D: What is the difference between Salmon oil and Linseed oil?
There is a difference between omega-3 from fish oil and from linseed oil (oil from plant origin). Fish oil and Linseed oil each provide omega-3 fatty acids, but only fish oil contains the omega-3s EPA and DHA which has been shown to be helpful for conditions such as dermatitis, skin & coat quality, osteoarthritis, inflammatory bowel disease…
Plant origin oils in general contain ALA omega-3 fatty acid (alpha-linolenic acid) and no EPA and DHA omega-3 fatty acid. Fish origin oils are a direct source of EPA and DHA.
D: Can the dog utilize omega-3 fatty acids from plant oil like Linseed oil?
Linseed oil, contains 55-70% of omega-3 fatty acid ALA (alpha-linolenic acid) which must be converted into DHA and EPA to be beneficial to conditions such as dermatitis, skin & coat quality, osteoarthritis, inflammatory bowel disease.
Dogs are able to convert approximately 10 – 15% of ALA to EPA and DHA. If we take in account content of Omega-3 in Fish oil (2,1 g DHA/EPA/100g of Salmon oil) and omega-3 in Linseed oil (23,0g ALA/100g of linseed oil) you can easily count that the same amount of linseed oil is converted to the same or even higher amount of DHA and EPA (2,3 -3,45 g DHA/EPA/100g linseed oil) like from the same volume of Salmon oil.
There are some studies which describes the reality that organism is able to convert the amount of omega-3 ALA to omega-3 EPA/DHA which is needed for normal healthy metabolism. The rest of ALA is used as a source of energy.
Inability of plant origin oils utilization by dogs is quite common misinterpretation and fake-news about omega-3 from Linseed oil. In the case your dog or cats refuse to eat fish oil, you don’t have any another simple and rich alternative like Linseed of hemp oil.