Can anyone recommend a working dog food please?

[DizzyDummy]

I have a male GSD who has trouble keeping weight on, the vet recommended I put him on a working dog food, does anyone have any recommendations please? Thank you.

I have my cocker on Arden Grange Premium - he was also very difficult to keep weight on and we tried so many foods before he settled on this one. He's still on the slim side, but at least he doesn't look like a toast rack any more.

Our GSD has Arden Grange Large Breed, adult. Loves it.

CSJ is a good working dog food, you can buy it online or from one of their stockests.

Skinners duck and rice or salmon and rice is good and comparatively cheap. I have a cocker and a lab. Burns is a good food but mine stayed very lean on it.