Well, you are adding calcium BUT:

1. You are missing a LOAD of other minerals and nutrients so there MUST
be cooked organ meats, cartilage, and skin in there. Liver is among the
especially useful organ meats.

2. You would be safer grinding cooked bones and then straining them
because so many bone meal sources are often NOT food grade and so many
are too high in heavy metals like lead. Alternatively, use Tums.

It would not hurt to put small amounts of some veggies in there but
don't go too heavy on things with much Vitamin D, and NEVER use things
like avocado, chocolate, grapes, currents, or raisins. Look below for a
link you NEED to use to know which human foods can be toxic for pets.

When we had to make homemade food for a sick one who could not swallow
properly TWO veterinary nutritionists told us to always add these
things:

COOKED egg yolks (and the whites were also okay once cooked), and
Nutrical.

Read what things are dangerous in:
http://www.aspca.org/pet-care/poison-control/

You already know that in your location it is important to cook meats
sufficiently.

Also, a human AND ferret note: be wary of bushmeat. The eating of
monkeys is how a simian virus got into chimps and then became the
precursor of HIV. Then eating chimp meat brought that into humans and
in someone it modified to become true HIV. There were some early cases
of HIV found in retained lab samples from people who died of mysterious
diseases and had gone into the interior before there were roads in the
mid 1950s so it existed before then. Later roads allowed it to spread
outward which is why it was seen more in the 1970s onward, and it seems
to have developed some additional mutations. There are actually a range
of diseases like that, meaning that the more roads that connect jungles
to cities, the more there is the outward spread of diseases that were
not known to science before. Also, bushmeat in some locations is higher
in parasites and sometimes in novel parasites. If Addis Ababa is
anything like Paramaribo was when I worked in Suriname (most of my time
in the Voltzberg and Raleigh Falls areas) years ago then bushmeat will
be available in some markets, and that is common in many tropical
nations. Heck, from talks with others in the U.S. there are (were?)
Farmer's Markets which sometimes have (had?) hunters' kiosks, including
in sometimes areas with ongoing prion disease in elk...

Sukie (not a vet)

Recommended ferret health links:
http://pets.groups.yahoo.com/group/ferrethealth/
http://ferrethealth.org/archive/
http://www.afip.org/ferrets/index.html
http://www.miamiferret.org/
http://www.ferrethealth.msu.edu/
http://www.ferretcongress.org/
http://www.trifl.org/index.shtml
http://homepage.mac.com/sukie/sukiesferretlinks.html
all ferret topics:
http://listserv.ferretmailinglist.org/archives/ferret-search.html

"All hail the procrastinators for they shall rule the world tomorrow."
(2010, Steve Crandall)

[Posted in FML 7186]