What is the difference between farmed salmon and wild salmon?
It is better to purchase wild salmon. This is because farmed salmon is not so good for the environment. It is often raised in open water nets. These nets are crowded with salmon, so diseases are more easily passed from fish to fish and a lot of fish waste and uneaten feed can pass through into the ocean. To prevent diseases and epidemics, chemical and antibiotic treatments are used
Comparison Summary on Wild Vs. Farmed Salmon
PCBs – Polychlorinated biphenyls are a class of organic compounds that are highly toxic
Choose Wild Over Farmed !!!
Omega 3’s are GOOD. Omega 6’s are BAD, sort of. We need Omega-6’s, but we need more Omega-3’s.
Does the Omega-3 in fish lower blood cholesterol?
Omega-3 fat, from any source, does not directly lower blood cholesterol. Omega-3 fatty acids, however, do compete with Omega-6 fatty acids for the same enzymes. Increasing Omega-3 intake will cause increased conversion to healthy prostaglandins(前列腺素) and will, by competition, decrease conversion of Omega-6 fatty acids to unhealthy prostaglandins(前列腺素). In addition, salmon or say fish, intake has tremendous healthy heart advantages. The increased intake of fish (not battered or fried fish) will in turn decrease the intake of meats and cheese and other cholesterol laden foods, thus allowing an affect that way.
Prostaglandins are a group of lipid compounds(類脂化合物) that are derived enzymatically from fatty acids and have important functions in the animal body. Every prostaglandin contains 20 carbon atoms, including a 5-carbon ring.
The Use of Prostaglandins(前列腺素)
Prostaglandins are defined as a class of unsaturated fatty acids that are involved in the contraction of smooth muscle, the control of inflammation and body temperature, and other physiological functions(生理功能).
How to tell wild salmon from farmed
Salmon fillet at the right of above photo was previously purchased in JEBN (樓上燕窩), showing thick fat lines. The meat is totally soft.
Salmon fillet at the left is recently purchased in Fusion (Park & Shops chain), showing little fat in loin section. This is “wild salmon”. The meat is firm and lean.