There are a few ways to tell if your bulldog is getting the right nutrients:

1. Body condition: A healthy bulldog should have a visible waist when viewed from above and the ribs should be palpable but not visible. If your bulldog is too thin, they may not be getting enough nutrients. If they are overweight, they may be getting too many nutrients.
2. Coat condition: A healthy bulldog should have a smooth, shiny coat. If their coat is dull or dry, it could be a sign that they are not getting enough nutrients.
3. Energy level: A healthy bulldog should have plenty of energy and be eager to play. If your bulldog is lethargic or has little energy, it could be a sign that they are not getting the right nutrients.
4. Stool quality: A healthy bulldog should have firm, well-formed stools. If their stools are loose or diarrhea, it could be a sign that they are not absorbing the nutrients they are consuming properly.

If you are concerned about your bulldog’s nutrition, it is always a good idea to speak with a veterinarian. They can help you determine if your bulldog is getting the right nutrients and make recommendations for any changes that may be necessary.