently used in the Chilean
However, the results clearly showed that the dietary inclusion of
salmon industry and formulated to meet all known requirements of
nucleotides (Diet 2) enhanced the protection of Atlantic salmon from
Atlantic salmon (Salmo salar). Both experimental diets were
P. salmonis, significantly increasing their survival rate (P<0.05).
formulated to be iso-nitrogenous and iso-energetic. Pellet size (2-4 mm) was according to fish size. The control diet was fed to both
Other authors have evaluated the use of nucleotides and fish
groups during acclimatization period and the control group during
survival after inoculation with pathogens. For instance, Shiau et al.
the entire trial. Fish were fed until apparent satiation. Total daily
(2015) obtained higher survival of tilapia fed exogenous sources of
allowance was divided in two meals: 60% in the morning and 40% in
nucleotides after inoculation with Streptococcus iniae. Those authors
the afternoon.
attribute this result to the increase in O2- production ratio in the
Table 2. Cumulative mortality rate (30 days after inoculation) of salmon fed diets containing or not nucleotides for 20 days before P. salmonis inoculation
Diet 1 (Control)
2 (Nucleo�de supplementa�on1)
Replicate
N. of fish (ini�al)
Mortality (%)
1
40
72,5
2
40
80
3
40
87,5
1
40
55
2
40
82,5
3
40
57,5
Average mortality (%) 80
65*
Biotide Extra® (Inclusion of 1.2g product per kg of diet or 320 mg of nucleotide per kg of diet); *P value = 0.0053
1
Page 4
Aquaculture Scoop / June Issue 2018
head kidney and in plasma lysozyme activity in the tilapia fed the
salmonids, Aquaculture 199, 159–169, (2001).
diet supplemented with 240 mg nucleotide/kg. These parameters are widely used to evaluate non-specific immunity in fish.
A. Fijolek, Salvage and de novo synthesis of nucleotides in Trypanosoma brucei and mammalian cells: Medicinsk kemi och
Therefore, this and several other studies demonstrate the importance
biofysik, (2008).
supplying exogenous sources of nucleotides to fish, particularly at young ages and when submitted to stress, such as infections.
A. Gil, Modulation of the immune response mediated by dietary nucleotides, Eur. J. Clin. Nutr. 56, 2002.
References P. Li, D.H. Lewis, D.M. Gatlin, Dietary oligonucleotides from yeast C. Burrells, P. Williams, P. Forno. Dietary nucleotides: a novel
RNA influence immune responses and resistance of hybrid striped
supplement in fish feeds: 1. Effects on resistance to disease in
bass (Moronechrysops × Moronesaxatilis) to Streptococcus iniae infection, Fish Shellfish Immunol. 16,561–569, 2004.
XXIV
M.M. Barros, I.G. Guimarães, L.E. Pezzato, R.
29 - 31 of JANUARY
2019
2019
RUSSIA, MOSCOW, VDNH, PAVILION № 75
2019
Oliveira Orsi, A.C. Fernandes Junior,C.P. Teixeira, et al., The effects of dietary nucleotide mixture on growth performance, haematological and immunological parameters of Nile tilapia, Aquaculture Research. 46, 987–993, 2015. M.S. Hossain, S. Koshio, M. Ishikawa, S. Yokoyama, N.M. Sony, Dietary nucleotide administration influences growth, immune
MINISTRY OF AGRICULTURE OF RF
responses and oxidative stress resistance of juvenile red sea bream (Pagrus major), Aquaculture 455, 41–49, 2016. Li, P., Burr, G.S., Goff, J., Whiteman, K.W., Davis, K.B., Vega, R.R., Neill, W.H., Gatlin, D.M. A preliminary study on the effects of dietary supplementation of brewers yeast and nucleotides, singularly or in combination, on juvenile red drum (Sciaenopsocellatus). Aquaculture Research 36, 1120–1127, 2005. Mauel M.J. & Miller D.L. Piscirickettsiosis and piscirickettsiosis-like infections in fish: a review. Veterinary Microbiology 87, 279–289, 2002. Shi-Yen Shiau, Jacques Gabaudane, Yu-Hung Lina. Dietary nucleotide supplementation enhances immune responses and survival to Streptococcus iniae in hybrid tilapia fed
PAVILION “KHLEBOPRODUKTY” (№ 40), VDNH, P.O.BOX 34, MOSCOW, 129223, RUSSIA TEL.: (495) 755-5035, 755-5038. FAX: (495) 755-6769, 974-0061 E-MAIL: INFO@EXPOKHLEB.RU. INTERNET: WWW.BREADBUSINESS.RU INTERNET: WWW.MVC-EXPOHLEB.RU
Aquaculture Scoop / June Issue 2018
diet containing low fish meal. Aquaculture Reports 2, 77–81, 2015.
Page 5
Innovative microbial-based solutions for sustainable shrimp farming discussed at Asian-Pacific Aquaculture 2018 in Taiwan CONTACT: Stéphane RALITE Aquaculture Product Manager Tel: +33 (0)5 62 74 5555 E-mail: sralite@lallemand.com
MEDIA RELATIONS: Sylvie ROQUEFEUIL Communications and PR Manager Tel: +33 (0) 684 727 610 E-mail: sroquefeuil@lallemand.com
BLAGNAC, FRANCE – April 26, 2018
It generates severe losses across Asia, either
– At the latest Asian-Pacific Aquaculture
directly or in association with other
2018 conference (APA 18) in Taipei, Taiwan,
pathogens. The trial results were presented
Lallemand Animal Nutrition, shared the
by Eric Leclercq, Ph.D., Aquaculture R&D
results of new studies conducted in
and Technical Support Manager with
partnership with ShrimpVet Laboratory at
Lallemand Animal Nutrition. The trial was
Nong Lam University. These studies
conducted at ShrimpVet Laboratory in Ho Chi
encompass the development and evaluation
Minh City, Vietnam, on EHP-challenged
of functional feed ingredients to help address
juvenile whiteleg shrimp. It evaluated a
important shrimp health issues such as
multi-strain yeast-based additive developed
Enterocytozoon hepatopenaei (EHP)
by Lallemand Animal Nutrition - YANG - with
challenge, or white feces syndrome (WFS), as
enhanced immune-modulating properties
outbreak and related loss of growth.
well as the development of integrated
and binding activities against undesirable
Importantly, ‘runt’ shrimp typically act as
bioremediation strategies for pond water
bacteria. YANG was fed for 14-days prior to
disease reservoir, so reducing their
management. They suggest different
the disease challenge and during the
prevalence can help safeguard the crop to
approaches to answer important issues of
challenge period. “With YANG, the pathogen
harvest,” he concluded1.
shrimp health, nutrition and management in
load in the hepatopancreas, measured by
a sustainable way.
qPCR, was reduced at all timepoints and by
As with EHP, White Feces Syndrom (WFS) is
up to 64% at the peak of infection. As a
a pathology that strongly affects shrimp
result, the body weight of challenged shrimp
growth and FCR, but also survival. The
was 7.9 % higher thanks to, interestingly, a
infectious nature of the disease, and
much reduced prevalence of severely
development of a challenge model, were
Microbial-based functional ingredients for aquafeed: new perspectives
EHP
compromised animals” Dr. Leclercq
only recently described by Professor Loc
EHP is an intracellular parasite that targets
explained. “YANG, applied preventively and
Tran from ShrimpVet Laboratory. The trial
the shrimp hepatopancreas and gut
over an EHP challenge period, can thus help
presented at APA 20182 aimed at assessing
epithelial lining, causing stunted growth.
contribute to reducing the severity of the
the potential of YANG to help mitigate the
1. Effect of a multi-strain yeast-based functional additive on EHP-challenged juvenile white shrimp. Eric Leclercq, Stéphane Ralite, Phuc Hoang, Loc Tran, and Mathieu Castex. Presented at Asian-Pacific Aquaculture 2018 conference, April 22-26 2018, Teipei, Taiwan. 2. Effect of selected functional health feed on white shrimp litopenaeusvannamei challenged with a novel infection model for white feces syndrome. Eric Leclercq, Stéphane Ralite, DiênNguyễn, Loc Tran, and Mathieu Castex. Presented at Asian-Pacific Aquaculture 2018 conference, April 22-26 2018, Teipei, Taiwan.
Page 6
Aquaculture Scoop / June Issue 2018
severity and impact of the syndrome, using
concept has been applied to aquaculture for
Lallemand Animal Nutrition is
the recently available WFS challenge model.
decades with the goal of facilitating the
committed to optimizing animal performance
Results indicated a lower prevalence of gross
management of organic matter accumulation
and well-being with specific natural
syndromes at the peak of infection, a lower
and nitrogen compounds in ponds.
microbial product and service solutions.
loss of body-weight and a clear trend
Bioremediation can be powerful but is also a
Using sound science, proven results and
towards a higher survival. This highlights for
complex technology requiring informed
knowledge, Lallemand Animal Nutrition
the first time, thanks to YANG unique
management attuned to local conditions and
develops, produces and markets high value
properties, the potential of a microbial-based
targets. Based on in vitro, pilot-scale and
yeast and bacteria products - including
solution as part of an integrated
field trials, Dr. Leclercq discussed some key
probiotics, silage inoculants and yeast
management program to support good
factors of success in the selection and
derivatives. Lallemand offers a higher level
health and performance under these
deployment of an effective bioremediation
of expertise, leadership and industry
conditions.
strategy for shrimp farming3. Distinct
commitment with long-term and profitable
microbial solutions are available, each
solutions to move our partners Forward.
addressing specific aspects of the pond
Lallemand Animal Nutrition is Specific for
system. When properly applied and
your success.
Bioremediation approach Bioremediation is defined as: â&#x20AC;&#x153;The treatment
combined, bioremediation solutions can
of pollutants or waste by the use of
become powerful tools to secure and
For more information, please visit
microorganisms (such as bacteria) that
increase the capacity of the pond to carry a
www.lallemandanimalnutrition.com.
breakdown undesirable substances.â&#x20AC;? The
healthy crop to harvest.
3. Some critical steps to the successful development and deployment of an integrated bioremediation strategy in pond aquaculture. Eric Leclercq, StĂŠphane Ralite, and Mathieu Castex. Presented at Asian-Pacific Aquaculture 2018 conference, April 22-26 2018, Teipei, Taiwan.
Not all products are available in all markets nor all claims allowed in all regions.
Advertise here Be seen by thousands of industry professionals
Tel: +44 117 2306493 Email: smajor@nisamedia.com
Aquaculture Scoop / June Issue 2018
Page 7
FISA: ONE STOP SOLUTION FOR YOUR NETTING, BECAUSE WE KNOW NETTING Fibras Industriales S.A., commercially known as FISA, is a netting and
The first stage was to divert existing knotless Rachel machines
rope manufacturer with more than 70 years in the business. Until the
towards the production for Chile´s Salmon aquaculture market. As this
late 90s FISA, focused mostly on the South American market with
market grew at a notable speed, it was within no time that FISA was
some distribution to Central and North America. With Peru fishing
obliged to invest in new machinery for this netting. With this extra
around 9 million tons per year and Chile fishing an additional 4 million
capacity, FISA entered into new markets, such as lake farmed tilapia in
tons, the two countries alone represented around 15% of the world
Honduras and Mexico. Also, during the first years of the new
fishing, in terms of volume, until the beginning of the new millennium.
millennium, FISA started supplying rigged cages and bulk netting to
With a 40% market share in those two countries, together with
European customers with tougher weather and current conditions
additional sales to Ecuador, Mexico and North America, FISA had
such as Spain´s Canary Islands and Greece.
above 8% market share of the world´s netting requirements. Market share was much higher when fishing with multifilament netting, due
Each time FISA enters a new market, it learns, together with its
that FISA´s monofilament netting was introduced approximately 5
customers, the specific requirements for each market. With this
years ago.
information, FISA develops new products that better suits each requirement. FISA always innovates and adapts to every market´s
FISA knows that markets change in time; therefore, over the past 20
specific requirements thanks to the complete range of products that
years FISA has dedicated time and resources to grow in the
manufactures. This is an advantage towards its competition. Below a
aquaculture industry on a global scale.
few examples:
Page 8
Aquaculture Scoop / June Issue 2018
FISA POLYMAX® ROPES
and standards relating to raw material, but actually it runs realistic
In the Canary Islands, one can find very strong currents that cause the
accelerated U.V. effect tests. At FISA we take netting and ropes, with
cages´s vertical ropes to rub with the structural cage. This leads to
different characteristics, thru rigorous testing that includes initial
friction and abrasion of the rope. Apart from adding plastic hoses to
“standard” breaking load and elongation tests, followed by
the first 1.5 meters of the rope, FISA proposed to its customer the use
accelerated abrasion effect and UV accelerating effect. All of these
of Polymax® ropes instead of polypropylene or Polysteel. For those of
tests are made in order to see how the breaking strength, elongation
you not familiar with the difference between these products, Polysteel
and working load of the product vary after use and deterioration.
is a mix of polyethylene and polypropylene (mixed at the extrusion
These tests give clear indicators as to what products are more
stage) which gives the product the benefits of both materials. In the
adequate for each specific use.
tests on finished products. Two examples would be abrasion and
case of Polymax® the rope is composed of Polyethylene and Polyester, a combination that highlights flexibility and high abrasion
As part of its service, FISA is always glad to receive used products after
resistance. What FISA has done is taken a polyethylene rope and
being used for a specified period of time. This way it can evaluate the
wrapped it in multifilament Polyester. This product is slightly more
performance and compare the durability of alternative products used
expensive, mainly due to its higher weight difference, but its abrasion
in the same or similar water conditions.
and UV resistance (thus delaying the downgrading of the rope) are higher and greatly outweigh the extra costs, which would just add up
FISA will gladly share more of its extensive experiences, including the
to a couple of hundred US$ per cage approx.
advantages of using braided knotted netting for tilapia farms in lakes, the use of monofilament polyethylene and SUPRA® netting for
FISA POLYTAR® ROPES
predator protection, the use of long life twisted knotless SHOGUN®
An additional product FISA recommends for harsh conditions is the
design and maintenance.
netting for bird protection, as well as some technical advice in cage
Polytar rope. This rope is produced out of high tenacity polyester and it is coated with a tar solution developed by FISA. This Tar solution
For more specific recommendations, feel free to contact us on
works as a lubricant during maneuvering, especially with the
sales@fisanet.com.pe
stretching of the rope in open sea conditions. It is important to mention the process on how this rope gets tarred: FISA tars the twines that compose the ropes so it is not just a top layer of protective tar but really a rope produced with tar inside. This protective coating also gives added protection against UV radiation.
ACCELERATED U.V. AND ABRASSION RESISTANCE TESTS FISA´s quality control department gives great importance to follow up controls of our end products under the most realistic and life resembling situations. FISA doesn’t just rely on the theoretical facts
Aquaculture Scoop / June Issue 2018
Page 9
LiceSonic: an environmentally friendly solution for sea lice control European research project for sea lice control
development projects in previous years as
environments. The system is also low
well.
maintenance and more cost effective
LiceSonic is an European research project
Sealice is the most significant and
that aims to provide an environmentally
widespread pathogenic marine parasite in
The LiceSonic system is designed to only
friendly solution to control sea lice in open
open sea aquaculture, causing health issues
target sea lice when they are present in the
finfish productions using ultrasound
for cultured fish and is a severe risk for the
facility through a combination of technology
technology. The project kickstarted in May
marine environment. The economic damage
with fish and water quality monitoring. The
2017 and is coordinated by LG Sonic. The
resulting from sea lice exceeds â&#x201A;Ź 1 billion
solution also comprises of an innovative sea
idea is to develop a system that only targets
per year globally in reduced production,
lice management system, which will receive
sea lice when they are present in the facility
quality and pharmacological treatment
direct input on sea lice infestation on fish,
through combining ultrasound with fish and
costs. Severe outbreaks of sea lice in
through mobile application. In addition,
water quality monitoring. The solution will
Norway and Scotland along with a toxic
dissolved oxygen and temperature
be chemical free, robust and low
algal bloom that hit Chile in early 2016
measurements are included in the
maintenance. The first feasibility studies
resulted in a global salmon supply decline
decision-making process of the
resulted in a 60% reduction in sea lice
of 9%. The most common practice for
management system.
attached to salmon.
targeting sea lice in fish farms is the use of
compared to bio-active treatments.
bio-active treatments.
How does it work?
receives co-funding from Eureka Member
However, regulations regarding
The use of ultrasound to control sea lice is a
Countries and the European Union Horizon
pharmaceutical treatment have become
novel technology that has been trialed in
2020 Framework Programme. The total
stricter in recent years. Health regulations in
several laboratory and in-situ studies with
duration of the project is 30 months.
the European Union have resulted in further
positive results. Ultrasonic sound waves of
restriction of these substances as residual
specific frequencies are generated and
amounts leak into the environment, where
transmitted through a fish cage. These
they often affect other marine life. Sea lice
sound waves interfere with sea lice growth
EuroStars funds the LiceSonic project, which
Innovation in the water industry LG Sonic is a Dutch company whose mission
also show resistance to bioactive substances
is to eliminate harmful chemicals in the
since, as these treatments are becoming less
water industry. The company controls algae
effective. A radical new approach to healthy
and biofouling in large water surfaces using
fish farming is strongly needed to prevent
ultrasound and is combined with near
further economic damage and to protect
real-time water quality monitoring. The
the environment.
technology is chemical-free and doesnâ&#x20AC;&#x2122;t disturb the natural balance of water
LiceSonic has a radical new approach to
ecosystems. Ultrasound has proven to be
treat sea lice infestations. The goal of
safe for fish, plants, zooplankton, and
LiceSonic is to provide the aquaculture
insects. LG Sonic has worked together with
industry with an environmentally friendly,
several different European Universities and
chemical-free, and robust solution that can
Fig 1: The lifecycle of Caligus (source:
Research Institutes and successfully
effectively control sea lice without harming
https://salmonfarmingstandrews.wordpress.
coordinated European research and
the fish and without causing harming marine
com/)
Aquaculture Scoop / June Issue 2018
Page 11
An initial set of frequencies attacks the sea
after which the systems are likely to be
lice when they are in the Nauplius stage. The
deployed at other aquaculture sites around
LiceSonic technology uses ultrasonic
the world as well.
pressure cycles that, when attuned appropriately, target cavities within the sea
About the author
lice that consequently collapse. This results Fig 1. Nauplius before and after ultrasonic treatment
in the death of the Nauplius.
Microbiologist Lisa Maria Brand is the chief technology officer at LG Sonic,
The second set of frequencies is designed to
headquartered in the Netherlands.
affect the attachment of sea lice to fish. The
Throughout her career, she has coordinated
in two ways. Sea lice have several phases in
vibrations of the ultrasound cause the sea
and collaborated on various national and
their life cycle, from egg to grown sea lice.
lice to release from the fish and prevents
European research projects that involve
They attach to fish during their adult and
them from attaching, leading to fewer
freshwater quality analysis and improvement
pre-adult phases and are free living as larvae
infections on the fish itself.
measures. She specializes on algal and
(Nauplius I, II) and copepods.
cyanobacterial issues and their causes. The first feasibility studies resulted in a 60%
The ultrasound interferes with sea lice during
reduction in sea lice attached to salmon. A
the Nauplius stage and when they attempt
full-scale field study will be performed
to attach to fish.
during the second half of 2018 in Norway,
Farmed Atlantic salmon constitutes over half of the total global salmon market
Sign up to our FREE weekly newsletter Email us at seafood@nisamedia.com Source: FAO- UN
Page 12
Aquaculture Scoop / June Issue 2018
YOUR INDUSTRY MAGAZINE Your aquaculture resource.
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Extrusion processes
Issue 14 / March 2017
Aquaculture Scoop is a quarterly magazine featuring news and technical articles on feed, equipment, services, events and best practices. Bringing you the latest up-to-date relevant news, upcoming industry events and more. Industry news Technological developments Company profiles Free to read!
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Fish health challenges
Fish descaling
Mycotoxins in aquafeed
Net cleaning
Fish feed factory in Zambia
Sustainable sushi
Industry Events
Feed Pelleting
Issue 16 / October 2017
Industry Events
Why the OctoFrost IF Cooker will be the success of your shrimp business The OctoFrost™ IF Cooker is the latest technological innovation in the shrimp processing industry. It uses the OctoFrost™ patented
3-temperature zones which guarantees shrimp’s core temperature to reach the food safety temperature of 73°C while surface stays below 80°C. This means that overcooking is avoided and highest yield
possible is achieved. Furthermore, the unique rain shower system guarantees the quickest heat transfer, allowing for accurate temperature control within 0.2°C of the set temperature.
OctoFrost™ Impingement Technology Every product is surrounded by a static layer of air that insulates it and slows down heat transfer. The OctoFrost™ IF Cooker uses a rain shower system to break this static layer through impingement
technology. This results in the fastest heat transfer through conductivity – the essence of OctoFrost™ Impingement technology.
OctoFrost™ Crossflow System
due to the cross-flow water system. The OctoFrost™ IF Cooker is
designed for all types and sizes of shrimp (including PD, PUD, HOSO, HLSO and EZ Peel).
Additional Benefits: Due to the OctoFrost™ cross-flow water system, the water flowing
through the IF Cooker has the exact set temperature in each zone. The
• CIP system in place.
during the cooking process.
system.
food processor has absolute control over the time and temperature
The 3-temperature Zones The 3-temperature zones system allows the user to start with a higher
temperature in zone 1 while reducing it in zones 2 and 3. This creates a “flat belly” temperature curve, allowing the heat to travel to the core of
• Significantly faster heat transfer due to the impingement rain shower • A high volume of recirculated water over the product.
• Energy efficient steam injection into the cooking water. • Weighing belt for an even infeed into the IF cooker.
• Three infeed options that allow for great flexibility; bulk, belt, and tray infeed.
the product without overcooking the surface.
Read more about the technology and benefits of the OctoFrost™ IF
Key Benefits of the OctoFrost™ IF Cooker
http://bit.ly/OctoFrostIFCooker
Processors can achieve the highest possible yield due to cooking in the 3 patented temperature zones. ‘Overcooking’ is avoided, enabling a
high yield and perfect product quality (color, shape, texture, and bite).
Cooker here:
Have any questions? Reach out to our Sales team: sales@octofrost.com
There is 100% food safety regarding homogeneous cooking. No
‘undercooked’ meat, no grey spots, not even with small-sized peeled shrimp (PUD). Full temperature control in each temperature zone
Aquaculture Scoop / June Issue 2018
Page 15
Events in detail April
Click this link to download our events planner today and keep up to date with the latest industry meetings 2018 Year Planner
July
AquaFisheries Cambodia 5- 7th September
Asian Pacific Aquaculture 2018
Applied Food & Feed Extrusion (Asia)
Cambodia
23-26th April
25-27th July
www.myanmar-aquafisheries.com/
Taipei, Taiwan
Bangkok, Thailand
www.marevent.com
www.fie.com.au/events/applied-food-feed-e
October
xtrusion-thailand Aquafeed Extrusion Technology (Europe) 23-25th April
Future Fish Eurasia August
Ås, Norway
18-20th October Izmir, Turkey
www.fie.com.au/events/aquafeed-extrusion-
Food & Feed Extrusion Technology
norway
(Australia)
www.eurasiafairs.com/eng/index.html
20-22 August
Latin American & Caribbean Aquaculture
Seafood Expo Global
Victoria, Australia
2018
24-26th April
www.fie.com.au/events/extrusionaust
23-26th October
Brussels, Belgium www.seafoodexpo.com
Bogota, Colombia Nor-Fishing
www.marevent.com
21st-24th August Food & Feed Drying Technology (Europe)
Trondheim, Norway
26-27 April
www.nor-fishing.no/?lang=en
Ås, Norway www.fie.com.au/events/drying-norway May
AquaFisheries Myanmar AQUA 2018
8-10th November
25-29th August
Myanmar
Montpellier, France
www.myanmar-aquafisheries.com/
www.marevent.com Offshore Mariculture Conference 15-17th May
World Seafood Shanghai Exhibition (SIFSE)
Singapore
29-31 August
www.offshoremariculture.com/asia
Shanghai, China www.worldseafoodshanghai.com/en September
January AquaEx 2019 Hyderabad, India www.aquaexindia.com
Aviemore, Scotland www.aquacultureuk.com/
2019
31 January – 2 February
Aquaculture UK 23-24th May
November
8th International Symposium on Aquatic Animal Health
March
Thaifex 2018
2-6th September
29th May – 2nd June
Prince Edward Island, Canada
Aquaculture 2019
Bangkok, Thailand
www.isaah2018.com
7-11 March New Orleans, USA
www.thaifexworldoffoodasia.com Seafood Expo Asia June
www.marevent.com
4-6th September Hong Kong
Seaweb Seafood Summit
www.seafoodexpo.com
18-21 June Barcelona, Spain www.seafoodsummit.org
Page 16
Aquaculture Scoop / June Issue 2018