Hi Travis,
It can be figured out with simple math, a little bit of knowledge about rat breeding, and a bit of common sense.
If you have 50 snakes, and you feed them a meal each week, you would have to produce a minimum of 200 rats per month, roughly. The average female rat can have between 6 and 16 babies (depending on age and overall size) but usually have 10 on average. They can be bred about every 6 to 8 weeks. If you want to produce a minimum of 200 rats per month, plus additional numbers to sell to elliminate overhead (food & shavings) you will need to shoot for a much larger number. Even just to ensure 200 rats you'd want to shoot for 300 based on the figures above. When you add to that the additional numbers to resale to cover overhead it can be 500 or 600 or whatever number you decide on based on your overhead costs. For now, let's set a precedent of achieving 200 minimum and you can simply double the figures for larger numbers later.
Based on worst case scenario breeding, once every 2 months, and producing an average of 10 babies per female, minus a 20% average death rate prior to weanling = 8 offspring per female every 2 months, minus 50% for mishap and bad luck (sometimes moms go nuts and eat their young or die during labor, etc),.... 100 females should EASILY produce over 200 offspring per month. Needless to say the number could be twice as much, but one thing I learned a long time ago in business is that it's wise to always underestimate production and profit and to overestimate cost and effort. You can't go wrong this way. So if you run 200 females you will certainly produce over 400 offspring per month, plenty of food for the snakes and lots to sell to elliminate overhead and make you some money too.
When you set up your rats, place the breeders in tanks (aquariums work okay if you don't mind scooping shavings) 50 females to 5 or 6 males. If you run 200 females you will only need four breeding tanks. Make sure you raise the males together so they will accept one another and will not fight. Mature males introduced to one another will often fight to the death and it can get ugly. For 200 females you will need approximately 25 maternity boxes that are a minimum of 12 by 16 inches that will accomodate 4 females each making up a total of half the breeding population. Usually it is approximately half the girls are pregnant as the other half are getting pregnant.
In addition to this you will need a tank for weanlings and "stage" tanks for the rats as they grow to larger sizes. As you have juvenile ball pythons now, I assume that you would only need these stage tanks for the offspring grown for resale.
One last note,.. females do die,.. so you will always need to set aside X number of females to be grown to replace dead or retired breeder females.
If I forgot anything (likely) or if you have any other questions, just post them and I will get right to them.
>>Hey Brian,
>> As i stated, i'm looking to put together my rodent facilities. as of right now, i have just under 50 snakes, mostly yearling and younger ball pythons. Only 2 are full grown adults as of now, but over a dozen are yearlings and will be there soon. Im just trying to decide how many breeders i'll need? what would you suggest? within 2 years i'm guessin i'll have about 40-50 breeder sized ball pythons. I would like to raise up another 20-30 females to sell as breeders each year, but yeah.
>>and to make it relevant: I also have a female burmese in the 5 foot range. I got her from Rob Carmichael through his brother Chris who I am so fortunate to live near. She had not been handled a lot when i got her a few months ago, but has settled down and hisses a lot less now (we named her Hissy). She has not attempted to bite me yet but I try not to give her the chance. Thanks again for all the experience shared here. I've been sitting here for about 2 hours now reading through some of the posts (a lot of yours) and I share the appreciation it seems a lot of us have for the more experience keepers. Nothing takes the place of experience, but being able to not experience some things helps a lot!
>>Travis.
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"I must have some terrible, deadly disease. It seems that everyone that has screwed me in the past always dies mysteriously a few years later." *Lou Cypher*