Re: taka otazocka :: Something smarter than us is going to emerge


node:	Re: taka otazocka
template:	4
parent:	taka otazocka
owner:	jancula
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created:	17.06.2013 - 12:43:38

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Nepriberá (pokiaľ niesú naložené v litri oleji alebo smažené).
Robili inak aj výskum, ľudia čo jedia iba ryby (zeleninu,ovocie) žijú najdlhšie :)

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a nie su v tom tazke kovy?

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Su, preto sa odporucaju skor ryby zo zaciatku potravinoveho retzca, kde nielen tazkych kovov este nie je vela akumulovanych. V tom pripade benefity vyrazne prevysuju rizika.
Velkym problemom je aj neudrzatelnost rybolovu.

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Nie je to ale tak, ze tie nenasytene mastne kyseliny z ryb sa tiez v ramci potravinoveho retazca kumuluju, spolu s tazkymi kovmi a inymi toxinmi?

EDIT: Inak co ma nedavno prekvapilo, ked som narazil na informaciu, ze bohatym zdrojom omega-3 je aj baranina za predpokladu, ze boli zvirata chovane na zelenej pase. Ospravedlnujem sa za OT v ramci fora, ale ta imfo ma fakt zaujala :)

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nielen baranina ale v podstate vsetky prezuvavce maju viac n3 ak su chovane na trave a sene

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cize namiesto toho, aby sme prezuvavce krmili travou a senou a mali tak v nich zdroj omega-3, tak dovezieme z amazonie soju, krmime ich tym a potom este pre seba musime dovazat tuniaky a lososy...chapem to spravne?

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staci krmit aj domacim zrnom a efekt je podobny

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Nie je to ale tak, ze tie nenasytene mastne kyseliny z ryb sa tiez v ramci potravinoveho retazca kumuluju, spolu s tazkymi kovmi a inymi toxinmi?
este trochu inak (odtialto, kapitola 19):

A final aspect related to aquaculture is the widespread practice of feeding wild-caught seafood
to farmed piscivorous seafood species, e.g. salmon. This practice decreases the availability of
seafood for direct human consumption on a per capita basis [95, 106]. This leads to a paradox:
aquaculture is a possible solution, but also a contributing factor to the collapse of fisheries stocks
worldwide [106]. It must be said that up to now, aquaculture is still the largest consumer of
fish-derived oils, and so is clearly not capable of operating in a sustainable manner [107]. So,
to meet consumer demand for piscivorous fish and at the same time reduce the pressure on wild
fish stocks, land-based plants—such as grains, soybeans, legumes, and blended vegetable oils—
are increasingly being used as staple fish food. The disadvantage is that using this feed will
lower the LC n-3 PUFA concentration compared to the wild-caught species, affecting one of
the important nutritional advantages of seafood consumption [95]. However, actually different
studies are running that investigate whether a combination of a diet high in vegetable oil with a
diet high in fish oil only during the last weeks of the production cycle can lead to a restoration
of EPA and DHA concentration to equal levels when compared to fish oil-fed counterparts [102,
107]. More research is needed and probably it will take time before such customs are used in
practice. An alternative to this kind of combined diets can be the use of single cell oils and
genetically modified plants (and animals) as sustainable sources of LC n-3 PUFAs.

a kapitola 20:
A high degree of purity has been seen in FODS prepared from the oil of fish caught in clean
waters (open-ocean) compared to more polluted fish from coastal areas or closed seas.
2. Oil derived from smaller species, such as anchovy, typically contains fewer contaminants than
oil from larger fish (cod or salmon). This is most probably due to the shorter life of smaller
fish, which leads to a lower accumulation of contaminants.

Inak co ma nedavno prekvapilo, ked som narazil na informaciu, ze bohatym zdrojom omega-3 je aj baranina za predpokladu, ze boli zvirata chovane na zelenej pase.
ano - kapitola 6

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mas to i nejak prakticky prozkoumane co se da v nasich koncinach kupovat?

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Velmi nie, milujem ancovicky, tych jedavam vela, a obcas si dam nieco vacsie.
e: ale kedze sme vo vegetarianskom fore, skor by to chcelo najst zdroj dobrych rias, pretoze z nich vacsinu tych fajn veci ryby cerpaju