RSS Feeds

Earth Science

Space Science

Life Science

Fields of Scientific Study

Nanotechnology

Cancer

Definitions of The Fields of Scientific Study

Salmon go veggie to save wild fish stocks

April 04, 2006

Salmon, like humans, require omega-3 fatty acids in their diet to function healthily. But as the fish farming industry expands, feeding salmon and other aquatic species with pellets containing fishmeal and oil derived from processing wild-caught marine fish is unsustainable in the long term. This is due to rising demands for these commodities for aquafeeds and other purposes in the face of finite or declining annual global fish catches. To provide a solution with respect to fish oil, a team of scientists from the University of British Columbia and the Department of Fisheries and Oceans, Canada, have been studying the effects of replacing anchovy oil with canola oil (also known as rapeseed oil) in the diets of salmon.

The research group, led by Professors Colin Brauner and Patricia Schulte in collaboration with Dr. Dave Higgs in the Department of Fisheries and Oceans Canada, has been monitoring changes in fish growth, exercise capacity and hypoxia tolerance to investigate whether there are any negative consequences on the fish's growth performance and health from a change in diet. Their results, to be presented at the Society for Experimental Biology Annual Meeting on Tuesday 4th April [session A4], find that the fish suffer no ill effects from replacing up to 75% of the dietary lipid (mainly from fish oil) with canola oil.

"We are finding that as long as we meet the basic essential omega-3 fatty acid needs of the salmon with some dietary fish oil, such as those for EPA (eicosapentaenoic acid) and DHA (docosahexaenoic acid), the fish can be reared successfully on these alternate diets", says Professor Brauner, "As aquaculture continues to expand, fish oil will become increasingly more expensive because it is a limited resource, and canola oil will not only be more sustainable as a lipid source, but also will be consistently more cost effective too".

Using canola oil instead of marine fish oil (e.g. anchovy oil) in fish feed will also reduce the accumulation of contaminants in salmon such as PCBs and dioxins that are present in wild marine fish. This new "vegetarian" dietary approach is increasingly being adopted and will likely be applied to many other cultured fish species in the future.

Society for Experimental Biology

Related Omega-3 Fatty Acids Current Events and Omega-3 Fatty Acids News Articles

Omega-3 Fatty Acids Current Events and Omega-3 Fatty Acids News RSS

Half of the fish consumed globally is now raised on farms, study finds
Aquaculture, once a fledgling industry, now accounts for 50 percent of the fish consumed globally, according to a new report by an international team of researchers. And while the industry is more efficient than ever, it is also putting a significant strain on marine resources by consuming large amounts of feed made from wild fish harvested from the sea, the authors conclude.

Study reveals mounting evidence of fish oil's heart health benefits
There is mounting evidence that omega-3 fatty acids from fish or fish oil supplements not only help prevent cardiovascular diseases in healthy individuals, but also reduce the incidence of cardiac events and mortality in patients with existing heart disease.

The 'see food' diet
Current research suggests that a diet high in omega-3 fatty acids may help prevent one of the leading causes of legal blindness among the elderly.

Starve a Fever, Feed a Cold, Don't Be Stressed
Whether it's getting a cold during exam time or feeling run-down after a big meeting, we've all experienced feeling sick following a particularly stressful time at work or school. Is this merely coincidence, or is it possible that stress can actually make us sick?

Edible coating makes fish filets longer-lasting, healthier
Consumers may be able to eat longer-lasting, potentially healthier fish fillets if research at Oregon State University makes its way to the supermarket.

Omega-3 fatty acids appear to impact AMD progression
Omega-3 fatty acids found in fatty fish such as tuna and salmon may protect against progression of age-related macular degeneration (AMD), but the benefits appear to depend on the stage of disease and whether certain supplements are taken.

Omega fatty acid balance can alter immunity and gene expression
For the past century, changes in the Western diet have altered the consumption of omega-6 fatty acids (w6, found in meat and vegetable oils) compared with omega-3 fatty acids (w3, found in flax and fish oil).

Smoking, high blood pressure and being overweight top 3 preventable causes of death in the US
Smoking, high blood pressure and being overweight are the leading preventable risk factors for premature mortality in the United States, according to a new study led by researchers at the Harvard School of Public Health (HSPH), with collaborators from the University of Toronto and the Institute for Health Metrics and Evaluation at the University of Washington.

Eating fatty fish and marine omega-3 fatty acids may reduce risk of heart failure
Eating fatty fish and marine omega-3 fatty acids, which are found in fish oil, seems to protect men from heart failure according to one of the largest studies to investigate the association.

Eating fatty fish once a week reduces men's risk of heart failure
Eating salmon or other fatty fish just once a week helped reduce men's risk of heart failure, adding to growing evidence that omega-3 fatty acids are of benefit to cardiac health. Led by researchers at Beth Israel Deaconess Medical Center (BIDMC) and reported in today's on-line issue of the European Heart Journal, the findings represent one of the largest studies to investigate the association.

More Omega-3 Fatty Acids Current Events and Omega-3 Fatty Acids News Articles

	Kirkland Signature Natural Fish Oil Concentrate with Omega-3 Fatty Acids-400 Softgels by Omega 3 Fatty Acids Kirkland Signature fish supply comes from deep ocean waters. Our fish oil is not supplied from farm-raised fish. State-of-the-art molecular distillation process is used to remove PCBs and dioxins which guarantees purity and potency. The fish oil is derived from a variety of fish species, to maximize omega-3 fatty acid concentration. Fish Oil naturally contains the Omega-3 Fatty Acids, EPA and DHA. Omega-3 Fatty Acids help maintain heart and vascular health.* *These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure or prevent any disease.
	Coromega Omega-3 Supplement, Orange Flavor, Squeeze Packets, 90-Count Box by Coromega Daily dose squeeze packets. A delicious pudding-like alternative to capsules! Coromega provides superior bioavailability. In clinical study, the Omega-3 in Coromega was shown to enter the bloodstream faster at three times the levels of a fish oil product in softgel form. Each packet of Coromega delivers the daily intake levels of Omega-3 EPA and DHA recommended by experts for adults and children. As Pure As It Is Delicious: Coromega contains premium quality fish oil from deep, cold-water fish; molecular distillation assures product purity. To guarantee freshness and potency, our special packaging system protects the delicate Omega-3 EPA and DHA from oxygen and light a concern with Omega-3 products in bottle. Have you had your Coromega today? Guaranteed DHA & EPA Content. Pharmaceutical...
	Kirkland Signature Fish Oil w/ Omega-3 Fatty Acids - One Per Day Formula - 180 Enteric Coated Softgels by Omega 3 Fatty Acids The enteric coating reduces the fishy odor and aftertaste by protecting the softgel until it reaches the lower intestine. Kirkland Signature fish supply comes from deep ocean waters. Our fish oil is not supplied from farm-raised fish. State-of-the-art molecular distillation process is used to remove mercury, PCBs and dioxins which guarantees purity and potency. Fish Oil naturally contains the Omega3 Fatty Acids, EPA and DHA. Omega-3 Fatty Acids help maintain heart and vascular health.* *These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure or prevent any disease.
	Vet Solutions Omega-3 Fatty Acid Capsules Large & Giant Breeds 60 Caps by Vet Solutions Vet Solutions Aller G-3 Supplement contains omega-3 fatty acids derived from fish oil. These fatty acids help decrease allergy related itchness in the skin by interfiering with production of the inflammatory substances that cause the itching. Aller G-3 Supplement is the best supplement to maintain the skin health of your pet.Directions for Use: Administer orally 1 capsule daily for animals 27.3 - 36.4 kg (60 - 80 lbs.) or 2 capsules for animals over 36.4 kg (80 lbs.) body weight. Capsules may be punctured and liquid content squeezed onto food if desired.
	The Ultimate Omega-3 Diet: Maximize the Power of Omega-3s to Supercharge Your Health, Battle Inflammation, and Keep Your Mind S by Evelyn Tribole (Author) Live longer, better, and healthier with omega-3s! The Ultimate Omega-3 Diet is the first book to offer simple, practical steps for striking the proper balance between miraculous omega-3 fats and the less-healthy omega-6 fats to get the most out of your diet. Armed with the practical information in The Ultimate Omega-3 Diet, you'll be able to: Discover delicious omega-3-rich foods that are right in your supermarket Cook mouthwatering meals using the 40 included recipes and meal plans Navigate the often-confusing supplements aisle Read food labels to identify hidden omega-6 fats found in many foods Pack in omega-3s even when eating out Learn the omega-3 and omega-6 content of more than 900 foods
	Source Naturals Essential Fatty Acids (Complete), 120 softgels by Source Naturals Dietary supplement. Source Naturals Complete Essential Fatty Acids is an excellent blend of omega-3 and omega-6 fatty acids. Docosahexaenoic Acid (DHA) is an omega-3 fatty acid which plays a significant role in cerebral development throughout the life style, especially during the crucial period of fetal development and infancy. Gamma-Linolenic Acid (GLA) is an omega-6 fatty acid used by most cells in the body to produce soothing PGE1 prostaglandins. Essential Fatty Acids, or EFA's, act as precursors to molecules such as prostaglandins, thromboxanes and leukotrienes, which help regulate cellular function. EFA's have been shown to play a role in blood pressure maintenance, immune system balance, sustaining healthy skin, and providing nutritional support during women's cycles (These...
	Natrol - Omega-3, 150 softgels by Natrol Each serving of this dietary supplement provides 2 grams of Omega-3 fish oil. Natrol's™ Omega-3 is derived from a variety of select fish and analytically screened to contain less than 1 mg of cholesterol per softgel.
	AllerG-3 Fatty Acids For Large Breeds, 250 Capsules by VET Solutions VET Solutions AllerG-3 Fatty Acid supplements contain omega-3 fatty acids derived from fish oil. These fatty acids help decrease allergy related itchiness in the skin by interfering with production of the inflammatory substances that cause the itching. The omega-3 fatty acids in VET Solutions AllerG-3 Fatty Acids supplements, EPA (eicosapentaenoic acid) and DHA (docosahexaenoic acid), are found only in cold water fish and are not commonly used to make dog food. Other omega fatty acids such as omega-6 and omega-9 fatty acids are plentiful in dog food and do not, therefore, need to be supplemented. In fact, the presence of too many omega-6 fatty acids may actually promote inflammation. VET Solutions AllerG-3 Fatty Acid supplements contain high quality fish oil which meets or exceeds label...
	Nordic Naturals - Omega-3, 180 softgels by Nordic Naturals These omega-3 fatty acids are essential for growth and development throughout the human life cycle.
	Essential Fatty Acid Omega66 (Primary Contributor)