I either share what our dr has us ( Carlsons Finest Fish Oil liquid) or the Icelandic Pure ( which you can order from amazon). My crew gets 3200 mg omega 3's... 1600 mg EPA and 1000mg DHA daily.
This sounds right based on what I have read. There are many, many articles on the benefits of EPA/DHA for our dogs. However, I have only seen two articles from vets and/or studies performed at vet universities, which actually recommend a dosage. Fish oil suppliers have recommended doses, of course, but you don't know the source of these recommendations.
One study gave 1500mg of EPA/DHA to test the benefits of Omega 3 in atopic dogs. I just read another article by a vet who recommended 1000mg of fish oil per day per 10 lbs of body weight. This translates to about 2100mg of EPA/DHA daily for a 70 lb dog. I'm not sure, but I would think feeding a Golden 1 or 2 fish oil caps per day would not give a therapeutic benefit.
I'm not sure if amount of Omega 3's (EPA/DHA) stated in the guaranteed analysis of the kibble is reliable. That is, has it degraded, etc? Also, I assume any ALA Omega 3 from canola oil or flaxseed is useless. From what I have read, there is no risk of over supplementing so I do not assume my dog gets any benefit from EPA/DHA in the kibble and supplement the full dosage with fish oil gel caps.