Salmobreed fxcom 2014

Planner

Search planner

« November 2014»
MonTueWedThuFriSatSun
          1 2
3 4 5 6 7 8 9
10 11 12 13 14 15 16
17 18 19 20 21 22 23
24 25 26 27 28 29 30
huskeliste Linje
pilLink 24.11 AKVA group ASA:..
pilLink 11.02 Cermaq ASA -..
pilLink 19.02 Aquaculture..

New in business

Vacancies

Phillips June 2014

Fish farmed in Arizona sold in Canada

Canada: If you visit a live fish market in Vancouver, chances are that you will find tanks containing tilapia from farms in the United States where warm water is pumped out of the ground, allowing for low production costs

Odd Grydeland

As previously stated by this FishfarmingXpert writer, one of the ways so-called “closed containment” fish farming can work is when one has access to a supply of either warm water or a source of cheap heating energy where fast-growing fresh-water fish can be produced in a short turn-around time. One such farm that is supplying the Canadian largely Asian community with fresh fish is Desert Springs Tilapia, and Mary Carroll, a student at the University of Arizona recently described this operation and its operational advantages;

On a hot October day, Durkee McMaster scooped up a net of quarter-sized tilapia from a round water nursery tank. The tank is one of several at Desert Springs Tilapia, an aquaculture farm located in the central Arizona desert. With water in short supply and high demand, fish farming in this arid land may seem counterintuitive to sustainability. On the contrary, Desert Springs is making great strides toward sustainable farming in a unique way.

The practice of aquaculture has become popular in the United States over the past 40 years, due in part to the overexploitation of global fisheries. A 2010 United Nations Food and Agriculture Organization report said, “Never has the need for sustainable global fisheries been more apparent and never have global fish stocks been more threatened“.

Kevin Fitzsimmons, professor in the Department of Soil, Water and Environmental Science at the University of Arizona, has worked in aquaculture for 25 years. He says the practice became popular in North America during the 1970s when people recognized that global fisheries were declining due to unsustainable practices, including trawling the ocean floor and overharvesting many species. “Here in Arizona we use a lot of water for irrigation,” Fitzsimmons said. “It just made sense that we grow fish or shrimp in that water before we use it to irrigate field crops – so that all of the waste from fish goes out as fertilizer for the crops.” McMaster and Tark Rush, former students of Fitzsimmons, co-manage and operate the Desert Springs Tilapia farm in Dateland. McMaster holds a degree in fisheries management from the UA School of Natural Resources and the Environment. Rush has a degree in microbiology.

Dealing with salty water

A unique feature of the farm is the use of a water source which has proven inadequate for raising the types of crops historically grown in the area. This farm was originally a cotton farm, McMaster says. As groundwater was pumped down, it became salty. The salinity actually crept into the groundwater. Cotton can handle zero parts of salt so the farm was no longer able to grow cotton.” Tilapia benefit from salinity levels of 2-4 parts per thousand, McMaster explains. “That’s enough to kill most crops—in particular, vegetable or table crops,” McMaster said. “Fish thrive on salt water as a general rule. Even freshwater fish, to a point, will do much better with salinity in the water.”

Farming aquatic, rather than terrestrial animals, for protein makes good sense. Aquatic animals require less energy for body support due to near neutral buoyancy. All farmed aquatic species are poikilothermic. In other words, they do not require energy to regulate body temperature. Feed conversion ratios are much higher for fish - 1.5 kilogram (kg) of feed will produce 1 kg of fish while 8 kg of feed will produce 1 kg of beef. As a mainly herbivorous species, tilapia is a good choice to farm. The fish requires less fishmeal, oils, and protein than other aquaculture farmed species, yet still provides a great source of protein and vitamins. The fish grown at the Arizona farm are packed fresh on ice and shipped to restaurants and supermarkets in Phoenix, Las Vegas, and Southern California.

Year-round productivity

Another unique feature of this farm is that the aquifer supplying the water is geothermally heated. The water comes out at a balmy 85- 89 degrees Fahrenheit. Tilapia thrives in water temperatures of 82-86 degrees. This increases profitability by reducing energy costs and supports year-round production.

The farm enhances its sustainability by making a good second use of of the water. Although cotton cannot grow in the saline water, other crops can. “Most people consider water as their primary input product, but to us, it is a waste product,” McMaster said. “You can either throw it out or you figure out ways to utilize it as a resource.”

The effluent water does not go to waste. It contains key nutrients vital to plant growth including nitrogen and phosphorus. The fish farmers are able to successfully grow acres of wheat, sorghum, alfalfa, and barley while eliminating the need for commercial fertilizers. The efforts at Desert Springs Tilapia are helping to reduce pressure on global fisheries and provide a good source of protein to feed a growing population. Perhaps these methods should be a more profitable and sustainable way of farming for more farmers in the future, Fitzsimmons said. “I would like to see all agriculture in the world integrate with aquaculture and use the water twice. Whether you are in Egypt or Pakistan or Mexico or southwestern Arizona, anybody who is pumping water to irrigate ought to grow fish in it. It doesn’t hurt anything; it just adds a lot of fertilizer value to the water, and the farmer gets another cash crop.”






Tip others
Sent to email:   Your email-address:
 
(usa comma as separator for multiple recipients)    
     
Your comment: (optional)    
 
Foto: Christian Pérez

AquaChile to harvest 8% more fish

AquaChile expects to harvest around 60,262 tonnes of Atlantic salmon this year - a 13.4 per cent increase compared to the 53,119 tonnes recorded in 2013. » Read more

Grandi's aquaculture adventure is ova

UK: Benchmark Genetics Limited has agreed to purchase all of HB Grandi’s shares in Stofnfiskur, Iceland’s largest producer of salmon eggs, in a deal worth at least €12 million. » Read more

Foto: Audubon Magazine

Bargain oysters on offer

UK: Cut-price supermarket chain Lidl is selling live Scottish-farmed oysters in the run-up to Christmas. » Read more

Foto: Tim Reid, Sea Grant

Does aquaculture have a future in the US?

Canada: The debate churns as the national Oceanic and Atmospheric Administration (NOAA) is set to open US waters to aquaculture » Read more

Foto: Christian Pérez

Chilean salmon slump continues

Chilean Trim-D salmon fillets C+F* Miami (FL), USA, were traded at an average price of US$ 3.92 per pound during week 46 - the eleventh weekly decrease in a row and the lowest price observed since late January 2013. » Read more

Award for East Lothian processor

UK: Musselburgh seafood processor J K Thomson is celebrating its success in Scotland’s Modern Apprentice Awards 2014, where it won SME Employer of the Year. » Read more

Foto: Kari Johanna Tveit

Producer seeks tougher lice laws

Marine Harvest Norway has asked the authorities to implement stricter regulations to fight sea lice, claiming "the industry can not regulate itself". » Read more

Foto: Øyvind Sjøthun Røen

“Rock solid” prices predicted

Norway: SalMar has delivered a solid Q3 report, driven by a higher than expected contract portfolio and favourable harvesting profile in Central Norway. » Read more

Foto: Norges sjømatråd

Salmon up by over 5%

The average export price for HOG Norwegian salmon reached €4.50 per kg in week 46, according to the latest figures from the NASDAQ Salmon Index. » Read more


Market / Economy

Our other web sites

Badinotti-2014

Latest News

Science News

Research & Development

Advertisement

News corner
24. november 2014 kl 08.08
Benchmark seeks SalmoBreed deal
24. november 2014 kl 07.35
New lab for Prince Edward Island (PEI)
23. november 2014 kl 22.26
Funding for whisky salmon feed
23. november 2014 kl 19.10
Grandi's aquaculture adventure is ova
23. november 2014 kl 14.15
AquaChile to harvest 8% more fish
21. november 2014 kl 14.42
Bargain oysters on offer
21. november 2014 kl 07.01
Does aquaculture have a future in the US?
21. november 2014 kl 05.21
Chilean salmon slump continues
20. november 2014 kl 23.15
Award for East Lothian processor
20. november 2014 kl 08.47
Producer seeks tougher lice laws
More articles
Science corner
22. februar 2012 kl 10.20
Lean fish provide omega-3
03. februar 2012 kl 12.20
Solving the health problems of sterile salmon
03. november 2011 kl 07.58
Low levels of undesirable substances in Norwegian farmed fish
22. september 2010 kl 09.31
Challenging salmon to overcome lice
01. september 2010 kl 07.00
Nytt forskningsprosjekt på fiskehelse
16. august 2010 kl 08.23
Analysis of drug residues and undesirable substances in farmed fish
05. mai 2010 kl 07.24
Undesirable substances and drug residues in farmed fish
20. april 2010 kl 07.00
- Fisk føler smerte
16. mars 2010 kl 07.00
Surveillance of pharmaceuticals used in fish farming 2009
12. mars 2010 kl 08.24
Focus on young people, climate and Atlantic salmon
More articles
Copyright © 2007 Norsk Fiskeoppdrett AS. All rights reserved.
FishfarmingXpert
Boks 4084 Dreggen
5835 BERGEN NORWAY
Editor: Gustav-Erik Blaalid
E-mail: editor@fishfarmingxpert.com
Phone: +47 55 54 13 00
Fax: +47 55 54 13 01
Design & Layout: Vest Vind Media - Powered by: EasyPublish CMS
Storvik_2014 Egersund Net 2014 Primozone 2014 Scanbio 2014