[LilCritter]

If I give my rats cod liver oil as part of their supplement, do I need to still give them liver? Is there a significant difference between the 2?
I do a homemade mix of fruits, veggies, seeds, cereals, and oxbow RR. I also supplement with 1 drop of 5000 IU vitamin D drops every week.

 

[Isamurat]

Liver gives high amounts of copper, cod liver oil tends to add in Vit D but not copper, it is also high in vit A which can be toxic at relatively low doses. I wouldnt give it more than once a week.

There are other options for copper, one of my faves is to make liver buiscuits (blend liver up and add an egg, enough flour to make a doughy mess and anything else you think might be nice, then bake for about 20 mins at 180 deg c, chop into small peices and freeze them in 1 week batches). Dark green leafy veg is also pretty good for copper as is dried mushrooms