Are stocked trout genetically modified?

[Tiger1358]

Someone asked me a question the other day, thinking I would know the answer since I fish and hunt all the time, but I didn't know the answer to it. I assume a lotta people in this forum have worked at hatcheries and so forth or know how they raise those fish. Are stocked trout genetically modified or are they GMO fed? 

[TONTO]

 Other than the triploids?

[Tiger1358]

Other than the triploids?

Yea, just regular trout that they stock in lakes, and also the ones in alpine lakes that they stock every 3-4 years or so

[lokidog]

Not likely, even the triploids are not genetically modified in the sense of having non-rainbow trout dna added to theirs.  Their modification is a controlled mutation that prevents the chomosomes from forming a single set when producing a gamete (egg or sperm cell) thus leaving paired chromosomes like found in non-sex cells. When one of these combines with a normal sex cell, it forms an organism with three sets of chromosomes (tri) instead of the normal two sets.

[Tiger1358]

How about the genetically modified corn and soy that they use to feed them? Doesn't it affect them?

[Skyvalhunter]

You can read about the different species of fish here. Some of this has changed a little(i.e. Goldens from CO or CA I believe) There is still some rogue planting done like with Browns. We Trailblazers purchase some of the fish we stock where it is then taken to the different hatcheries to be reared.
https://watrailblazers.org/science/crawford/#troutculture

[Roundhead]

Whenever man intervenes with the natural reproduction process, the result is genetic modification.

[Gringo31]

Tiger,
What exactly is your concern?

[nwwanderer]

As stated the fish are not GMO as it is usually defined.  Are they fed GMO feed?  If the diet has soy or corn it is likely to be GMO.  Why is that a problem?  Trillions of meals have been fed to all classes of livestock and humans with no credible problems.

[Skyvalhunter]

If you are one of those that are hell bent worried about GMO, call the Tokul trout hatchery and ask them what kind of feed they use then look it up on the internet and you can make your judgment from there. My self I an not concerned and I stock them.

[Stein]

Whenever man intervenes with the natural reproduction process, the result is genetic modification.

If you hold that line, you won't eat about 99% of the things that come from a farm today.  Man created things like apples, rice, tomatoes and the vast majority of fruits and vegetables.

[huntnphool]

Whenever man intervenes with the natural reproduction process, the result is genetic modification.

If you hold that line, you won't eat about 99% of the things that come from a farm today.  Man created things like apples, rice, tomatoes and the vast majority of fruits and vegetables.

 Not to mention wheat.

[fish vacuum]

You can read about the different species of fish here. Some of this has changed a little(i.e. Goldens from CO or CA I believe) There is still some rogue planting done like with Browns. We Trailblazers purchase some of the fish we stock where it is then taken to the different hatcheries to be reared.
https://watrailblazers.org/science/crawford/#troutculture

Interesting links to browse through on the trail blazers site. I'm planning to visit a couple of high lakes this summer.

[HUNTIN4SIX]

No stocked trout are not genetically modified.......I am in the profession.  And NO there is no added DNA to Triploid Rainbow.  They are most commonly heat shocked 20 min post fertilization for 20 minutes.  Some can be pressure shocked also (brook trout)...It all depends on a persons definition of genetically modified.  Now Tiger trout are a different story Brown female crossed with brook trout male.  A brook trout is actually a Char.  Side note: Triploids don't necessarily grow bigger than diploids (that will ruffle feathers).  The fish food question is true, and a good question.  Much of the fish food diets are corn.  Fish byproducts have become depleted and expensive for feed companies.

[Tiger1358]

No stocked trout are not genetically modified.......I am in the profession.  And NO there is no added DNA to Triploid Rainbow.  They are most commonly heat shocked 20 min post fertilization for 20 minutes.  Some can be pressure shocked also (brook trout)...It all depends on a persons definition of genetically modified.  Now Tiger trout are a different story Brown female crossed with brook trout male.  A brook trout is actually a Char.  Side note: Triploids don't necessarily grow bigger than diploids (that will ruffle feathers).  The fish food question is true, and a good question.  Much of the fish food diets are corn.  Fish byproducts have become depleted and expensive for feed companies.

Thanks for your detailed and informative answer!