November | December 2011
Feature title: Copper Alloy Mesh
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The International magazine for the aquaculture feed industry
The European Copper Institute (ECI)
attended AquaNor 2011, in Trondheim,
F: Probiotic bacteria
Norway. ECI demonstrated copper accu-
Feed Management Ferguson et al. (2010) used more
alloys for use in both near and off-
rate and reliable molecular techniques to
shore marine aquaculture enclosures
Lactobacillus plantarum, Bacillus pumilus,Copper alloy mesh technology began in 1975 with
tilapia can obtain their essential amino acid
small requirements from GI in Northeastern
Lactobacillus acidophilus and Streptococcus salmon farming enclosures microbiota aloneUSA.
Since then, alloy technology has evolved and now is
demonstrate that diets supplemented with
at Booth C-226, “Copper Alloys in faecium as well as various mixtures of these when dietary sources are low or absent.
being successfully used in Japan, Australia and Chile,
Marine Aquaculture: Increasing
Pediococcus acidilactici exhibited altera- candidates. Other authors have isolated gut microbes
providing productive and sustainable solutions for fish
Productivity, Sustaining the Future”.
tions in GI microbiota. PCR-DGGE revealed However, other studies have failed to that can produce future applications and trials
farmers. Development of other enzymes involved in
The exhibit highlighted the use with an
direct antagonism of P. acidilactici of digestion (carbohydrases, esterases, forms,
show a difference in growth parameters withimproved copper alloy materials, mesh lipases, and
of various forms of copper alloys aquaculture system configurations are underway with a
uncultured bacterium (closest known rela-
and provided scientific evidence the use of various probiotics. Contradictory phosphatases, peptidases, cellulases), some
variety of species in China, Korea, Panama, Turkey, South
that copper alloys nets inisolated from the
tive was a bacterial clone marine results may reflect the differences in rearing of which are being assessed as potential
Africa, and the United States.
intestine of help improve fish health
aquacultureAtlantic salmon) during a period conditions and diet where fish reared under probiotics.
andreverting to nonsupplemented feeding. “Copper alloy mesh cages have improved the sanitary
of production, prevent predator near optimal conditions are unlikely to Anaerobic and sustainability of short-
conditions, productivity microbes can produce operations
Recent work maintain
attacks and escapes,conductedcage the at benefit from probiotic applications. chain fatty farmers raising salmon, trout
for aquaculture acids (which can elevate gut and
COPPER
volumes and minimize maintenance
Aquaculture and Fish Nutrition Research
costs and efforts. many motility and be used said Nigel purposes
Probiotics can improve growth perform- other species for years,” for energy Cotton of the
Aquarium, University of Plymouth supports ance by increasing nutrient utilisation and European Copper Institute.
or further lipid synthesis) by fermenting
this (see Figure 1). Here fish fed a P. acidilac- uptake, production of enzymes, amino acids, dietary carbohydrates. Obligate anaerobes,
tici supplemented diet exhibited consider- short-chain fatty acids and vitamins. primarily Cetobacterium somereae and
ALLOY MESH
ably higher LAB populations in their digesta, However, 2011, specific mechanisms in
In August the ECI presented the cop- Chlostridium spp. can produce large opened
marine aquaculture industry, which amounts
which, were identified as P. acidilactici. This per alloy cage solution at often hardand
scientific evaluations are AquaNor to of vitamin B12, thus tilapia do not require
up a favorable condition for further explor-
colonisation of the GI tract (at least during presented due in case deployedethical and
elucidate, a trial part to the in Turkey a the source this vitamin because of
ingdietary potentialof of this technology in
continual supplementation) is thought to be methodological limitations of animal stud-
over the summer. In September of 2011, the microbial production capability. Another
Europe and China.
a major advantage for potential probionts. ies, together with complex relationships
ICA joined efforts with the East China Sea mechanism which may improve digestive
Copper alloy mesh cage sustaining the Fisheries Researchmodes ofto demonstrate
between possible Institute action. function is the enhancement of the mor-
MORE INFORMATION:
Growth performance and the Bacteria commonly found in the trial
significant outcome of the their gut, phology of the GI tract.
world’s marine aquaculture effect on digestion and
nutrient utilisation
including Aeromonads, are known to pro-
project at the 11th Five-year National
Irina Dumitrescu
European Copper Institute
Morphological effects
duce Technological other gut microbes
Fisheryproteases and Innovation Exhibition, Avenue de Tervueren 168 - box 10
Improved growth performance has been a major activity of thewhich could beExpo,
produce amino acids Strait Fishery used Brussels, intestine
on the B-1150 Belgium
G
iven that supply of natural observed in tilapia fed diets supplemented by of the
onethe host. most influential fishery trade It +32 2 7777082
Tel: has been reported that probiotics can
Email: id@eurocopper.org
resources in the oceans is with a number of probiotics including This helps
event in China. to explain the findings of affect fish GI function and morphology. In
Newsome activities significantly raised Website: www.eurocopper.org
under increasing pressure, S. cerevisiae, Micrococcus luteus, B. subtilis, These et al. (2011) who showed that this respect, a study by Pirarat et al (2011)
Website: www.aquaculture.org
Pseudoscisena crocea otakii Sebastodes fuscescens Hexagrammos Lateolabrax japonicus
the marine aquaculture awareness of copper alloy mesh in the
industry is growing and looks set to
overtake traditional fishing industry technology and fostering a ‘Blue Revolution’ est in copper alloy cages resulting in
as a major source of edible seafood. for Chinese food production, through meet- significant sales in several parts of the
ing Chinese’s growing needs for protein. world and important trials in areas where
AquaStar
In Europe, Asia and Latin America the This trial kicked off through a partner- we are rolling out the experience” says
emphasis is on transforming the current ship with the East China Sea Fisheries Nigel Cotton of ECI. “Forward thinking ®
industry into a sustainable industry.
In fact, China has become the only
country in the world whose aquaculture
production volume exceeds that from tra-
Research Institute, a subsidiary organization
of Chinese Academy of Fishery Sciences and
ICA. They jointly embarked on a research
project, evaluating the effectiveness and
companies see the need for consolidation
of their resources to gain efficiencies,
leading to larger cages, the need for bet-
ter security from predicators, escapes and
VIV/ ILDEX India 2012
Fast growth in clean water!
ditional fishing. The country’s annual output potential to introduce copper alloy mesh better stock keeping”
for aquaculture constitutes as much as 20 into China’s marine aquaculture, as well as AquaStar product line
®
percent of global production output. exploring innovations to adapt this technol-
In September of 2011, • Probiotic strains to support gut health
However, owning to constraints placed ogy to the marine environment of China.
by out-of-date aquaculture technologies and During the past two years, this project
International Copper Association
(ICA) joined efforts with
February 22 - 24, 2012 • Biodegrading strains to stabilize water
facilities, as well as a series of unfavorable nat- has initiated a series of R&D efforts, the East China Sea Fisheries quality and pond bottom
ural environmental conditions, China’s marine focusing on verification, design, production Research Institute (ECSFRI), to
demonstrate the significant
aquaculture faces challenges with respect to and trial run of copper alloy mesh cages
outcome of introducing copper Register now fo
ensuring the adequate supply of healthy and tailor made for Chinese local marine
alloy mesh into China’s marine r • Im
pr Special theme
high-quality aquaculture products. environment. aquaculture through their free entrance! heal oveFeedtech Croptech
d gu
perf th and t
Given this background, International To-date 10 pilot cages have been suc- partnership at the Fuzhou Strait orm
• Im a
Copper Association China (ICA) and cessfully placed in Dalian, Weihai, Taizhou Fishery Expo, one of the most prov nce
qual ed w
the European Copper Institute (ECI) are
introducing copper alloy mesh into China,
and Fangchenggang for testing and on-going
research. The types of fish bred in these
influential fishery trade events
in China www.viv.net • Co
ity
ntro
ater
path l of
and respectively Europe, following its great cages include large yellow croaker, black bact ogenic
success in introducing the new technology rockfish, bass and greenling, etc. eria
The dedicated event for the
Indian Milling industries
into Chile Salmon farming to contribute to Along with this trial, ICA and ECI also
the sustainable development of the world rolled out a series of promotional activities, Your portal to India’s Feed to Meat trade
marine aquaculture. to educate Chinese and European stake-
holders and audiences on the benefits of
aquastar.biomin.net
Bangalore, India
The blue revolution adopting copper alloy mesh.
In China, a trial targets improving the "It’s an exciting time for this proven
professional standards of China’s agricultural product, we are seeing increasing inter- Naturally ahead
Biomin_Anzeige_AquaStar_01.indd 1 31.10.11 11:17
16 | InternatIonal AquAFeed | november-December 2011 november-December 2011 | InternatIonal AquAFeed | 17
40 | InternatIonal AquAFeed | november-December 2011 november-December 2011 | InternatIonal AquAFeed | 41
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18 | InternatIonal AquAFeed | november-December 2011
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