Farmed fish or wild fish: which one to choose to fully enjoy the precious nutritional virtues of this food? The answer to this question requires a prior examination of aquaculture techniques, a sector which is now essential in the "global food economy. These" fish factories ", in fact, churn out adult specimens at an unsustainable pace for their natural habitats, thus managing to satisfy the huge international requests.
The diet - mainly based on vegetable flours such as soy - reduces the concentration of mineral salts and precious omega-three (especially in the meat of salmon and other carnivores), while increasing the omega-six fraction. thus to downsize one of the best nutritional qualities of this food.
The animal rights activists, for their part, underline that a fish forced to live in very confined spaces certainly cannot be happy with his condition, which causes him stress, frustration and suffering. This is a phenomenon that could arouse some laughter among less sensitive readers, but which in any case has a negative impact on the quality of the meat.
Should farmed fish therefore be avoided? Of course not. The oxygenation and water purification systems, together with the sanitary controls, are able to significantly reduce the severity of the problems exposed. On the other hand, even the breeders themselves have every interest in protecting the health of animals; an "insufficient oxygenation of the water", for example, negatively affects the growth rate and appetite of the specimens. Vaccines, for their part, have contributed significantly to preventing serious infectious diseases and reducing the use of antibiotics and chemotherapy. Even the controls by the bodies in charge represent a "further guarantee for the consumer. Obviously, this does not prevent unscrupulous breeders from resorting to unapproved antibiotics or growth promoters; this phenomenon, moreover, is also widespread among breeders. of cattle.
Ultimately, the difference between a wild fish and a farmed fish is the same that separates a free-range chicken raised on the ground from one raised in a battery. Obviously, wild fish from sea or fresh water is to be preferred, even if this choice is partly penalized by its greater susceptibility to the accumulation of heavy metals, especially if it is a large predator caught in contaminated waters.
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