Help with a project: Farm raised seafood vs wild caught - your thoughts.

[Proud2baLaker]

Re: Help with a project: Farm raised seafood vs wild caught - your thoughts.

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Do trout (any) eat a significant part of their diet as fat already? If not, why are you altering their diet? Is it to make them bigger, faster, etc for sale?

Trout and Salmon have a high energy demand (higher fat content needed in diet than say hybrid striped bass or something). Most diets that major feed makers make avaialable were originally formulated for trout and salmon (since they are the main carnivore raised in the US) so they have upwards of 40-50% protein and ~15% fat. My diets are something like 47% protein and 12-15% fat. Reduce it much below that and you lose growth. We are not altering the amount of fat but rather the composition of it to reduce the use of the marine based fish oil. We can still provide the proper amount of energy for them with the alternative but we lose some of the good omega-3 that they may normally accumulate in the tissue. By using an alternative high in saturates and mono-unsaturates, it seems that when we switch them back to fish oil for a short time the will preferentially retain the omega-3 that are now present and use the stored up saturates for energy. Having our cake and eating it too if you will.

If you feed a hybrid striped bass or largemouth a diet with 40-50% protein and 15% fat most of that protein and fat will be stored as excess fat in the gut or simply lost as weight...so you are paying for expensive protein that is just going to waste. Now we have some additional diets avialable that have less protien and energy for species like that but they still have lots of fish meal and fish oil in them and we are looking at other sources to reduce our fish meal and fish oil use as well. We will likely never be able to completely go fish meal and fish oil free but if we can reduce our use as much as possible we will increase our sustainability and perhaps leave more of the anchovy, mackeral, sardines, menhaden and what not that are used for fish meal and fish oil in the ocean...and maybe help sustain some wild fisheries as well.

 

[Proud2baLaker]

Re: Help with a project: Farm raised seafood vs wild caught - your thoughts.

Recently I had to change my diet...limiting protein to 3 oz or size of a deck of cards twice a day. So I got very interested in meat and health and now am in the grocery stores daily.

Fish has become a big deal. Notably Salmon and Talipia. I think that the health ramifications (alphas), lower relative mecury levels (compared to most other fish), taste and cooking options (I microwave) has made these two a hot commodity. Prices are about $10.00 a pound on sale ($15 when not) and half that for talapia. I myself started to eat it daily plus...until I was reminded about mercury. Now my goal is to try to get a handle on how much you can safely eat of these 'low mecury' sea fish.

I would say there is a fair amount of confusion about what's better or worse in fish. OK most can guess that fresh is better than frozen. And I would guess most expect wild to taste better than farmed. Regarding mercury and these options...not too sure. I would guess that there is a large industry around farmed that doesn't exist around wild which always makes you wonder about the accuracy of info. I have heard that one should eat no more than 2 servings a week (or 4 servings at my size) of salmon/talipia or much less for other fish due to mercury...not sure if this is true or overblown.

My guess is for the knowledgeable fish shopper it comes down to how much can I eat safely as there has been so much information about the dangers of mercury? Is chicken, beef subject to their own problems due to antibiotics, genetically modified, inproperly fed issues? If so, are they in the same league or is salmon both much better (due to health) and much worse (due to mercury) than other types of meat?

We have a study wrapping up right now where we show a few things 1) the amount of mercury and other toxins in farmed fish is quite low and in most cases is not higher than what you would see in wild fish 2) we can keep it even lower by increasing our use of alternative feedstuffs (less fish meal and fish oil). What we are seeing is that it takes a lot of effort to get the levels of these toxins above the action levels that the FDA and EPA and what not consider probelmatic.

The American Heart Association and other groups have all said that the risks of eating fish are far outweighed by the benefits of the omega-3 fatty acids and lean protein you are getting. If you are prone to eating fattier fish like salmon, be mindful how you cook it and follow the guidelines of 2 meals a week. Same really goes for most fish, wild or farmed. Unless of course its coming from some river where they say dont eat the fish at all.

 

[Proud2baLaker]

Re: Help with a project: Farm raised seafood vs wild caught - your thoughts.

Well, Peru IS in South America. So they could very well have "American Pride".

True. Though when the logo is basically an American flag...it made me chuckle. The weird thing is that was the sea scallops. They had bay scallops right next to them that were from US waters.

 

[bigblue_dl]

Re: Help with a project: Farm raised seafood vs wild caught - your thoughts.

As for answering your initial questions...

I don't eat fish very often, and when I do, it is almost always in a restaurant. The few times it is at home, I eat wild fish (almost always walleye) that has been caught be friends or family. The question of farmed vs. wild fish..I have no problem with farmed fish, and I highly doubt I'd be able to tell the difference. At this point I don't really make a conscious decision to eat one or the other, I just eat whatever is available. As long as fish farming is done responsibly and is regulated, like you have said it is, I see no reason not to eat farmed fish just like I eat, and enjoy, farmed beef and pork.