T
h
e
T
e
c
h
n
i
c
a
l
I
n
f
o
r
m
a
t
i
o
n
W
e
b
P
a
g
e
Benificial Bacteria - Bio-floc
Marine Shrimp Aquaculture
The University
of Southern Mississippi Thad Cochran Marine Aquaculture Center supports acceleration of United States- and Mississippi-based marine shrimp farming industries. The Gulf Coast Research Laboratory (GCRL), which is administered by the University, is a charter member of the U.S. Marine Shrimp Farming Program
Under this program USM-GCRL has developed a national and international reputation as a center for research and development of closed-system production systems. The marine shrimp farming research project at the GCRL:
•
Employs six full time people,
•
attracts graduate and postgraduate students for advanced study, and
•
provides technical support for the national marine shrimp farming industry.
The GCRL has developed a leadership role in closed-system water-reuse shrimp culture and reproduction research and has transferred aspects of that technology for use in commercial seed production facilities.
Need
•
The U.S. demand for shrimp increases at an annual rate of more than 10% per year.
•
More than 85% of the marine shrimp consumed in the United States is imported.
•
Importation of foreign shrimp results in an annual trade deficit in shrimp of more than $3.2 billion.
•
With the U.S. production of shrimp from the wild harvest constant for many years, development of a domestic shrimp farming industry offers the only potential to offset the shrimp trade deficit.
•
The worldwide shrimp farming industry is plagued by diseases and unsustainable farming practices..
•
Development of next-generation culture systems is necessary for the U.S. to develop a responsible shrimp farming industry.
Marine shrimp aquaculture at GCRL
•
Since 1985 the GCRL has been involved in the development of culture of the marine Pacific white shrimp, Litopenaeus vannamei.
•
In the early 1990s GCRL developed a closed maturation-reproduction system that is fast becoming the industry standard.
•
In 1997 GCRL designed a commercial-scale, next-generation culture facility based on 10 years of research in small-scale closed-system shrimp culture systems.
•
In 2004 GCRL constructed the commercial-scale, next-generation culture facility.
GCRL commercial-scale, next-generation culture facility.
Next generation facility
•
Twelve tanks in six greenhouses
•
Tanks are 100m2 in area and can hold 50-80 m3 of water that can be adjusted to any salinity.
100-m2 tanks
•
Zero water exchange utilizing floc bio-filtration technology for ammonia control allowing long term water reuse.
The bio-floc on surface of culture water is bacterial and eliminates liquid shrimp waste (ammonia).
•
A unique weir and chute system allow for efficient harvesting of the shrimp. The tanks can be completely drained in five minutes.
The harvest chute allows rapid harvest of a crop.
•
Harvest water is diverted to one of two retention ponds for remediation and reuse.
Retention pond for remediation of water after harvest.
•
Two crops per year can be produced without supplemental heating. During the past season the first crop was grown for 16 weeks with survival of 62%. production was 530 pounds per tank of 19-gm heads-on shrimp (21 – 25 count). The second crop was grown for 12 weeks with survival of 80%. Production was 350 pounds per tank of 12-gm heads-on shrimp (36 – 40 count).
Harvested shrimp.
Personnel
•
Dr. Jeffrey M. Lotz, Head
•
John T. Ogle, Shrimp Aquaculture Manager
•
Casey Nicholson, Shrimp Aquaculture Technician
•
Bonnie Seymour, Shrimp Aquaculture Technician
•
James Ballard, Shrimp Aquaculture Technician and M.S. student
Source: www.usm.edu (Marine Shrimp Aquaculture)
Ads by Google here