Can you tell me the pros and cons of farmed fish and seafood?!
Answers:
My bf is a farmer and I've done some research on this!.!.
When a cow is grass fed, he has the same omega fatty acid ratio as wild seafood!.!.!.
When fish is farm raised, it has the same omega fatty acid ratio as grain fed cattle!.!.!.
Grass fed cattle and wild fed seafood have almost the identicle omega fatty acid ratio!.!.!.Very good for your heart and artery clensing!.!.!.
Grain fed cattle and farm raised fish have almost the identicle omega fatty acid ratio!.!.Very very bad for your heart and artery clogging!.!.!.
Hope I've helped!.!. :-)Www@FoodAQ@Com
When a cow is grass fed, he has the same omega fatty acid ratio as wild seafood!.!.!.
When fish is farm raised, it has the same omega fatty acid ratio as grain fed cattle!.!.!.
Grass fed cattle and wild fed seafood have almost the identicle omega fatty acid ratio!.!.!.Very good for your heart and artery clensing!.!.!.
Grain fed cattle and farm raised fish have almost the identicle omega fatty acid ratio!.!.Very very bad for your heart and artery clogging!.!.!.
Hope I've helped!.!. :-)Www@FoodAQ@Com
Criticisms
The issue of feeds in fish farming has been a controversial one!. Many cultured fishes (tilapia, carp, catfish, many others) require no meat or fish products in their diets!. Top-level carnivores (most salmon species) depend on fish feed of which a portion is usually derived from wild caught fish (anchovies, menhaden, etc!.)!. Vegetable-derived proteins have successfully replaced fish meal in feeds for carnivorous fishes, but vegetable-derived oils have not successfully been incorporated into the diets of carnivores!.
Secondly, farmed fish are kept in concentrations never seen in the wild (e!.g!. 50,000 fish in a 2-acre (8,100 m2) area!.[1]) with each fish occupying less room than the average bathtub!. This can cause several forms of pollution!. Packed tightly, fish rub against each other and the sides of their cages, damaging their fins and tails and becoming sickened with various diseases and infections!.[2]
However, fish tend also to be animals that aggregate into large schools at high density!. Most successful aquaculture species are schooling species, which do not have social problems at high density!. Aquaculturists tend to feel that operating a rearing system above its design capacity or above the social density limit of the fish will result in decreased growth rate and FCR (food conversion ratio - kg dry feed/kg of fish produced), which will result in increased cost and risk of health problems along with a decrease in profits!. Stressing the animals is not desirable, but the concept of and measurement of stress must be viewed from the perspective of the animal using the scientific method!.[3]!.
Some species of sea lice have been noted to target farmed coho and Atlantic salmon!.[4] Such parasites have been shown to have an effect on nearby wild fish!. One place that has garnered international media attention is British Columbia's Broughton Archipelago!. There, juvenile wild salmon must "run a gauntlet" of large fish farms located off-shore near river outlets before making their way to sea!. It is alleged that the farms cause such severe sea lice infestations that one study predicted a 99% collapse in the wild salmon population in another four years!.[5] This claim, however, has been criticized by numerous scientists who question the correlation between increased fish farming and increases in sea lice infestation among wild salmon!. [6]
Because of parasite problems, some aquaculture operators frequently use strong antibiotic drugs to keep the fish alive (but many fish still die prematurely at rates of up to 30%[7])!. In some cases, these drugs have entered the environment!. Additionally, the residual presence of these drugs in human food products has become controversial!. Use of antibiotics in food production is thought to increase the prevalence of antibiotic resistance in human diseases!. [8]!. The use of antibiotic drugs in aquaculture has decreased considerably in the last decade!. Vaccinations and other techniques have virtually eliminated the need for antibiotics!. [9]
The lice and pathogen problems of the 1990s facilitated the development of current treatment methods for sea lice and pathogens!. These developments reduced the stress from parasite/pathogen problems!. However, being in an ocean environment, the transfer of disease organisms from the wild fish to the aquaculture fish is an ever-present risk factor!.[10]!.
The very large number of fish kept long-term in a single location contributes to habitat destruction of the nearby areas!. The high concentrations of fish produce a significant amount of condensed feces, often contaminated with drugs, which again affect local waterways!. However, these effects are very local to the actual fish farm site and are minimal to non-measurable in high current sites!.
Other potential problems faced by aquaculturists are the obtaining of various permits and water-use rights, profitability, concerns about invasive species and genetic engineering depending on what species are involved, and interaction with the United Nations Convention on the Law of the Sea!.
[edit] Environmentally friendly methods
This section does not cite any references or sources!. Please help improve this article by adding citations to reliable sources (ideally, using inline citations)!. Unsourced material may be challenged and removed!. (February 2007)
Example of self made recirculation Aquaculture system
An alternative to open ocean cage aquaculture, one in which the risk of environmental damage is substantially eliminated is through the use of a recirculating aquaculture system (RAS)!. A RAS is a series of culture tanks and filters where water is continuously recycled!. To prevent the deterioration of water quality, the water is treated mechanically through the removal of particulate matter and biologically through the conversion of harmful accumulated chemicals into nontoxic ones!.
Other treatments such as UV sterilization, ozonation, and oxygen injection are also utilized toWww@FoodAQ@Com
The issue of feeds in fish farming has been a controversial one!. Many cultured fishes (tilapia, carp, catfish, many others) require no meat or fish products in their diets!. Top-level carnivores (most salmon species) depend on fish feed of which a portion is usually derived from wild caught fish (anchovies, menhaden, etc!.)!. Vegetable-derived proteins have successfully replaced fish meal in feeds for carnivorous fishes, but vegetable-derived oils have not successfully been incorporated into the diets of carnivores!.
Secondly, farmed fish are kept in concentrations never seen in the wild (e!.g!. 50,000 fish in a 2-acre (8,100 m2) area!.[1]) with each fish occupying less room than the average bathtub!. This can cause several forms of pollution!. Packed tightly, fish rub against each other and the sides of their cages, damaging their fins and tails and becoming sickened with various diseases and infections!.[2]
However, fish tend also to be animals that aggregate into large schools at high density!. Most successful aquaculture species are schooling species, which do not have social problems at high density!. Aquaculturists tend to feel that operating a rearing system above its design capacity or above the social density limit of the fish will result in decreased growth rate and FCR (food conversion ratio - kg dry feed/kg of fish produced), which will result in increased cost and risk of health problems along with a decrease in profits!. Stressing the animals is not desirable, but the concept of and measurement of stress must be viewed from the perspective of the animal using the scientific method!.[3]!.
Some species of sea lice have been noted to target farmed coho and Atlantic salmon!.[4] Such parasites have been shown to have an effect on nearby wild fish!. One place that has garnered international media attention is British Columbia's Broughton Archipelago!. There, juvenile wild salmon must "run a gauntlet" of large fish farms located off-shore near river outlets before making their way to sea!. It is alleged that the farms cause such severe sea lice infestations that one study predicted a 99% collapse in the wild salmon population in another four years!.[5] This claim, however, has been criticized by numerous scientists who question the correlation between increased fish farming and increases in sea lice infestation among wild salmon!. [6]
Because of parasite problems, some aquaculture operators frequently use strong antibiotic drugs to keep the fish alive (but many fish still die prematurely at rates of up to 30%[7])!. In some cases, these drugs have entered the environment!. Additionally, the residual presence of these drugs in human food products has become controversial!. Use of antibiotics in food production is thought to increase the prevalence of antibiotic resistance in human diseases!. [8]!. The use of antibiotic drugs in aquaculture has decreased considerably in the last decade!. Vaccinations and other techniques have virtually eliminated the need for antibiotics!. [9]
The lice and pathogen problems of the 1990s facilitated the development of current treatment methods for sea lice and pathogens!. These developments reduced the stress from parasite/pathogen problems!. However, being in an ocean environment, the transfer of disease organisms from the wild fish to the aquaculture fish is an ever-present risk factor!.[10]!.
The very large number of fish kept long-term in a single location contributes to habitat destruction of the nearby areas!. The high concentrations of fish produce a significant amount of condensed feces, often contaminated with drugs, which again affect local waterways!. However, these effects are very local to the actual fish farm site and are minimal to non-measurable in high current sites!.
Other potential problems faced by aquaculturists are the obtaining of various permits and water-use rights, profitability, concerns about invasive species and genetic engineering depending on what species are involved, and interaction with the United Nations Convention on the Law of the Sea!.
[edit] Environmentally friendly methods
This section does not cite any references or sources!. Please help improve this article by adding citations to reliable sources (ideally, using inline citations)!. Unsourced material may be challenged and removed!. (February 2007)
Example of self made recirculation Aquaculture system
An alternative to open ocean cage aquaculture, one in which the risk of environmental damage is substantially eliminated is through the use of a recirculating aquaculture system (RAS)!. A RAS is a series of culture tanks and filters where water is continuously recycled!. To prevent the deterioration of water quality, the water is treated mechanically through the removal of particulate matter and biologically through the conversion of harmful accumulated chemicals into nontoxic ones!.
Other treatments such as UV sterilization, ozonation, and oxygen injection are also utilized toWww@FoodAQ@Com
http://en!.wikipedia!.org/wiki/Fish_farmWww@FoodAQ@Com
Tough one!.!.!.!.farmed fish is fine, better able to control the water temperature and diseases, against having them in the pens in the oceanWww@FoodAQ@Com
Farmed fish the water is monitored and does not have pollutants such as mercury!. I think myself that wild fish are better tasting than farmed!.Www@FoodAQ@Com
I guess the pros would be that the water is cleaner in the farmed fish!.Www@FoodAQ@Com