I've copied & pasted an old post of mine. This soup will put weight on your fuzz. If you can't make the soup yourself you can give stage 2 chicken baby food as supplemental meals. You can add heavy whipping cream to the baby food or to the soup for added fat. Congrats on your new baby!
It's best to use a whole chicken with organ meats & bones if you have something to grind the bones. In that case, cook the chicken in a slow cooker so the bones become very soft and won't splinter. I had to quit doing that because my hand grinder aggravates my carpal tunnel syndrome and I haven't yet been able to afford an electric grinder. Maybe Santa Paws will be good to me this year. So, this what I do for now.
4-5 lbs of chicken, pressure cooked (just because it's faster and retains more nutrients), deboned
2 cups kibble, soaked in chicken broth
2-3 hard boiled eggs with shells
2 tablespoons Wysong Feline Biotic (vitamin/mineral supplement)
Puree` chicken, kibble, eggs/shells with chicken broth in blender. Sprinkle on the Biotic. Mix well and freeze. Makes app. 3 quarts. Also, adding bonemeal to this would be a good idea even though the eggshells serve most of the same purposes. I just keep forgetting to buy some so I'm not sure how much I would need to add. Make sure it's food grade bonemeal.
Depending on how many ferrets you have you can either freeze it in ice trays (1 cube per ferret is a portion) or freeze it in Gladware type containers and keep enough in the fridge to last a few days. I go through a quart every 2 days so I always have one ready to use and one thawing. It'll keep in the fridge for about a week.
When you're ready to feed it, heat it with a little broth, water, or cream...stir and serve. The first few times, your ferrets may be resistant because they don't recognize it as food. Force them to taste it. I've never had to force any ferret more than 3 times and most only once.
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I've learned that I don't suffer from insanity, I enjoy it.