This evening I found an interesting article on FoodNavigator.com -
Organic industry pushes FSA to recognise omega-3 rich milk. In the story they discuss research that found that samples of milk from organic cows contained at least 64 per cent more omega-3 than conventional milk. It is stated that "consuming just half a pint a day of organic milk could provide approximately 10 per cent of the recommended daily intake (RDI) of essential n-3 fatty acid, alpha-linolenic acid."
So, one would have to drink 2 1/2 quarts of organic milk a day to get 100% of your omega 3's. Health Canada recommends a daily intake of omega-3 fatty acids that represents 0.5% of total energy intake. (The United States does not have a recommended intake of omega-3 fatty acids at the present time.) For an adult on a 2000 kcal diet, this is about 1 g. of omega-3 fatty acids. Wouldn't it be easier to eat a product that has 4tsp/13g of shelled hemp seed or 1 tsp/5.6 g of hemp oil to get your 1 g of omega-3 fatty acids?