Found it ... And thanks to Michael Cobar for this info (and John Weigel).
You are giving me credit for something that John Weigel really deserves. He was the one who posted the following on this list.
Here is John's original email and my variation at the end.
We experimented with snake sausages as a staple for snakes with
unsophisticated taste requirements - ie our venom production snake colony in
the mid 80's. Though we developed a workable, palatable outcome based on
ground kangaroo meat, there was one substantial problem. The recycled
sausage contents would be used to spray paint/decorate inside of cages. The
old expression: 'through the eye of a needle' was well deserved. This
despite inclusion of wheat bran - which I would have thought would
significantly bind the 'load'.
Then a breakthrough in thinking. In about 1990, while revisiting the
concept, we tried using same recipe - but boiled the sausages prior to
bagging and freezing. The result was a much easier to clean cage after the
end of the line for the snags. The sausages were a fantastic success up
until a few years ago when their usage fell aside for no good reason. We are
now back into the snags, and I'm sure the guys here will learn to love 'em.
The important thing is that they are boiled. Not 'par-boiled', but
full on boiled 'til cooked. A production line process can speed
production - but if you don't have a sausage making machine or pal with
same, you may have trouble getting past first base.
In say, 10kg of snags, we mix:
8kg roo mince
1.5kg oat flakes (or bran)
appropriate mix of vitamins and minerals (including D3 in correct proportion
to calcium, appropriate quantity of calcium.
10 fresh eggs
Please do not to write me to argue about heat damage to vitamins or
non-natural contents. This mix is miles ahead of what most of us raise our
dogs and cats on. I don't know how many list-readers have dissected adult
lab rats or lab mice - but those who have can attest to the ridiculously
high fat-content of these usual dietary mainstays. The sausages are
'training table' fodder. Still, we do compliment the diet of principally
sausage eating snakes with occasional rodents.
Its surprising what species will learn to eat snags. Generalist
feeders such as non-adder large elapids, olive pythons, goannas and the
likes are easy - but many sophisticates - such as diamonds, adders, etc,
will learn to eat them. The initial feedings requires the scenting of the
snags with traditional food items. Easy to do, just mix equal number of
snags, and say, thawed lab mice in a plastic box with lid. Shake, rattle and
roll, and woi-lah, snags that smell like thawed lab mice (which of course
smell nothing like real mice!).
Hope all above is interesting. But don't hassle me for source of
sausage making gear/persons, as your adventure of discovery is the price for
such an old family recipe.
John Weigel
My variation for smaller collections and amounts
per kilo sausages:
800 g minced meat ( I use the 1 kg packaged cat or dog mince)
200 g oat or wheat bran
1 egg
calcium ( about 1 teaspoon calcium carbonate)
vitamins I use Womabaroo reptile mix ( about 1 tablespoon full)
Mix all together and stuff into sausage gut ( you can get it from the
butcher, a sausage maker really helps here. I bought one from Crazy Clint's
for about $ 60 some time ago, but you could also use a funnel if necessary)
boil sausages until done and freeze.
When I want to feed, I take the amount of sausages required, pour boiling
water over them and when the water is cooled to luke warm, I feed the
sausages by putting them on the blunt end of a skewer and let the snake
"catch" it.
All the best and happy herping
Michael H. Cobar