Cod liver oil

Actually, I wouldn't feed cod liver oil as the vitamin A can build up in the liver. What is it you are aiming for - reducing or avoiding stiffness?

And the first food you linked to is about 46% grain which isn't particularly nutritious. The second one only has 4% of the named meat derivative, the full meat derivative content isn't clear (which is not a good sign).

If you want to change, have a look at www.allaboutdogfood.co.uk It is an independent dog food comparison website which scores all types of foods (dry, raw, wet) out of 100. You can set filters for your dog's breed, weight, age etc. and for your daily budget; then you can add in any specific needs you have such as aiming for weight loss or avoiding specific ingredients. The website will automatically show the foods listed in order of what the assessors believe is best quality, and it also will show daily feeding cost (calculated from your dog's age and weight) so you can see what gives you best value for money. It has its limitations but it's a decent place to start.

That said, if you are happy with your current food and only want your dog to lose weight, just cut it back by about 10 - 15%.

 

Like I said, if you are happy with it, don't change - at the end of the day, the best food for your dog is the one that suits his tummy and your budget. And broccoli is fine, as is the other food as a variery or topper - so just cut back a little.

For joints, I use a Bioflo magnetic collar on my dog and a product called Jointsure which contains green lipped mussel, chondroitin and glucosamine.

 

Apologies, the spelling is Bioflow.

Magnetic Dog & Cat Collars | Magnetic Wellness & Joint Care For Pets